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/Problem19_label51_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:46:50,665 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:46:50,669 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:46:50,688 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:46:50,688 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:46:50,689 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:46:50,691 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:46:50,694 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:46:50,697 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:46:50,697 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:46:50,700 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:46:50,700 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:46:50,703 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:46:50,704 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:46:50,705 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:46:50,712 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:46:50,713 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:46:50,717 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:46:50,718 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:46:50,722 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:46:50,725 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:46:50,726 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:46:50,729 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 14:46:50,744 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 14:46:50,772 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:46:50,772 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:46:50,773 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:46:50,773 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:46:50,776 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:46:50,776 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:46:50,776 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:46:50,778 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:46:50,778 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:46:50,778 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:46:50,778 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:46:50,779 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:46:50,779 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:46:50,779 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:46:50,779 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:46:50,779 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:46:50,781 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:46:50,781 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:46:50,781 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:46:50,781 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:46:50,782 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:46:50,782 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:46:50,782 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:46:50,782 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:46:50,783 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:46:50,783 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:46:50,783 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:46:50,783 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:46:50,855 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:46:50,871 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:46:50,874 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:46:50,876 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:46:50,876 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:46:50,877 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label51_false-unreach-call.c [2018-10-24 14:46:50,941 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/356cbee4b/c7b66ee0852d439cb1edb9f00a8fb341/FLAGf423aeb0a [2018-10-24 14:46:51,853 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:46:51,854 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label51_false-unreach-call.c [2018-10-24 14:46:51,900 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/356cbee4b/c7b66ee0852d439cb1edb9f00a8fb341/FLAGf423aeb0a [2018-10-24 14:46:51,917 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/356cbee4b/c7b66ee0852d439cb1edb9f00a8fb341 [2018-10-24 14:46:51,930 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:46:51,931 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:46:51,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:46:51,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:46:51,937 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:46:51,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:46:51" (1/1) ... [2018-10-24 14:46:51,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441f49ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:51, skipping insertion in model container [2018-10-24 14:46:51,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:46:51" (1/1) ... [2018-10-24 14:46:51,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:46:52,205 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:46:54,103 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:46:54,108 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:46:55,135 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:46:55,202 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:46:55,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:55 WrapperNode [2018-10-24 14:46:55,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:46:55,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:46:55,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:46:55,206 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:46:55,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:55" (1/1) ... [2018-10-24 14:46:55,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:55" (1/1) ... [2018-10-24 14:46:56,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:46:56,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:46:56,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:46:56,337 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:46:56,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:55" (1/1) ... [2018-10-24 14:46:56,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:55" (1/1) ... [2018-10-24 14:46:56,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:55" (1/1) ... [2018-10-24 14:46:56,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:55" (1/1) ... [2018-10-24 14:46:56,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:55" (1/1) ... [2018-10-24 14:46:56,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:55" (1/1) ... [2018-10-24 14:46:56,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:55" (1/1) ... [2018-10-24 14:46:57,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:46:57,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:46:57,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:46:57,131 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:46:57,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:55" (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 14:46:57,203 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:46:57,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:46:57,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:47:14,620 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:47:14,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:47:14 BoogieIcfgContainer [2018-10-24 14:47:14,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:47:14,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:47:14,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:47:14,628 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:47:14,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:46:51" (1/3) ... [2018-10-24 14:47:14,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58339dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:47:14, skipping insertion in model container [2018-10-24 14:47:14,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:55" (2/3) ... [2018-10-24 14:47:14,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58339dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:47:14, skipping insertion in model container [2018-10-24 14:47:14,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:47:14" (3/3) ... [2018-10-24 14:47:14,633 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label51_false-unreach-call.c [2018-10-24 14:47:14,644 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:47:14,660 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:47:14,678 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:47:14,739 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:47:14,739 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:47:14,740 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:47:14,740 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:47:14,740 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:47:14,740 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:47:14,740 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:47:14,740 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:47:14,741 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:47:14,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 14:47:14,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-24 14:47:14,805 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:47:14,806 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:47:14,809 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:47:14,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:47:14,816 INFO L82 PathProgramCache]: Analyzing trace with hash 670581594, now seen corresponding path program 1 times [2018-10-24 14:47:14,818 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:47:14,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:47:14,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:47:14,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:47:14,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:47:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:47:15,167 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 14:47:15,170 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:47:15,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:47:15,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:47:15,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:47:15,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:47:15,198 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-24 14:47:42,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:47:42,972 INFO L93 Difference]: Finished difference Result 6322 states and 12078 transitions. [2018-10-24 14:47:42,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:47:42,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-10-24 14:47:42,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:47:43,031 INFO L225 Difference]: With dead ends: 6322 [2018-10-24 14:47:43,032 INFO L226 Difference]: Without dead ends: 4566 [2018-10-24 14:47:43,043 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:47:43,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4566 states. [2018-10-24 14:47:43,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4566 to 4562. [2018-10-24 14:47:43,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4562 states. [2018-10-24 14:47:43,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4562 states to 4562 states and 7763 transitions. [2018-10-24 14:47:43,252 INFO L78 Accepts]: Start accepts. Automaton has 4562 states and 7763 transitions. Word has length 18 [2018-10-24 14:47:43,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:47:43,253 INFO L481 AbstractCegarLoop]: Abstraction has 4562 states and 7763 transitions. [2018-10-24 14:47:43,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:47:43,253 INFO L276 IsEmpty]: Start isEmpty. Operand 4562 states and 7763 transitions. [2018-10-24 14:47:43,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-24 14:47:43,256 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:47:43,257 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:47:43,257 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:47:43,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:47:43,257 INFO L82 PathProgramCache]: Analyzing trace with hash 586332882, now seen corresponding path program 1 times [2018-10-24 14:47:43,258 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:47:43,258 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:47:43,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:47:43,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:47:43,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:47:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:47:43,798 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:47:43,798 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:47:43,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:47:43,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:47:43,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:47:43,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:47:43,802 INFO L87 Difference]: Start difference. First operand 4562 states and 7763 transitions. Second operand 4 states. [2018-10-24 14:48:15,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:48:15,225 INFO L93 Difference]: Finished difference Result 17536 states and 30099 transitions. [2018-10-24 14:48:15,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:48:15,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2018-10-24 14:48:15,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:48:15,294 INFO L225 Difference]: With dead ends: 17536 [2018-10-24 14:48:15,294 INFO L226 Difference]: Without dead ends: 12976 [2018-10-24 14:48:15,303 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:48:15,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12976 states. [2018-10-24 14:48:15,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12976 to 8660. [2018-10-24 14:48:15,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8660 states. [2018-10-24 14:48:15,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8660 states to 8660 states and 14380 transitions. [2018-10-24 14:48:15,526 INFO L78 Accepts]: Start accepts. Automaton has 8660 states and 14380 transitions. Word has length 88 [2018-10-24 14:48:15,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:48:15,527 INFO L481 AbstractCegarLoop]: Abstraction has 8660 states and 14380 transitions. [2018-10-24 14:48:15,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:48:15,527 INFO L276 IsEmpty]: Start isEmpty. Operand 8660 states and 14380 transitions. [2018-10-24 14:48:15,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-24 14:48:15,534 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:48:15,535 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:48:15,535 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:48:15,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:48:15,535 INFO L82 PathProgramCache]: Analyzing trace with hash 872305381, now seen corresponding path program 1 times [2018-10-24 14:48:15,535 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:48:15,536 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:48:15,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:48:15,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:48:15,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:48:15,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:48:15,840 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 14:48:15,874 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:48:15,874 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:48:15,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:48:15,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:48:15,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:48:15,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:48:15,876 INFO L87 Difference]: Start difference. First operand 8660 states and 14380 transitions. Second operand 4 states. [2018-10-24 14:48:34,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:48:34,834 INFO L93 Difference]: Finished difference Result 33813 states and 56473 transitions. [2018-10-24 14:48:34,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:48:34,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2018-10-24 14:48:34,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:48:34,908 INFO L225 Difference]: With dead ends: 33813 [2018-10-24 14:48:34,908 INFO L226 Difference]: Without dead ends: 25155 [2018-10-24 14:48:34,920 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:48:34,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25155 states. [2018-10-24 14:48:35,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25155 to 16865. [2018-10-24 14:48:35,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16865 states. [2018-10-24 14:48:35,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16865 states to 16865 states and 24314 transitions. [2018-10-24 14:48:35,274 INFO L78 Accepts]: Start accepts. Automaton has 16865 states and 24314 transitions. Word has length 110 [2018-10-24 14:48:35,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:48:35,275 INFO L481 AbstractCegarLoop]: Abstraction has 16865 states and 24314 transitions. [2018-10-24 14:48:35,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:48:35,275 INFO L276 IsEmpty]: Start isEmpty. Operand 16865 states and 24314 transitions. [2018-10-24 14:48:35,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-24 14:48:35,277 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:48:35,284 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:48:35,285 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:48:35,285 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:48:35,285 INFO L82 PathProgramCache]: Analyzing trace with hash -453547303, now seen corresponding path program 1 times [2018-10-24 14:48:35,286 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:48:35,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:48:35,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:48:35,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:48:35,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:48:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:48:35,608 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:48:35,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:48:35,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:48:35,609 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:48:35,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:48:35,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:48:35,610 INFO L87 Difference]: Start difference. First operand 16865 states and 24314 transitions. Second operand 4 states. [2018-10-24 14:48:57,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:48:57,340 INFO L93 Difference]: Finished difference Result 65426 states and 94868 transitions. [2018-10-24 14:48:57,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:48:57,341 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2018-10-24 14:48:57,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:48:57,455 INFO L225 Difference]: With dead ends: 65426 [2018-10-24 14:48:57,455 INFO L226 Difference]: Without dead ends: 48563 [2018-10-24 14:48:57,478 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:48:57,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48563 states. [2018-10-24 14:48:58,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48563 to 48550. [2018-10-24 14:48:58,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48550 states. [2018-10-24 14:48:58,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48550 states to 48550 states and 63472 transitions. [2018-10-24 14:48:58,142 INFO L78 Accepts]: Start accepts. Automaton has 48550 states and 63472 transitions. Word has length 119 [2018-10-24 14:48:58,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:48:58,144 INFO L481 AbstractCegarLoop]: Abstraction has 48550 states and 63472 transitions. [2018-10-24 14:48:58,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:48:58,144 INFO L276 IsEmpty]: Start isEmpty. Operand 48550 states and 63472 transitions. [2018-10-24 14:48:58,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-24 14:48:58,151 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:48:58,151 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:58,152 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:48:58,155 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:48:58,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1820684780, now seen corresponding path program 1 times [2018-10-24 14:48:58,156 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:48:58,156 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:48:58,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:48:58,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:48:58,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:48:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:48:58,542 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-24 14:48:58,543 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:48:58,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:48:58,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:48:58,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:48:58,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:48:58,544 INFO L87 Difference]: Start difference. First operand 48550 states and 63472 transitions. Second operand 4 states. [2018-10-24 14:49:15,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:49:15,573 INFO L93 Difference]: Finished difference Result 112127 states and 144774 transitions. [2018-10-24 14:49:15,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:49:15,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 181 [2018-10-24 14:49:15,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:49:15,659 INFO L225 Difference]: With dead ends: 112127 [2018-10-24 14:49:15,659 INFO L226 Difference]: Without dead ends: 63579 [2018-10-24 14:49:15,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:49:15,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63579 states. [2018-10-24 14:49:16,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63579 to 63570. [2018-10-24 14:49:16,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63570 states. [2018-10-24 14:49:16,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63570 states to 63570 states and 77358 transitions. [2018-10-24 14:49:16,452 INFO L78 Accepts]: Start accepts. Automaton has 63570 states and 77358 transitions. Word has length 181 [2018-10-24 14:49:16,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:49:16,452 INFO L481 AbstractCegarLoop]: Abstraction has 63570 states and 77358 transitions. [2018-10-24 14:49:16,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:49:16,453 INFO L276 IsEmpty]: Start isEmpty. Operand 63570 states and 77358 transitions. [2018-10-24 14:49:16,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2018-10-24 14:49:16,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:49:16,477 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:16,477 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:49:16,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:49:16,480 INFO L82 PathProgramCache]: Analyzing trace with hash -830257455, now seen corresponding path program 1 times [2018-10-24 14:49:16,480 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:49:16,480 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:49:16,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:49:16,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:49:16,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:49:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:49:17,632 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-24 14:49:18,204 WARN L179 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 21 [2018-10-24 14:49:18,654 WARN L179 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 26 [2018-10-24 14:49:20,172 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-10-24 14:49:20,173 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:49:20,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 14:49:20,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 14:49:20,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 14:49:20,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-24 14:49:20,175 INFO L87 Difference]: Start difference. First operand 63570 states and 77358 transitions. Second operand 8 states. [2018-10-24 14:49:44,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:49:44,098 INFO L93 Difference]: Finished difference Result 174483 states and 212363 transitions. [2018-10-24 14:49:44,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-24 14:49:44,098 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 754 [2018-10-24 14:49:44,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:49:44,245 INFO L225 Difference]: With dead ends: 174483 [2018-10-24 14:49:44,245 INFO L226 Difference]: Without dead ends: 110915 [2018-10-24 14:49:44,300 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2018-10-24 14:49:44,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110915 states. [2018-10-24 14:49:45,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110915 to 64936. [2018-10-24 14:49:45,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64936 states. [2018-10-24 14:49:45,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64936 states to 64936 states and 78730 transitions. [2018-10-24 14:49:45,775 INFO L78 Accepts]: Start accepts. Automaton has 64936 states and 78730 transitions. Word has length 754 [2018-10-24 14:49:45,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:49:45,776 INFO L481 AbstractCegarLoop]: Abstraction has 64936 states and 78730 transitions. [2018-10-24 14:49:45,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 14:49:45,777 INFO L276 IsEmpty]: Start isEmpty. Operand 64936 states and 78730 transitions. [2018-10-24 14:49:45,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 874 [2018-10-24 14:49:45,816 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:49:45,817 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:49:45,818 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:49:45,818 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:49:45,818 INFO L82 PathProgramCache]: Analyzing trace with hash -447355457, now seen corresponding path program 1 times [2018-10-24 14:49:45,819 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:49:45,819 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:49:45,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:49:45,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:49:45,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:49:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:49:47,257 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 415 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2018-10-24 14:49:47,258 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:49:47,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 14:49:47,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:49:47,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:49:47,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:49:47,261 INFO L87 Difference]: Start difference. First operand 64936 states and 78730 transitions. Second operand 5 states. [2018-10-24 14:50:19,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:50:19,042 INFO L93 Difference]: Finished difference Result 229770 states and 282817 transitions. [2018-10-24 14:50:19,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:50:19,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 873 [2018-10-24 14:50:19,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:50:19,268 INFO L225 Difference]: With dead ends: 229770 [2018-10-24 14:50:19,268 INFO L226 Difference]: Without dead ends: 166202 [2018-10-24 14:50:19,334 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 14:50:19,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166202 states. [2018-10-24 14:50:21,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166202 to 127786. [2018-10-24 14:50:21,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127786 states. [2018-10-24 14:50:21,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127786 states to 127786 states and 154598 transitions. [2018-10-24 14:50:21,177 INFO L78 Accepts]: Start accepts. Automaton has 127786 states and 154598 transitions. Word has length 873 [2018-10-24 14:50:21,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:50:21,179 INFO L481 AbstractCegarLoop]: Abstraction has 127786 states and 154598 transitions. [2018-10-24 14:50:21,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:50:21,179 INFO L276 IsEmpty]: Start isEmpty. Operand 127786 states and 154598 transitions. [2018-10-24 14:50:21,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2018-10-24 14:50:21,204 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:50:21,205 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:50:21,206 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:50:21,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:50:21,206 INFO L82 PathProgramCache]: Analyzing trace with hash 2138505184, now seen corresponding path program 1 times [2018-10-24 14:50:21,206 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:50:21,207 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:50:21,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:50:21,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:50:21,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:50:21,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:50:21,936 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 14:50:22,377 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 281 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-24 14:50:22,377 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:50:22,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:50:22,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:50:22,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:50:22,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:50:22,379 INFO L87 Difference]: Start difference. First operand 127786 states and 154598 transitions. Second operand 4 states. [2018-10-24 14:50:41,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:50:41,034 INFO L93 Difference]: Finished difference Result 255563 states and 309578 transitions. [2018-10-24 14:50:41,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:50:41,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 931 [2018-10-24 14:50:41,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:50:41,192 INFO L225 Difference]: With dead ends: 255563 [2018-10-24 14:50:41,193 INFO L226 Difference]: Without dead ends: 129145 [2018-10-24 14:50:41,267 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 14:50:41,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129145 states. [2018-10-24 14:50:43,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129145 to 126406. [2018-10-24 14:50:43,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126406 states. [2018-10-24 14:50:43,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126406 states to 126406 states and 145111 transitions. [2018-10-24 14:50:43,142 INFO L78 Accepts]: Start accepts. Automaton has 126406 states and 145111 transitions. Word has length 931 [2018-10-24 14:50:43,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:50:43,144 INFO L481 AbstractCegarLoop]: Abstraction has 126406 states and 145111 transitions. [2018-10-24 14:50:43,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:50:43,144 INFO L276 IsEmpty]: Start isEmpty. Operand 126406 states and 145111 transitions. [2018-10-24 14:50:43,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2018-10-24 14:50:43,159 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:50:43,160 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:50:43,160 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:50:43,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:50:43,161 INFO L82 PathProgramCache]: Analyzing trace with hash -447044229, now seen corresponding path program 1 times [2018-10-24 14:50:43,161 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:50:43,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:50:43,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:50:43,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:50:43,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:50:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:50:44,206 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2018-10-24 14:50:44,207 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:50:44,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:50:44,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:50:44,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:50:44,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:50:44,208 INFO L87 Difference]: Start difference. First operand 126406 states and 145111 transitions. Second operand 3 states. Received shutdown request... [2018-10-24 14:50:50,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:50:50,786 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:50:50,791 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:50:50,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:50:50 BoogieIcfgContainer [2018-10-24 14:50:50,792 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:50:50,793 INFO L168 Benchmark]: Toolchain (without parser) took 238862.46 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-24 14:50:50,794 INFO L168 Benchmark]: CDTParser took 0.21 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 14:50:50,794 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3270.79 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 986.2 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:50:50,795 INFO L168 Benchmark]: Boogie Procedure Inliner took 1132.97 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 839.4 MB). Free memory was 986.2 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. [2018-10-24 14:50:50,796 INFO L168 Benchmark]: Boogie Preprocessor took 793.31 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 100.9 MB). Peak memory consumption was 100.9 MB. Max. memory is 7.1 GB. [2018-10-24 14:50:50,797 INFO L168 Benchmark]: RCFGBuilder took 17491.15 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 276.8 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -383.7 MB). Peak memory consumption was 881.6 MB. Max. memory is 7.1 GB. [2018-10-24 14:50:50,798 INFO L168 Benchmark]: TraceAbstraction took 216169.43 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.2 GB). Free memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: -89.4 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 14:50:50,804 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3270.79 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 986.2 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1132.97 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 839.4 MB). Free memory was 986.2 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 793.31 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 100.9 MB). Peak memory consumption was 100.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17491.15 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 276.8 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -383.7 MB). Peak memory consumption was 881.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216169.43 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.2 GB). Free memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: -89.4 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 67). Cancelled while BasicCegarLoop was constructing difference of abstraction (126406states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (68359 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 216.0s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 199.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 13570 SDtfs, 39184 SDslu, 8892 SDs, 0 SdLazy, 72678 SolverSat, 20156 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 171.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 12 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127786occurred in iteration=7, 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: 7.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 99766 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 4031 NumberOfCodeBlocks, 4031 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 4022 ConstructedInterpolants, 0 QuantifiedInterpolants, 9196229 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 2348/2348 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown