java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label17_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:12:04,807 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:12:04,810 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:12:04,822 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:12:04,823 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:12:04,824 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:12:04,825 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:12:04,827 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:12:04,829 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:12:04,829 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:12:04,830 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:12:04,831 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:12:04,831 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:12:04,832 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:12:04,834 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:12:04,834 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:12:04,835 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:12:04,837 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:12:04,839 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:12:04,841 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:12:04,842 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:12:04,843 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:12:04,846 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:12:04,846 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:12:04,846 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:12:04,847 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:12:04,848 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:12:04,849 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:12:04,850 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:12:04,851 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:12:04,852 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:12:04,852 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 16:12:04,852 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 16:12:04,853 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 16:12:04,854 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 16:12:04,854 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 16:12:04,855 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:12:04,880 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:12:04,880 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:12:04,881 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:12:04,881 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:12:04,882 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:12:04,882 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:12:04,882 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:12:04,883 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:12:04,883 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:12:04,883 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:12:04,883 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:12:04,885 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:12:04,885 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:12:04,885 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:12:04,885 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:12:04,886 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:12:04,886 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:12:04,886 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:12:04,886 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:12:04,886 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:12:04,888 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:12:04,888 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:12:04,888 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:12:04,888 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:12:04,889 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:12:04,889 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:12:04,889 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:12:04,889 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:12:04,965 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:12:04,981 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:12:04,985 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:12:04,986 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:12:04,987 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:12:04,987 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label17_true-unreach-call.c [2018-10-24 16:12:05,046 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ecbfac78f/1fe1d4f7469c45cd8222227f104042c7/FLAGd3ebb79e8 [2018-10-24 16:12:05,770 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:12:05,771 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label17_true-unreach-call.c [2018-10-24 16:12:05,798 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ecbfac78f/1fe1d4f7469c45cd8222227f104042c7/FLAGd3ebb79e8 [2018-10-24 16:12:05,814 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ecbfac78f/1fe1d4f7469c45cd8222227f104042c7 [2018-10-24 16:12:05,826 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:12:05,827 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:12:05,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:12:05,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:12:05,833 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:12:05,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:12:05" (1/1) ... [2018-10-24 16:12:05,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fc74075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:12:05, skipping insertion in model container [2018-10-24 16:12:05,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:12:05" (1/1) ... [2018-10-24 16:12:05,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:12:06,004 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:12:07,359 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:12:07,363 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:12:07,902 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:12:07,934 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:12:07,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:12:07 WrapperNode [2018-10-24 16:12:07,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:12:07,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:12:07,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:12:07,936 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:12:07,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:12:07" (1/1) ... [2018-10-24 16:12:07,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:12:07" (1/1) ... [2018-10-24 16:12:08,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:12:08,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:12:08,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:12:08,556 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:12:08,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:12:07" (1/1) ... [2018-10-24 16:12:08,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:12:07" (1/1) ... [2018-10-24 16:12:08,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:12:07" (1/1) ... [2018-10-24 16:12:08,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:12:07" (1/1) ... [2018-10-24 16:12:08,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:12:07" (1/1) ... [2018-10-24 16:12:08,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:12:07" (1/1) ... [2018-10-24 16:12:08,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:12:07" (1/1) ... [2018-10-24 16:12:08,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:12:08,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:12:08,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:12:08,885 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:12:08,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:12:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:12:08,965 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:12:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:12:08,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:12:17,373 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:12:17,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:12:17 BoogieIcfgContainer [2018-10-24 16:12:17,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:12:17,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:12:17,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:12:17,378 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:12:17,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:12:05" (1/3) ... [2018-10-24 16:12:17,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b63ea08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:12:17, skipping insertion in model container [2018-10-24 16:12:17,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:12:07" (2/3) ... [2018-10-24 16:12:17,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b63ea08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:12:17, skipping insertion in model container [2018-10-24 16:12:17,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:12:17" (3/3) ... [2018-10-24 16:12:17,382 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label17_true-unreach-call.c [2018-10-24 16:12:17,392 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:12:17,401 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:12:17,418 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:12:17,465 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:12:17,466 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:12:17,466 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:12:17,466 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:12:17,467 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:12:17,467 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:12:17,467 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:12:17,467 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:12:17,467 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:12:17,509 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-24 16:12:17,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-24 16:12:17,524 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:12:17,525 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:12:17,527 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:12:17,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:12:17,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1074275470, now seen corresponding path program 1 times [2018-10-24 16:12:17,538 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:12:17,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:12:17,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:17,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:17,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:18,111 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-10-24 16:12:18,334 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 16 [2018-10-24 16:12:18,560 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 21 [2018-10-24 16:12:18,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:12:18,629 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:12:18,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 16:12:18,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:12:18,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:12:18,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:12:18,653 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 7 states. [2018-10-24 16:12:39,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:12:39,696 INFO L93 Difference]: Finished difference Result 5413 states and 10642 transitions. [2018-10-24 16:12:39,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:12:39,698 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2018-10-24 16:12:39,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:12:39,759 INFO L225 Difference]: With dead ends: 5413 [2018-10-24 16:12:39,759 INFO L226 Difference]: Without dead ends: 4578 [2018-10-24 16:12:39,767 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-10-24 16:12:39,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4578 states. [2018-10-24 16:12:39,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4578 to 3072. [2018-10-24 16:12:39,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3072 states. [2018-10-24 16:12:39,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4384 transitions. [2018-10-24 16:12:39,958 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4384 transitions. Word has length 41 [2018-10-24 16:12:39,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:12:39,959 INFO L481 AbstractCegarLoop]: Abstraction has 3072 states and 4384 transitions. [2018-10-24 16:12:39,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:12:39,959 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4384 transitions. [2018-10-24 16:12:39,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-24 16:12:39,969 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:12:39,969 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:12:39,970 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:12:39,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:12:39,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1425155533, now seen corresponding path program 1 times [2018-10-24 16:12:39,970 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:12:39,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:12:39,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:39,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:39,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:40,460 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 137 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 16:12:40,460 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:12:40,460 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:12:40,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:40,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:12:40,690 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 16:12:40,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:12:40,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-10-24 16:12:40,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:12:40,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:12:40,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:12:40,716 INFO L87 Difference]: Start difference. First operand 3072 states and 4384 transitions. Second operand 6 states. [2018-10-24 16:12:42,023 WARN L179 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-10-24 16:13:04,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:13:04,294 INFO L93 Difference]: Finished difference Result 15950 states and 24157 transitions. [2018-10-24 16:13:04,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 16:13:04,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2018-10-24 16:13:04,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:13:04,345 INFO L225 Difference]: With dead ends: 15950 [2018-10-24 16:13:04,345 INFO L226 Difference]: Without dead ends: 10621 [2018-10-24 16:13:04,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:13:04,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10621 states. [2018-10-24 16:13:04,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10621 to 4575. [2018-10-24 16:13:04,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4575 states. [2018-10-24 16:13:04,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4575 states to 4575 states and 5823 transitions. [2018-10-24 16:13:04,489 INFO L78 Accepts]: Start accepts. Automaton has 4575 states and 5823 transitions. Word has length 183 [2018-10-24 16:13:04,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:13:04,490 INFO L481 AbstractCegarLoop]: Abstraction has 4575 states and 5823 transitions. [2018-10-24 16:13:04,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:13:04,490 INFO L276 IsEmpty]: Start isEmpty. Operand 4575 states and 5823 transitions. [2018-10-24 16:13:04,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-24 16:13:04,497 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:13:04,497 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:13:04,498 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:13:04,498 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:13:04,498 INFO L82 PathProgramCache]: Analyzing trace with hash -563431620, now seen corresponding path program 1 times [2018-10-24 16:13:04,498 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:13:04,498 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:13:04,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:04,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:04,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:04,983 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 16:13:05,483 WARN L179 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2018-10-24 16:13:05,704 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 128 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-24 16:13:05,705 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:13:05,705 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:13:05,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:05,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:13:06,028 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-24 16:13:06,060 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:13:06,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2018-10-24 16:13:06,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:13:06,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:13:06,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:13:06,063 INFO L87 Difference]: Start difference. First operand 4575 states and 5823 transitions. Second operand 7 states. [2018-10-24 16:13:17,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:13:17,954 INFO L93 Difference]: Finished difference Result 17421 states and 22220 transitions. [2018-10-24 16:13:17,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:13:17,958 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 253 [2018-10-24 16:13:17,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:13:18,026 INFO L225 Difference]: With dead ends: 17421 [2018-10-24 16:13:18,026 INFO L226 Difference]: Without dead ends: 12848 [2018-10-24 16:13:18,037 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 253 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-10-24 16:13:18,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12848 states. [2018-10-24 16:13:18,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12848 to 11343. [2018-10-24 16:13:18,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11343 states. [2018-10-24 16:13:18,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11343 states to 11343 states and 13234 transitions. [2018-10-24 16:13:18,292 INFO L78 Accepts]: Start accepts. Automaton has 11343 states and 13234 transitions. Word has length 253 [2018-10-24 16:13:18,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:13:18,293 INFO L481 AbstractCegarLoop]: Abstraction has 11343 states and 13234 transitions. [2018-10-24 16:13:18,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:13:18,293 INFO L276 IsEmpty]: Start isEmpty. Operand 11343 states and 13234 transitions. [2018-10-24 16:13:18,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-24 16:13:18,303 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:13:18,304 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 16:13:18,304 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:13:18,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:13:18,305 INFO L82 PathProgramCache]: Analyzing trace with hash -365464936, now seen corresponding path program 1 times [2018-10-24 16:13:18,305 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:13:18,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:13:18,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:18,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:18,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:18,990 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 77 proven. 4 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-10-24 16:13:18,990 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:13:18,990 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 [2018-10-24 16:13:19,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:19,090 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:13:19,174 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:13:19,214 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:13:19,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:13:19,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:13:19,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:13:19,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:13:19,215 INFO L87 Difference]: Start difference. First operand 11343 states and 13234 transitions. Second operand 4 states. [2018-10-24 16:13:30,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:13:30,944 INFO L93 Difference]: Finished difference Result 38537 states and 45823 transitions. [2018-10-24 16:13:30,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:13:30,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 274 [2018-10-24 16:13:30,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:13:31,005 INFO L225 Difference]: With dead ends: 38537 [2018-10-24 16:13:31,006 INFO L226 Difference]: Without dead ends: 27196 [2018-10-24 16:13:31,025 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 274 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:13:31,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27196 states. [2018-10-24 16:13:31,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27196 to 15855. [2018-10-24 16:13:31,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15855 states. [2018-10-24 16:13:31,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15855 states to 15855 states and 18576 transitions. [2018-10-24 16:13:31,329 INFO L78 Accepts]: Start accepts. Automaton has 15855 states and 18576 transitions. Word has length 274 [2018-10-24 16:13:31,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:13:31,330 INFO L481 AbstractCegarLoop]: Abstraction has 15855 states and 18576 transitions. [2018-10-24 16:13:31,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:13:31,330 INFO L276 IsEmpty]: Start isEmpty. Operand 15855 states and 18576 transitions. [2018-10-24 16:13:31,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-10-24 16:13:31,336 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:13:31,336 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:13:31,336 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:13:31,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:13:31,337 INFO L82 PathProgramCache]: Analyzing trace with hash 402036965, now seen corresponding path program 1 times [2018-10-24 16:13:31,338 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:13:31,338 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:13:31,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:31,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:31,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:13:31,736 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:13:31,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:13:31,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:13:31,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:13:31,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:13:31,738 INFO L87 Difference]: Start difference. First operand 15855 states and 18576 transitions. Second operand 4 states. [2018-10-24 16:13:39,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:13:39,835 INFO L93 Difference]: Finished difference Result 57276 states and 67801 transitions. [2018-10-24 16:13:39,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:13:39,840 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 295 [2018-10-24 16:13:39,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:13:39,922 INFO L225 Difference]: With dead ends: 57276 [2018-10-24 16:13:39,922 INFO L226 Difference]: Without dead ends: 41423 [2018-10-24 16:13:39,947 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:13:39,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41423 states. [2018-10-24 16:13:40,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41423 to 41423. [2018-10-24 16:13:40,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41423 states. [2018-10-24 16:13:40,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41423 states to 41423 states and 47908 transitions. [2018-10-24 16:13:40,463 INFO L78 Accepts]: Start accepts. Automaton has 41423 states and 47908 transitions. Word has length 295 [2018-10-24 16:13:40,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:13:40,464 INFO L481 AbstractCegarLoop]: Abstraction has 41423 states and 47908 transitions. [2018-10-24 16:13:40,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:13:40,464 INFO L276 IsEmpty]: Start isEmpty. Operand 41423 states and 47908 transitions. [2018-10-24 16:13:40,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-10-24 16:13:40,479 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:13:40,480 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:13:40,480 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:13:40,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:13:40,480 INFO L82 PathProgramCache]: Analyzing trace with hash -367565781, now seen corresponding path program 1 times [2018-10-24 16:13:40,480 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:13:40,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:13:40,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:40,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:40,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:41,077 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-24 16:13:41,078 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:13:41,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:13:41,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:13:41,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:13:41,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:13:41,079 INFO L87 Difference]: Start difference. First operand 41423 states and 47908 transitions. Second operand 4 states. [2018-10-24 16:13:54,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:13:54,389 INFO L93 Difference]: Finished difference Result 85100 states and 98365 transitions. [2018-10-24 16:13:54,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:13:54,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 396 [2018-10-24 16:13:54,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:13:54,442 INFO L225 Difference]: With dead ends: 85100 [2018-10-24 16:13:54,442 INFO L226 Difference]: Without dead ends: 40669 [2018-10-24 16:13:54,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:13:54,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40669 states. [2018-10-24 16:13:54,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40669 to 40669. [2018-10-24 16:13:54,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40669 states. [2018-10-24 16:13:54,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40669 states to 40669 states and 44950 transitions. [2018-10-24 16:13:54,956 INFO L78 Accepts]: Start accepts. Automaton has 40669 states and 44950 transitions. Word has length 396 [2018-10-24 16:13:54,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:13:54,957 INFO L481 AbstractCegarLoop]: Abstraction has 40669 states and 44950 transitions. [2018-10-24 16:13:54,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:13:54,957 INFO L276 IsEmpty]: Start isEmpty. Operand 40669 states and 44950 transitions. [2018-10-24 16:13:54,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-10-24 16:13:54,972 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:13:54,972 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:13:54,973 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:13:54,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:13:54,973 INFO L82 PathProgramCache]: Analyzing trace with hash -534694013, now seen corresponding path program 1 times [2018-10-24 16:13:54,973 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:13:54,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:13:54,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:54,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:54,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:55,580 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 332 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-10-24 16:13:55,580 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:13:55,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:13:55,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:13:55,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:13:55,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:13:55,582 INFO L87 Difference]: Start difference. First operand 40669 states and 44950 transitions. Second operand 4 states. [2018-10-24 16:14:08,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:14:08,293 INFO L93 Difference]: Finished difference Result 103896 states and 115427 transitions. [2018-10-24 16:14:08,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:14:08,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 400 [2018-10-24 16:14:08,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:14:08,367 INFO L225 Difference]: With dead ends: 103896 [2018-10-24 16:14:08,367 INFO L226 Difference]: Without dead ends: 63981 [2018-10-24 16:14:08,393 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 [2018-10-24 16:14:08,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63981 states. [2018-10-24 16:14:08,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63981 to 59469. [2018-10-24 16:14:08,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59469 states. [2018-10-24 16:14:09,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59469 states to 59469 states and 63941 transitions. [2018-10-24 16:14:09,049 INFO L78 Accepts]: Start accepts. Automaton has 59469 states and 63941 transitions. Word has length 400 [2018-10-24 16:14:09,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:14:09,050 INFO L481 AbstractCegarLoop]: Abstraction has 59469 states and 63941 transitions. [2018-10-24 16:14:09,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:14:09,050 INFO L276 IsEmpty]: Start isEmpty. Operand 59469 states and 63941 transitions. [2018-10-24 16:14:09,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2018-10-24 16:14:09,069 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:14:09,069 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:14:09,070 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:14:09,070 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:14:09,070 INFO L82 PathProgramCache]: Analyzing trace with hash -541352502, now seen corresponding path program 1 times [2018-10-24 16:14:09,070 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:14:09,070 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:14:09,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:09,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:14:09,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:14:09,588 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-24 16:14:09,589 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:14:09,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 16:14:09,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:14:09,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:14:09,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:14:09,590 INFO L87 Difference]: Start difference. First operand 59469 states and 63941 transitions. Second operand 6 states. [2018-10-24 16:14:17,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:14:17,543 INFO L93 Difference]: Finished difference Result 135216 states and 145158 transitions. [2018-10-24 16:14:17,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:14:17,544 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 441 [2018-10-24 16:14:17,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:14:17,605 INFO L225 Difference]: With dead ends: 135216 [2018-10-24 16:14:17,605 INFO L226 Difference]: Without dead ends: 64437 [2018-10-24 16:14:18,065 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:14:18,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64437 states. [2018-10-24 16:14:18,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64437 to 62445. [2018-10-24 16:14:18,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62445 states. [2018-10-24 16:14:18,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62445 states to 62445 states and 66392 transitions. [2018-10-24 16:14:18,695 INFO L78 Accepts]: Start accepts. Automaton has 62445 states and 66392 transitions. Word has length 441 [2018-10-24 16:14:18,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:14:18,696 INFO L481 AbstractCegarLoop]: Abstraction has 62445 states and 66392 transitions. [2018-10-24 16:14:18,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:14:18,697 INFO L276 IsEmpty]: Start isEmpty. Operand 62445 states and 66392 transitions. [2018-10-24 16:14:18,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2018-10-24 16:14:18,709 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:14:18,710 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:14:18,710 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:14:18,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:14:18,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1867752915, now seen corresponding path program 1 times [2018-10-24 16:14:18,710 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:14:18,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:14:18,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:18,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:14:18,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:14:19,206 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2018-10-24 16:14:19,206 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:14:19,206 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:14:19,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:14:19,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:14:19,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:14:19,208 INFO L87 Difference]: Start difference. First operand 62445 states and 66392 transitions. Second operand 4 states. [2018-10-24 16:14:27,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:14:27,604 INFO L93 Difference]: Finished difference Result 176783 states and 187880 transitions. [2018-10-24 16:14:27,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:14:27,605 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 444 [2018-10-24 16:14:27,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:14:27,723 INFO L225 Difference]: With dead ends: 176783 [2018-10-24 16:14:27,723 INFO L226 Difference]: Without dead ends: 113586 [2018-10-24 16:14:27,766 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:14:27,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113586 states. [2018-10-24 16:14:29,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113586 to 92524. [2018-10-24 16:14:29,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92524 states. [2018-10-24 16:14:29,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92524 states to 92524 states and 97371 transitions. [2018-10-24 16:14:29,323 INFO L78 Accepts]: Start accepts. Automaton has 92524 states and 97371 transitions. Word has length 444 [2018-10-24 16:14:29,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:14:29,324 INFO L481 AbstractCegarLoop]: Abstraction has 92524 states and 97371 transitions. [2018-10-24 16:14:29,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:14:29,324 INFO L276 IsEmpty]: Start isEmpty. Operand 92524 states and 97371 transitions. [2018-10-24 16:14:29,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-10-24 16:14:29,338 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:14:29,338 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:14:29,339 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:14:29,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:14:29,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1149301670, now seen corresponding path program 1 times [2018-10-24 16:14:29,339 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:14:29,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:14:29,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:29,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:14:29,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:14:29,738 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 534 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-10-24 16:14:29,739 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:14:29,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:14:29,740 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:14:29,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:14:29,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:14:29,740 INFO L87 Difference]: Start difference. First operand 92524 states and 97371 transitions. Second operand 4 states. [2018-10-24 16:14:41,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:14:41,117 INFO L93 Difference]: Finished difference Result 197830 states and 207869 transitions. [2018-10-24 16:14:41,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:14:41,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 478 [2018-10-24 16:14:41,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:14:41,220 INFO L225 Difference]: With dead ends: 197830 [2018-10-24 16:14:41,220 INFO L226 Difference]: Without dead ends: 106060 [2018-10-24 16:14:41,259 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:14:41,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106060 states. [2018-10-24 16:14:42,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106060 to 98540. [2018-10-24 16:14:42,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98540 states. [2018-10-24 16:14:42,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98540 states to 98540 states and 102977 transitions. [2018-10-24 16:14:42,817 INFO L78 Accepts]: Start accepts. Automaton has 98540 states and 102977 transitions. Word has length 478 [2018-10-24 16:14:42,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:14:42,818 INFO L481 AbstractCegarLoop]: Abstraction has 98540 states and 102977 transitions. [2018-10-24 16:14:42,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:14:42,818 INFO L276 IsEmpty]: Start isEmpty. Operand 98540 states and 102977 transitions. [2018-10-24 16:14:42,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-10-24 16:14:42,829 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:14:42,829 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 16:14:42,830 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:14:42,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:14:42,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1110604286, now seen corresponding path program 1 times [2018-10-24 16:14:42,830 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:14:42,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:14:42,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:42,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:14:42,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:14:43,267 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 379 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-24 16:14:43,267 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:14:43,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:14:43,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:14:43,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:14:43,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:14:43,268 INFO L87 Difference]: Start difference. First operand 98540 states and 102977 transitions. Second operand 4 states. [2018-10-24 16:14:50,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:14:50,421 INFO L93 Difference]: Finished difference Result 196326 states and 205195 transitions. [2018-10-24 16:14:50,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:14:50,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 506 [2018-10-24 16:14:50,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:14:50,520 INFO L225 Difference]: With dead ends: 196326 [2018-10-24 16:14:50,520 INFO L226 Difference]: Without dead ends: 98540 [2018-10-24 16:14:50,564 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 [2018-10-24 16:14:50,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98540 states. [2018-10-24 16:14:52,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98540 to 97788. [2018-10-24 16:14:52,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97788 states. [2018-10-24 16:14:52,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97788 states to 97788 states and 101191 transitions. [2018-10-24 16:14:52,395 INFO L78 Accepts]: Start accepts. Automaton has 97788 states and 101191 transitions. Word has length 506 [2018-10-24 16:14:52,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:14:52,396 INFO L481 AbstractCegarLoop]: Abstraction has 97788 states and 101191 transitions. [2018-10-24 16:14:52,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:14:52,397 INFO L276 IsEmpty]: Start isEmpty. Operand 97788 states and 101191 transitions. [2018-10-24 16:14:52,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2018-10-24 16:14:52,406 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:14:52,407 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:14:52,407 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:14:52,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:14:52,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1309527391, now seen corresponding path program 1 times [2018-10-24 16:14:52,407 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:14:52,408 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:14:52,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:52,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:14:52,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:14:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:14:53,070 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2018-10-24 16:14:53,070 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:14:53,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:14:53,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:14:53,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:14:53,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:14:53,071 INFO L87 Difference]: Start difference. First operand 97788 states and 101191 transitions. Second operand 5 states. [2018-10-24 16:15:04,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:15:04,735 INFO L93 Difference]: Finished difference Result 288848 states and 298995 transitions. [2018-10-24 16:15:04,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:15:04,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 558 [2018-10-24 16:15:04,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:15:04,950 INFO L225 Difference]: With dead ends: 288848 [2018-10-24 16:15:04,950 INFO L226 Difference]: Without dead ends: 191814 [2018-10-24 16:15:05,003 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:15:05,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191814 states. [2018-10-24 16:15:06,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191814 to 157971. [2018-10-24 16:15:06,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157971 states. [2018-10-24 16:15:06,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157971 states to 157971 states and 162688 transitions. [2018-10-24 16:15:06,592 INFO L78 Accepts]: Start accepts. Automaton has 157971 states and 162688 transitions. Word has length 558 [2018-10-24 16:15:06,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:15:06,593 INFO L481 AbstractCegarLoop]: Abstraction has 157971 states and 162688 transitions. [2018-10-24 16:15:06,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:15:06,593 INFO L276 IsEmpty]: Start isEmpty. Operand 157971 states and 162688 transitions. [2018-10-24 16:15:06,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2018-10-24 16:15:06,616 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:15:06,617 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:15:06,617 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:15:06,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:15:06,617 INFO L82 PathProgramCache]: Analyzing trace with hash -982508664, now seen corresponding path program 1 times [2018-10-24 16:15:06,618 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:15:06,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:15:06,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:06,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:15:06,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:15:08,288 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 571 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2018-10-24 16:15:08,288 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:15:08,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:15:08,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:15:08,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:15:08,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:15:08,290 INFO L87 Difference]: Start difference. First operand 157971 states and 162688 transitions. Second operand 3 states. [2018-10-24 16:15:14,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:15:14,445 INFO L93 Difference]: Finished difference Result 330980 states and 341166 transitions. [2018-10-24 16:15:14,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:15:14,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 703 [2018-10-24 16:15:14,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:15:14,601 INFO L225 Difference]: With dead ends: 330980 [2018-10-24 16:15:14,601 INFO L226 Difference]: Without dead ends: 173763 [2018-10-24 16:15:14,661 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:15:14,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173763 states. [2018-10-24 16:15:17,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173763 to 167747. [2018-10-24 16:15:17,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167747 states. [2018-10-24 16:15:17,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167747 states to 167747 states and 172664 transitions. [2018-10-24 16:15:17,505 INFO L78 Accepts]: Start accepts. Automaton has 167747 states and 172664 transitions. Word has length 703 [2018-10-24 16:15:17,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:15:17,506 INFO L481 AbstractCegarLoop]: Abstraction has 167747 states and 172664 transitions. [2018-10-24 16:15:17,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:15:17,506 INFO L276 IsEmpty]: Start isEmpty. Operand 167747 states and 172664 transitions. [2018-10-24 16:15:17,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 917 [2018-10-24 16:15:17,549 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:15:17,550 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:15:17,550 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:15:17,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:15:17,551 INFO L82 PathProgramCache]: Analyzing trace with hash 708687686, now seen corresponding path program 1 times [2018-10-24 16:15:17,551 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:15:17,551 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:15:17,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:17,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:15:17,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:15:22,033 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2018-10-24 16:15:22,034 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:15:22,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:15:22,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:15:22,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:15:22,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:15:22,038 INFO L87 Difference]: Start difference. First operand 167747 states and 172664 transitions. Second operand 4 states. [2018-10-24 16:15:34,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:15:34,874 INFO L93 Difference]: Finished difference Result 322688 states and 332441 transitions. [2018-10-24 16:15:34,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:15:34,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 916 [2018-10-24 16:15:34,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:15:35,020 INFO L225 Difference]: With dead ends: 322688 [2018-10-24 16:15:35,020 INFO L226 Difference]: Without dead ends: 155695 [2018-10-24 16:15:35,075 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 [2018-10-24 16:15:35,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155695 states. [2018-10-24 16:15:36,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155695 to 147423. [2018-10-24 16:15:36,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147423 states. [2018-10-24 16:15:36,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147423 states to 147423 states and 150767 transitions. [2018-10-24 16:15:36,749 INFO L78 Accepts]: Start accepts. Automaton has 147423 states and 150767 transitions. Word has length 916 [2018-10-24 16:15:36,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:15:36,749 INFO L481 AbstractCegarLoop]: Abstraction has 147423 states and 150767 transitions. [2018-10-24 16:15:36,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:15:36,749 INFO L276 IsEmpty]: Start isEmpty. Operand 147423 states and 150767 transitions. [2018-10-24 16:15:36,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1446 [2018-10-24 16:15:36,858 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:15:36,859 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:15:36,859 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:15:36,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:15:36,860 INFO L82 PathProgramCache]: Analyzing trace with hash -170690272, now seen corresponding path program 1 times [2018-10-24 16:15:36,860 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:15:36,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:15:36,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:36,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:15:36,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:15:39,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1720 backedges. 917 proven. 0 refuted. 0 times theorem prover too weak. 803 trivial. 0 not checked. [2018-10-24 16:15:39,908 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:15:39,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:15:39,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:15:39,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:15:39,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:15:39,909 INFO L87 Difference]: Start difference. First operand 147423 states and 150767 transitions. Second operand 5 states. [2018-10-24 16:15:52,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:15:52,508 INFO L93 Difference]: Finished difference Result 355007 states and 363153 transitions. [2018-10-24 16:15:52,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:15:52,510 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1445 [2018-10-24 16:15:52,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:15:52,739 INFO L225 Difference]: With dead ends: 355007 [2018-10-24 16:15:52,739 INFO L226 Difference]: Without dead ends: 207586 [2018-10-24 16:15:52,812 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:15:52,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207586 states. [2018-10-24 16:15:54,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207586 to 162466. [2018-10-24 16:15:54,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162466 states. [2018-10-24 16:15:54,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162466 states to 162466 states and 166108 transitions. [2018-10-24 16:15:54,968 INFO L78 Accepts]: Start accepts. Automaton has 162466 states and 166108 transitions. Word has length 1445 [2018-10-24 16:15:54,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:15:54,969 INFO L481 AbstractCegarLoop]: Abstraction has 162466 states and 166108 transitions. [2018-10-24 16:15:54,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:15:54,969 INFO L276 IsEmpty]: Start isEmpty. Operand 162466 states and 166108 transitions. [2018-10-24 16:15:55,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1484 [2018-10-24 16:15:55,080 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:15:55,081 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:15:55,081 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:15:55,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:15:55,082 INFO L82 PathProgramCache]: Analyzing trace with hash 496865041, now seen corresponding path program 1 times [2018-10-24 16:15:55,082 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:15:55,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:15:55,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:55,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:15:55,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:15:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-24 16:15:58,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 640 proven. 501 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-10-24 16:15:58,988 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:15:58,988 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 [2018-10-24 16:15:58,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:15:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:15:59,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:15:59,399 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 16:15:59,600 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:15:59,600 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:15:59,606 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:15:59,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:15:59 BoogieIcfgContainer [2018-10-24 16:15:59,606 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:15:59,607 INFO L168 Benchmark]: Toolchain (without parser) took 233780.96 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -896.8 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 16:15:59,612 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:15:59,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2107.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-24 16:15:59,614 INFO L168 Benchmark]: Boogie Procedure Inliner took 619.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 788.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -980.6 MB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB. [2018-10-24 16:15:59,615 INFO L168 Benchmark]: Boogie Preprocessor took 328.64 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 48.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:15:59,616 INFO L168 Benchmark]: RCFGBuilder took 8489.45 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 231.2 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -190.2 MB). Peak memory consumption was 639.8 MB. Max. memory is 7.1 GB. [2018-10-24 16:15:59,617 INFO L168 Benchmark]: TraceAbstraction took 222231.71 ms. Allocated memory was 2.5 GB in the beginning and 4.5 GB in the end (delta: 1.9 GB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 24.9 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 16:15:59,624 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2107.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 619.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 788.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -980.6 MB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 328.64 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 48.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8489.45 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 231.2 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -190.2 MB). Peak memory consumption was 639.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222231.71 ms. Allocated memory was 2.5 GB in the beginning and 4.5 GB in the end (delta: 1.9 GB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 24.9 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 132). Cancelled while BasicCegarLoop was analyzing trace of length 1484 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 5 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 222.1s OverallTime, 16 OverallIterations, 6 TraceHistogramMax, 183.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6920 SDtfs, 38752 SDslu, 1371 SDs, 0 SdLazy, 76713 SolverSat, 18121 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 148.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 803 GetRequests, 735 SyntacticMatches, 20 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=167747occurred in iteration=13, 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: 16.3s AutomataMinimizationTime, 15 MinimizatonAttempts, 149487 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 7.5s InterpolantComputationTime, 8043 NumberOfCodeBlocks, 8043 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 8025 ConstructedInterpolants, 0 QuantifiedInterpolants, 12500044 SizeOfPredicates, 6 NumberOfNonLiveVariables, 985 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 18 InterpolantComputations, 15 PerfectInterpolantSequences, 8669/8682 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown