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_label10_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:33:18,059 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:33:18,063 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:33:18,080 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:33:18,080 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:33:18,081 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:33:18,082 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:33:18,088 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:33:18,090 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:33:18,091 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:33:18,092 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:33:18,092 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:33:18,093 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:33:18,094 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:33:18,095 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:33:18,096 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:33:18,097 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:33:18,099 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:33:18,101 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:33:18,103 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:33:18,104 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:33:18,105 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:33:18,108 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 18:33:18,108 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 18:33:18,109 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 18:33:18,110 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 18:33:18,111 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 18:33:18,111 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 18:33:18,112 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 18:33:18,114 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 18:33:18,114 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 18:33:18,115 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 18:33:18,117 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 18:33:18,133 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:33:18,133 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:33:18,134 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:33:18,134 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:33:18,135 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:33:18,135 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:33:18,135 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:33:18,135 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:33:18,135 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:33:18,136 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:33:18,136 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:33:18,136 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:33:18,136 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:33:18,136 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:33:18,137 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:33:18,137 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:33:18,137 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:33:18,137 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:33:18,137 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:33:18,138 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:33:18,138 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:33:18,138 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:33:18,138 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:33:18,138 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:33:18,139 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:33:18,139 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:33:18,139 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:33:18,139 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:33:18,182 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:33:18,195 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:33:18,200 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:33:18,202 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:33:18,202 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:33:18,203 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label10_false-unreach-call.c [2018-10-23 18:33:18,277 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/588d85b0f/96d76335f20c4667b4cd5a07c6d544e9/FLAG9783ad85d [2018-10-23 18:33:18,969 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:33:18,970 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label10_false-unreach-call.c [2018-10-23 18:33:18,995 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/588d85b0f/96d76335f20c4667b4cd5a07c6d544e9/FLAG9783ad85d [2018-10-23 18:33:19,010 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/588d85b0f/96d76335f20c4667b4cd5a07c6d544e9 [2018-10-23 18:33:19,021 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:33:19,023 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:33:19,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:33:19,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:33:19,030 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:33:19,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:33:19" (1/1) ... [2018-10-23 18:33:19,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20472c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:33:19, skipping insertion in model container [2018-10-23 18:33:19,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:33:19" (1/1) ... [2018-10-23 18:33:19,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:33:19,190 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:33:20,471 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:33:20,476 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:33:20,899 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:33:20,928 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:33:20,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:33:20 WrapperNode [2018-10-23 18:33:20,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:33:20,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:33:20,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:33:20,930 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:33:20,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:33:20" (1/1) ... [2018-10-23 18:33:20,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:33:20" (1/1) ... [2018-10-23 18:33:21,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:33:21,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:33:21,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:33:21,422 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:33:21,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:33:20" (1/1) ... [2018-10-23 18:33:21,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:33:20" (1/1) ... [2018-10-23 18:33:21,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:33:20" (1/1) ... [2018-10-23 18:33:21,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:33:20" (1/1) ... [2018-10-23 18:33:21,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:33:20" (1/1) ... [2018-10-23 18:33:21,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:33:20" (1/1) ... [2018-10-23 18:33:21,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:33:20" (1/1) ... [2018-10-23 18:33:21,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:33:21,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:33:21,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:33:21,735 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:33:21,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:33:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:33:21,802 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:33:21,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:33:21,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:33:30,440 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:33:30,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:33:30 BoogieIcfgContainer [2018-10-23 18:33:30,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:33:30,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:33:30,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:33:30,446 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:33:30,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:33:19" (1/3) ... [2018-10-23 18:33:30,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4428c216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:33:30, skipping insertion in model container [2018-10-23 18:33:30,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:33:20" (2/3) ... [2018-10-23 18:33:30,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4428c216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:33:30, skipping insertion in model container [2018-10-23 18:33:30,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:33:30" (3/3) ... [2018-10-23 18:33:30,450 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label10_false-unreach-call.c [2018-10-23 18:33:30,460 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:33:30,470 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:33:30,489 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:33:30,548 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:33:30,548 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:33:30,549 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:33:30,549 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:33:30,549 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:33:30,549 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:33:30,549 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:33:30,549 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:33:30,550 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:33:30,589 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-10-23 18:33:30,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-23 18:33:30,604 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:33:30,605 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:33:30,609 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:33:30,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:33:30,616 INFO L82 PathProgramCache]: Analyzing trace with hash -686802918, now seen corresponding path program 1 times [2018-10-23 18:33:30,618 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:33:30,619 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:33:30,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:33:30,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:33:30,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:33:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:33:30,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:33:31,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:33:31,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:33:31,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:33:31,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:33:31,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:33:31,027 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 4 states. [2018-10-23 18:33:42,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:33:42,145 INFO L93 Difference]: Finished difference Result 2918 states and 5666 transitions. [2018-10-23 18:33:42,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:33:42,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-10-23 18:33:42,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:33:42,189 INFO L225 Difference]: With dead ends: 2918 [2018-10-23 18:33:42,189 INFO L226 Difference]: Without dead ends: 2153 [2018-10-23 18:33:42,198 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:33:42,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2018-10-23 18:33:42,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2153. [2018-10-23 18:33:42,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2018-10-23 18:33:42,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 3448 transitions. [2018-10-23 18:33:42,399 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 3448 transitions. Word has length 19 [2018-10-23 18:33:42,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:33:42,400 INFO L481 AbstractCegarLoop]: Abstraction has 2153 states and 3448 transitions. [2018-10-23 18:33:42,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:33:42,400 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 3448 transitions. [2018-10-23 18:33:42,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-23 18:33:42,403 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:33:42,404 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:33:42,404 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:33:42,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:33:42,405 INFO L82 PathProgramCache]: Analyzing trace with hash 2127119049, now seen corresponding path program 1 times [2018-10-23 18:33:42,405 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:33:42,405 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:33:42,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:33:42,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:33:42,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:33:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:33:42,721 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:33:42,722 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:33:42,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:33:42,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:33:42,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:33:42,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:33:42,725 INFO L87 Difference]: Start difference. First operand 2153 states and 3448 transitions. Second operand 4 states. [2018-10-23 18:33:51,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:33:51,665 INFO L93 Difference]: Finished difference Result 6377 states and 10263 transitions. [2018-10-23 18:33:51,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:33:51,665 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2018-10-23 18:33:51,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:33:51,689 INFO L225 Difference]: With dead ends: 6377 [2018-10-23 18:33:51,689 INFO L226 Difference]: Without dead ends: 4226 [2018-10-23 18:33:51,695 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:33:51,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2018-10-23 18:33:51,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 4226. [2018-10-23 18:33:51,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4226 states. [2018-10-23 18:33:51,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 5833 transitions. [2018-10-23 18:33:51,776 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 5833 transitions. Word has length 85 [2018-10-23 18:33:51,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:33:51,776 INFO L481 AbstractCegarLoop]: Abstraction has 4226 states and 5833 transitions. [2018-10-23 18:33:51,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:33:51,777 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 5833 transitions. [2018-10-23 18:33:51,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-23 18:33:51,784 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:33:51,784 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:33:51,785 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:33:51,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:33:51,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1440495682, now seen corresponding path program 1 times [2018-10-23 18:33:51,785 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:33:51,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:33:51,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:33:51,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:33:51,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:33:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:33:52,379 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 11 [2018-10-23 18:33:52,658 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-10-23 18:33:52,659 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:33:52,659 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:33:52,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:33:52,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:33:52,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:33:52,661 INFO L87 Difference]: Start difference. First operand 4226 states and 5833 transitions. Second operand 5 states. [2018-10-23 18:34:01,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:34:01,793 INFO L93 Difference]: Finished difference Result 15360 states and 20468 transitions. [2018-10-23 18:34:01,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:34:01,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2018-10-23 18:34:01,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:34:01,845 INFO L225 Difference]: With dead ends: 15360 [2018-10-23 18:34:01,846 INFO L226 Difference]: Without dead ends: 11136 [2018-10-23 18:34:01,854 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:34:01,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11136 states. [2018-10-23 18:34:02,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11136 to 10445. [2018-10-23 18:34:02,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10445 states. [2018-10-23 18:34:02,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10445 states to 10445 states and 12444 transitions. [2018-10-23 18:34:02,165 INFO L78 Accepts]: Start accepts. Automaton has 10445 states and 12444 transitions. Word has length 204 [2018-10-23 18:34:02,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:34:02,166 INFO L481 AbstractCegarLoop]: Abstraction has 10445 states and 12444 transitions. [2018-10-23 18:34:02,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:34:02,169 INFO L276 IsEmpty]: Start isEmpty. Operand 10445 states and 12444 transitions. [2018-10-23 18:34:02,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-10-23 18:34:02,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:34:02,176 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:34:02,177 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:34:02,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:34:02,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1111539209, now seen corresponding path program 1 times [2018-10-23 18:34:02,179 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:34:02,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:34:02,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:02,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:34:02,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:34:02,918 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 264 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-10-23 18:34:02,919 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:34:02,919 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:34:02,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:34:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:34:03,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:34:03,231 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-10-23 18:34:03,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:34:03,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-23 18:34:03,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 18:34:03,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 18:34:03,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:34:03,257 INFO L87 Difference]: Start difference. First operand 10445 states and 12444 transitions. Second operand 6 states. [2018-10-23 18:34:14,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:34:14,949 INFO L93 Difference]: Finished difference Result 31269 states and 37248 transitions. [2018-10-23 18:34:14,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 18:34:14,950 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 387 [2018-10-23 18:34:14,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:34:15,016 INFO L225 Difference]: With dead ends: 31269 [2018-10-23 18:34:15,016 INFO L226 Difference]: Without dead ends: 18750 [2018-10-23 18:34:15,033 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 387 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:34:15,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18750 states. [2018-10-23 18:34:15,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18750 to 13883. [2018-10-23 18:34:15,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13883 states. [2018-10-23 18:34:15,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13883 states to 13883 states and 15539 transitions. [2018-10-23 18:34:15,299 INFO L78 Accepts]: Start accepts. Automaton has 13883 states and 15539 transitions. Word has length 387 [2018-10-23 18:34:15,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:34:15,300 INFO L481 AbstractCegarLoop]: Abstraction has 13883 states and 15539 transitions. [2018-10-23 18:34:15,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 18:34:15,300 INFO L276 IsEmpty]: Start isEmpty. Operand 13883 states and 15539 transitions. [2018-10-23 18:34:15,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-10-23 18:34:15,307 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:34:15,307 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:34:15,308 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:34:15,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:34:15,308 INFO L82 PathProgramCache]: Analyzing trace with hash 80379911, now seen corresponding path program 1 times [2018-10-23 18:34:15,308 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:34:15,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:34:15,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:15,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:34:15,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:34:15,681 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-23 18:34:15,951 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-23 18:34:15,952 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:34:15,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:34:15,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:34:15,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:34:15,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:34:15,953 INFO L87 Difference]: Start difference. First operand 13883 states and 15539 transitions. Second operand 4 states. [2018-10-23 18:34:21,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:34:21,270 INFO L93 Difference]: Finished difference Result 45730 states and 52064 transitions. [2018-10-23 18:34:21,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:34:21,270 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 392 [2018-10-23 18:34:21,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:34:21,323 INFO L225 Difference]: With dead ends: 45730 [2018-10-23 18:34:21,323 INFO L226 Difference]: Without dead ends: 31849 [2018-10-23 18:34:21,343 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:34:21,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31849 states. [2018-10-23 18:34:21,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31849 to 31158. [2018-10-23 18:34:21,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31158 states. [2018-10-23 18:34:21,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31158 states to 31158 states and 34730 transitions. [2018-10-23 18:34:21,824 INFO L78 Accepts]: Start accepts. Automaton has 31158 states and 34730 transitions. Word has length 392 [2018-10-23 18:34:21,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:34:21,825 INFO L481 AbstractCegarLoop]: Abstraction has 31158 states and 34730 transitions. [2018-10-23 18:34:21,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:34:21,825 INFO L276 IsEmpty]: Start isEmpty. Operand 31158 states and 34730 transitions. [2018-10-23 18:34:21,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2018-10-23 18:34:21,843 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:34:21,844 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:34:21,844 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:34:21,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:34:21,845 INFO L82 PathProgramCache]: Analyzing trace with hash 271881314, now seen corresponding path program 1 times [2018-10-23 18:34:21,845 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:34:21,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:34:21,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:21,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:34:21,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:34:22,866 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 326 proven. 5 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2018-10-23 18:34:22,866 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:34:22,866 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:34:22,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:34:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:34:23,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:34:23,425 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2018-10-23 18:34:23,446 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:34:23,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-23 18:34:23,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:34:23,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:34:23,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:34:23,450 INFO L87 Difference]: Start difference. First operand 31158 states and 34730 transitions. Second operand 5 states. [2018-10-23 18:34:28,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:34:28,898 INFO L93 Difference]: Finished difference Result 78207 states and 88314 transitions. [2018-10-23 18:34:28,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:34:28,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 603 [2018-10-23 18:34:28,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:34:28,978 INFO L225 Difference]: With dead ends: 78207 [2018-10-23 18:34:28,979 INFO L226 Difference]: Without dead ends: 47742 [2018-10-23 18:34:29,015 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:34:29,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47742 states. [2018-10-23 18:34:29,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47742 to 47742. [2018-10-23 18:34:29,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47742 states. [2018-10-23 18:34:29,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47742 states to 47742 states and 52119 transitions. [2018-10-23 18:34:29,818 INFO L78 Accepts]: Start accepts. Automaton has 47742 states and 52119 transitions. Word has length 603 [2018-10-23 18:34:29,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:34:29,819 INFO L481 AbstractCegarLoop]: Abstraction has 47742 states and 52119 transitions. [2018-10-23 18:34:29,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:34:29,819 INFO L276 IsEmpty]: Start isEmpty. Operand 47742 states and 52119 transitions. [2018-10-23 18:34:29,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2018-10-23 18:34:29,841 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:34:29,841 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:34:29,842 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:34:29,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:34:29,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1668731109, now seen corresponding path program 1 times [2018-10-23 18:34:29,843 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:34:29,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:34:29,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:29,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:34:29,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:34:30,541 INFO L134 CoverageAnalysis]: Checked inductivity of 579 backedges. 490 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-10-23 18:34:30,541 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:34:30,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:34:30,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:34:30,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:34:30,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:34:30,543 INFO L87 Difference]: Start difference. First operand 47742 states and 52119 transitions. Second operand 4 states. [2018-10-23 18:34:37,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:34:37,075 INFO L93 Difference]: Finished difference Result 114845 states and 127479 transitions. [2018-10-23 18:34:37,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:34:37,076 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 608 [2018-10-23 18:34:37,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:34:37,143 INFO L225 Difference]: With dead ends: 114845 [2018-10-23 18:34:37,143 INFO L226 Difference]: Without dead ends: 67796 [2018-10-23 18:34:37,181 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:34:37,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67796 states. [2018-10-23 18:34:38,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67796 to 57416. [2018-10-23 18:34:38,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57416 states. [2018-10-23 18:34:38,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57416 states to 57416 states and 62528 transitions. [2018-10-23 18:34:38,385 INFO L78 Accepts]: Start accepts. Automaton has 57416 states and 62528 transitions. Word has length 608 [2018-10-23 18:34:38,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:34:38,386 INFO L481 AbstractCegarLoop]: Abstraction has 57416 states and 62528 transitions. [2018-10-23 18:34:38,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:34:38,386 INFO L276 IsEmpty]: Start isEmpty. Operand 57416 states and 62528 transitions. [2018-10-23 18:34:38,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2018-10-23 18:34:38,412 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:34:38,412 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:34:38,413 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:34:38,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:34:38,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1547512773, now seen corresponding path program 1 times [2018-10-23 18:34:38,413 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:34:38,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:34:38,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:38,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:34:38,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:34:38,940 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 449 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-10-23 18:34:38,941 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:34:38,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:34:38,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:34:38,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:34:38,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:34:38,942 INFO L87 Difference]: Start difference. First operand 57416 states and 62528 transitions. Second operand 4 states. [2018-10-23 18:34:43,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:34:43,767 INFO L93 Difference]: Finished difference Result 127268 states and 139294 transitions. [2018-10-23 18:34:43,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:34:43,767 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 671 [2018-10-23 18:34:43,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:34:43,832 INFO L225 Difference]: With dead ends: 127268 [2018-10-23 18:34:43,832 INFO L226 Difference]: Without dead ends: 70545 [2018-10-23 18:34:43,864 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:34:43,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70545 states. [2018-10-23 18:34:44,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70545 to 69854. [2018-10-23 18:34:44,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69854 states. [2018-10-23 18:34:44,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69854 states to 69854 states and 75117 transitions. [2018-10-23 18:34:44,796 INFO L78 Accepts]: Start accepts. Automaton has 69854 states and 75117 transitions. Word has length 671 [2018-10-23 18:34:44,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:34:44,797 INFO L481 AbstractCegarLoop]: Abstraction has 69854 states and 75117 transitions. [2018-10-23 18:34:44,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:34:44,797 INFO L276 IsEmpty]: Start isEmpty. Operand 69854 states and 75117 transitions. [2018-10-23 18:34:44,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1321 [2018-10-23 18:34:44,830 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:34:44,831 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:34:44,831 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:34:44,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:34:44,832 INFO L82 PathProgramCache]: Analyzing trace with hash -782361504, now seen corresponding path program 1 times [2018-10-23 18:34:44,832 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:34:44,832 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:34:44,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:44,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:34:44,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:34:47,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1636 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2018-10-23 18:34:47,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:34:47,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:34:47,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:34:47,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:34:47,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:34:47,063 INFO L87 Difference]: Start difference. First operand 69854 states and 75117 transitions. Second operand 3 states. [2018-10-23 18:34:50,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:34:50,758 INFO L93 Difference]: Finished difference Result 139015 states and 149540 transitions. [2018-10-23 18:34:50,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:34:50,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1320 [2018-10-23 18:34:50,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:34:50,829 INFO L225 Difference]: With dead ends: 139015 [2018-10-23 18:34:50,829 INFO L226 Difference]: Without dead ends: 69854 [2018-10-23 18:34:50,866 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:34:50,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69854 states. [2018-10-23 18:34:51,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69854 to 69854. [2018-10-23 18:34:51,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69854 states. [2018-10-23 18:34:51,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69854 states to 69854 states and 73959 transitions. [2018-10-23 18:34:51,500 INFO L78 Accepts]: Start accepts. Automaton has 69854 states and 73959 transitions. Word has length 1320 [2018-10-23 18:34:51,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:34:51,503 INFO L481 AbstractCegarLoop]: Abstraction has 69854 states and 73959 transitions. [2018-10-23 18:34:51,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:34:51,503 INFO L276 IsEmpty]: Start isEmpty. Operand 69854 states and 73959 transitions. [2018-10-23 18:34:51,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1648 [2018-10-23 18:34:51,576 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:34:51,578 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:34:51,578 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:34:51,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:34:51,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1141077893, now seen corresponding path program 1 times [2018-10-23 18:34:51,579 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:34:51,579 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:34:51,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:51,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:34:51,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:34:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:34:54,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2685 backedges. 1229 proven. 0 refuted. 0 times theorem prover too weak. 1456 trivial. 0 not checked. [2018-10-23 18:34:54,892 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:34:54,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:34:54,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:34:54,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:34:54,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:34:54,895 INFO L87 Difference]: Start difference. First operand 69854 states and 73959 transitions. Second operand 4 states. [2018-10-23 18:35:00,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:35:00,606 INFO L93 Difference]: Finished difference Result 187384 states and 199776 transitions. [2018-10-23 18:35:00,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:35:00,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1647 [2018-10-23 18:35:00,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:35:00,715 INFO L225 Difference]: With dead ends: 187384 [2018-10-23 18:35:00,715 INFO L226 Difference]: Without dead ends: 107840 [2018-10-23 18:35:00,756 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:35:00,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107840 states. [2018-10-23 18:35:02,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107840 to 106458. [2018-10-23 18:35:02,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106458 states. [2018-10-23 18:35:02,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106458 states to 106458 states and 111216 transitions. [2018-10-23 18:35:02,179 INFO L78 Accepts]: Start accepts. Automaton has 106458 states and 111216 transitions. Word has length 1647 [2018-10-23 18:35:02,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:35:02,180 INFO L481 AbstractCegarLoop]: Abstraction has 106458 states and 111216 transitions. [2018-10-23 18:35:02,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:35:02,181 INFO L276 IsEmpty]: Start isEmpty. Operand 106458 states and 111216 transitions. [2018-10-23 18:35:02,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1799 [2018-10-23 18:35:02,255 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:35:02,256 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:35:02,256 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:35:02,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:35:02,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1286574548, now seen corresponding path program 1 times [2018-10-23 18:35:02,257 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:35:02,257 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:35:02,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:35:02,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:35:02,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:35:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:35:05,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3228 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 3108 trivial. 0 not checked. [2018-10-23 18:35:05,161 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:35:05,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:35:05,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:35:05,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:35:05,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:35:05,163 INFO L87 Difference]: Start difference. First operand 106458 states and 111216 transitions. Second operand 3 states. [2018-10-23 18:35:08,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:35:08,378 INFO L93 Difference]: Finished difference Result 212223 states and 221738 transitions. [2018-10-23 18:35:08,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:35:08,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1798 [2018-10-23 18:35:08,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:35:08,499 INFO L225 Difference]: With dead ends: 212223 [2018-10-23 18:35:08,499 INFO L226 Difference]: Without dead ends: 106458 [2018-10-23 18:35:08,553 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:35:08,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106458 states. [2018-10-23 18:35:09,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106458 to 106458. [2018-10-23 18:35:09,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106458 states. [2018-10-23 18:35:09,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106458 states to 106458 states and 110290 transitions. [2018-10-23 18:35:09,394 INFO L78 Accepts]: Start accepts. Automaton has 106458 states and 110290 transitions. Word has length 1798 [2018-10-23 18:35:09,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:35:09,395 INFO L481 AbstractCegarLoop]: Abstraction has 106458 states and 110290 transitions. [2018-10-23 18:35:09,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:35:09,395 INFO L276 IsEmpty]: Start isEmpty. Operand 106458 states and 110290 transitions. [2018-10-23 18:35:09,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1802 [2018-10-23 18:35:09,474 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:35:09,475 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-10-23 18:35:09,475 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:35:09,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:35:09,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1480590529, now seen corresponding path program 1 times [2018-10-23 18:35:09,476 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:35:09,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:35:09,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:35:09,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:35:09,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:35:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:35:11,319 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 6 [2018-10-23 18:35:11,586 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-10-23 18:35:11,860 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 8 [2018-10-23 18:35:12,077 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 8 [2018-10-23 18:35:14,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3027 backedges. 1362 proven. 0 refuted. 0 times theorem prover too weak. 1665 trivial. 0 not checked. [2018-10-23 18:35:14,608 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:35:14,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-23 18:35:14,609 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 18:35:14,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 18:35:14,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:35:14,610 INFO L87 Difference]: Start difference. First operand 106458 states and 110290 transitions. Second operand 8 states. [2018-10-23 18:35:28,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:35:28,433 INFO L93 Difference]: Finished difference Result 280349 states and 290397 transitions. [2018-10-23 18:35:28,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-23 18:35:28,434 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1801 [2018-10-23 18:35:28,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:35:28,589 INFO L225 Difference]: With dead ends: 280349 [2018-10-23 18:35:28,589 INFO L226 Difference]: Without dead ends: 163508 [2018-10-23 18:35:28,647 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2018-10-23 18:35:29,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163508 states. [2018-10-23 18:35:29,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163508 to 97901. [2018-10-23 18:35:29,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97901 states. [2018-10-23 18:35:29,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97901 states to 97901 states and 101069 transitions. [2018-10-23 18:35:29,896 INFO L78 Accepts]: Start accepts. Automaton has 97901 states and 101069 transitions. Word has length 1801 [2018-10-23 18:35:29,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:35:29,897 INFO L481 AbstractCegarLoop]: Abstraction has 97901 states and 101069 transitions. [2018-10-23 18:35:29,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 18:35:29,898 INFO L276 IsEmpty]: Start isEmpty. Operand 97901 states and 101069 transitions. [2018-10-23 18:35:29,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1803 [2018-10-23 18:35:29,952 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:35:29,953 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-10-23 18:35:29,954 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:35:29,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:35:29,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1848367057, now seen corresponding path program 1 times [2018-10-23 18:35:29,954 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:35:29,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:35:29,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:35:29,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:35:29,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:35:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:35:31,388 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 18:35:34,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3031 backedges. 1771 proven. 724 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2018-10-23 18:35:34,854 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:35:34,854 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:35:34,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:35:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:35:35,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:35:36,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3031 backedges. 1905 proven. 0 refuted. 0 times theorem prover too weak. 1126 trivial. 0 not checked. [2018-10-23 18:35:36,566 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:35:36,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2018-10-23 18:35:36,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 18:35:36,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 18:35:36,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-23 18:35:36,570 INFO L87 Difference]: Start difference. First operand 97901 states and 101069 transitions. Second operand 10 states. [2018-10-23 18:35:53,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:35:53,555 INFO L93 Difference]: Finished difference Result 330998 states and 342016 transitions. [2018-10-23 18:35:53,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-23 18:35:53,555 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1802 [2018-10-23 18:35:53,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:35:53,766 INFO L225 Difference]: With dead ends: 330998 [2018-10-23 18:35:53,766 INFO L226 Difference]: Without dead ends: 199394 [2018-10-23 18:35:53,833 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1836 GetRequests, 1814 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2018-10-23 18:35:53,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199394 states. [2018-10-23 18:35:55,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199394 to 82925. [2018-10-23 18:35:55,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82925 states. [2018-10-23 18:35:55,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82925 states to 82925 states and 84899 transitions. [2018-10-23 18:35:55,097 INFO L78 Accepts]: Start accepts. Automaton has 82925 states and 84899 transitions. Word has length 1802 [2018-10-23 18:35:55,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:35:55,097 INFO L481 AbstractCegarLoop]: Abstraction has 82925 states and 84899 transitions. [2018-10-23 18:35:55,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-23 18:35:55,098 INFO L276 IsEmpty]: Start isEmpty. Operand 82925 states and 84899 transitions. [2018-10-23 18:35:55,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1944 [2018-10-23 18:35:55,148 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:35:55,150 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:35:55,150 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:35:55,150 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:35:55,151 INFO L82 PathProgramCache]: Analyzing trace with hash 311474606, now seen corresponding path program 1 times [2018-10-23 18:35:55,151 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:35:55,151 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:35:55,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:35:55,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:35:55,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:35:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:35:57,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 2468 proven. 0 refuted. 0 times theorem prover too weak. 1692 trivial. 0 not checked. [2018-10-23 18:35:57,746 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:35:57,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:35:57,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:35:57,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:35:57,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:35:57,749 INFO L87 Difference]: Start difference. First operand 82925 states and 84899 transitions. Second operand 4 states. [2018-10-23 18:36:02,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:36:02,511 INFO L93 Difference]: Finished difference Result 165157 states and 169104 transitions. [2018-10-23 18:36:02,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:36:02,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1943 [2018-10-23 18:36:02,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:36:02,585 INFO L225 Difference]: With dead ends: 165157 [2018-10-23 18:36:02,586 INFO L226 Difference]: Without dead ends: 82925 [2018-10-23 18:36:02,622 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:36:02,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82925 states. [2018-10-23 18:36:03,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82925 to 82925. [2018-10-23 18:36:03,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82925 states. [2018-10-23 18:36:03,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82925 states to 82925 states and 84737 transitions. [2018-10-23 18:36:03,294 INFO L78 Accepts]: Start accepts. Automaton has 82925 states and 84737 transitions. Word has length 1943 [2018-10-23 18:36:03,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:36:03,296 INFO L481 AbstractCegarLoop]: Abstraction has 82925 states and 84737 transitions. [2018-10-23 18:36:03,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:36:03,296 INFO L276 IsEmpty]: Start isEmpty. Operand 82925 states and 84737 transitions. [2018-10-23 18:36:03,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2005 [2018-10-23 18:36:03,356 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:36:03,357 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-10-23 18:36:03,358 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:36:03,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:36:03,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1971542568, now seen corresponding path program 1 times [2018-10-23 18:36:03,358 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:36:03,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:36:03,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:36:03,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:36:03,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:36:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:36:04,701 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-23 18:36:06,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3858 backedges. 2788 proven. 0 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2018-10-23 18:36:06,362 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:36:06,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:36:06,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:36:06,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:36:06,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:36:06,364 INFO L87 Difference]: Start difference. First operand 82925 states and 84737 transitions. Second operand 4 states. [2018-10-23 18:36:10,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:36:10,767 INFO L93 Difference]: Finished difference Result 181741 states and 185916 transitions. [2018-10-23 18:36:10,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:36:10,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 2004 [2018-10-23 18:36:10,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:36:10,869 INFO L225 Difference]: With dead ends: 181741 [2018-10-23 18:36:10,869 INFO L226 Difference]: Without dead ends: 99509 [2018-10-23 18:36:10,913 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:36:10,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99509 states. [2018-10-23 18:36:11,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99509 to 98127. [2018-10-23 18:36:11,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98127 states. [2018-10-23 18:36:11,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98127 states to 98127 states and 99904 transitions. [2018-10-23 18:36:11,774 INFO L78 Accepts]: Start accepts. Automaton has 98127 states and 99904 transitions. Word has length 2004 [2018-10-23 18:36:11,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:36:11,775 INFO L481 AbstractCegarLoop]: Abstraction has 98127 states and 99904 transitions. [2018-10-23 18:36:11,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:36:11,775 INFO L276 IsEmpty]: Start isEmpty. Operand 98127 states and 99904 transitions. [2018-10-23 18:36:11,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2134 [2018-10-23 18:36:11,843 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:36:11,844 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:36:11,844 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:36:11,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:36:11,845 INFO L82 PathProgramCache]: Analyzing trace with hash -391539043, now seen corresponding path program 1 times [2018-10-23 18:36:11,845 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:36:11,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:36:11,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:36:11,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:36:11,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:36:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:36:13,341 WARN L179 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-10-23 18:36:15,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4961 backedges. 3208 proven. 0 refuted. 0 times theorem prover too weak. 1753 trivial. 0 not checked. [2018-10-23 18:36:15,050 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:36:15,050 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:36:15,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:36:15,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:36:15,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:36:15,052 INFO L87 Difference]: Start difference. First operand 98127 states and 99904 transitions. Second operand 4 states. [2018-10-23 18:36:20,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:36:20,852 INFO L93 Difference]: Finished difference Result 197634 states and 201224 transitions. [2018-10-23 18:36:20,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:36:20,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 2133 [2018-10-23 18:36:20,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:36:20,978 INFO L225 Difference]: With dead ends: 197634 [2018-10-23 18:36:20,979 INFO L226 Difference]: Without dead ends: 100200 [2018-10-23 18:36:21,042 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:36:21,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100200 states. [2018-10-23 18:36:21,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100200 to 98127. [2018-10-23 18:36:21,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98127 states. [2018-10-23 18:36:21,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98127 states to 98127 states and 99699 transitions. [2018-10-23 18:36:21,933 INFO L78 Accepts]: Start accepts. Automaton has 98127 states and 99699 transitions. Word has length 2133 [2018-10-23 18:36:21,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:36:21,934 INFO L481 AbstractCegarLoop]: Abstraction has 98127 states and 99699 transitions. [2018-10-23 18:36:21,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:36:21,934 INFO L276 IsEmpty]: Start isEmpty. Operand 98127 states and 99699 transitions. [2018-10-23 18:36:22,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2192 [2018-10-23 18:36:22,010 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:36:22,011 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:36:22,011 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:36:22,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:36:22,012 INFO L82 PathProgramCache]: Analyzing trace with hash -469299831, now seen corresponding path program 1 times [2018-10-23 18:36:22,012 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:36:22,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:36:22,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:36:22,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:36:22,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:36:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:36:28,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4619 backedges. 3623 proven. 249 refuted. 0 times theorem prover too weak. 747 trivial. 0 not checked. [2018-10-23 18:36:28,513 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:36:28,513 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:36:28,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:36:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:36:29,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:36:36,192 WARN L179 SmtUtils]: Spent 6.94 s on a formula simplification. DAG size of input: 320 DAG size of output: 28 [2018-10-23 18:36:45,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4619 backedges. 1752 proven. 0 refuted. 0 times theorem prover too weak. 2867 trivial. 0 not checked. [2018-10-23 18:36:45,498 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:36:45,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-10-23 18:36:45,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 18:36:45,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 18:36:45,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:36:45,501 INFO L87 Difference]: Start difference. First operand 98127 states and 99699 transitions. Second operand 6 states. [2018-10-23 18:36:56,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:36:56,300 INFO L93 Difference]: Finished difference Result 214911 states and 218605 transitions. [2018-10-23 18:36:56,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 18:36:56,300 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 2191 [2018-10-23 18:36:56,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:36:56,417 INFO L225 Difference]: With dead ends: 214911 [2018-10-23 18:36:56,418 INFO L226 Difference]: Without dead ends: 116094 [2018-10-23 18:36:56,466 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2197 GetRequests, 2192 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:36:56,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116094 states. [2018-10-23 18:36:57,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116094 to 105036. [2018-10-23 18:36:57,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105036 states. [2018-10-23 18:36:57,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105036 states to 105036 states and 106624 transitions. [2018-10-23 18:36:57,568 INFO L78 Accepts]: Start accepts. Automaton has 105036 states and 106624 transitions. Word has length 2191 [2018-10-23 18:36:57,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:36:57,569 INFO L481 AbstractCegarLoop]: Abstraction has 105036 states and 106624 transitions. [2018-10-23 18:36:57,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 18:36:57,570 INFO L276 IsEmpty]: Start isEmpty. Operand 105036 states and 106624 transitions. [2018-10-23 18:36:57,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2268 [2018-10-23 18:36:57,667 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:36:57,668 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:36:57,668 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:36:57,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:36:57,669 INFO L82 PathProgramCache]: Analyzing trace with hash 553577881, now seen corresponding path program 1 times [2018-10-23 18:36:57,669 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:36:57,669 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:36:57,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:36:57,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:36:57,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:36:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-23 18:37:01,502 INFO L134 CoverageAnalysis]: Checked inductivity of 5094 backedges. 2490 proven. 0 refuted. 0 times theorem prover too weak. 2604 trivial. 0 not checked. [2018-10-23 18:37:01,503 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:37:01,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:37:01,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:37:01,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:37:01,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:37:01,505 INFO L87 Difference]: Start difference. First operand 105036 states and 106624 transitions. Second operand 3 states. [2018-10-23 18:37:01,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-23 18:37:01,506 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:37:01,511 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:37:01,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:37:01 BoogieIcfgContainer [2018-10-23 18:37:01,512 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:37:01,513 INFO L168 Benchmark]: Toolchain (without parser) took 222490.96 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-23 18:37:01,514 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. [2018-10-23 18:37:01,514 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1905.33 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. [2018-10-23 18:37:01,515 INFO L168 Benchmark]: Boogie Procedure Inliner took 491.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -912.9 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-23 18:37:01,516 INFO L168 Benchmark]: Boogie Preprocessor took 312.12 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: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2018-10-23 18:37:01,517 INFO L168 Benchmark]: RCFGBuilder took 8707.17 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: 521.6 MB). Peak memory consumption was 521.6 MB. Max. memory is 7.1 GB. [2018-10-23 18:37:01,518 INFO L168 Benchmark]: TraceAbstraction took 211069.45 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 1.6 GB in the beginning and 3.4 GB in the end (delta: -1.8 GB). Peak memory consumption was 617.4 MB. Max. memory is 7.1 GB. [2018-10-23 18:37:01,523 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 1905.33 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 491.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -912.9 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 312.12 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: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8707.17 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: 521.6 MB). Peak memory consumption was 521.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211069.45 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 1.6 GB in the beginning and 3.4 GB in the end (delta: -1.8 GB). Peak memory consumption was 617.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 63). Cancelled while BasicCegarLoop was constructing difference of abstraction (105036states) and FLOYD_HOARE automaton (currently 2 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 210.9s OverallTime, 18 OverallIterations, 10 TraceHistogramMax, 134.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9146 SDtfs, 42812 SDslu, 1361 SDs, 0 SdLazy, 82008 SolverSat, 14881 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 104.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5130 GetRequests, 5034 SyntacticMatches, 26 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 12.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106458occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 13.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 215291 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 34.4s InterpolantComputationTime, 26858 NumberOfCodeBlocks, 26858 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 26836 ConstructedInterpolants, 535 QuantifiedInterpolants, 130267241 SizeOfPredicates, 0 NumberOfNonLiveVariables, 5734 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 22 InterpolantComputations, 18 PerfectInterpolantSequences, 46001/46983 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown