java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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-df4b876 [2018-11-06 21:09:01,531 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:09:01,533 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:09:01,550 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:09:01,550 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:09:01,552 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:09:01,553 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:09:01,556 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:09:01,558 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:09:01,560 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:09:01,561 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:09:01,561 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:09:01,563 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:09:01,567 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:09:01,568 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:09:01,569 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:09:01,577 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:09:01,579 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:09:01,583 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:09:01,585 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:09:01,588 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:09:01,590 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:09:01,594 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 21:09:01,594 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 21:09:01,594 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 21:09:01,595 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 21:09:01,596 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 21:09:01,597 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 21:09:01,599 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 21:09:01,601 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 21:09:01,601 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 21:09:01,602 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 21:09:01,606 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 21:09:01,633 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:09:01,634 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:09:01,635 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:09:01,635 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:09:01,635 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:09:01,636 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:09:01,636 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:09:01,636 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:09:01,636 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:09:01,636 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:09:01,638 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:09:01,638 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:09:01,638 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:09:01,638 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:09:01,638 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:09:01,639 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:09:01,639 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:09:01,639 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:09:01,639 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:09:01,639 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:09:01,641 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:09:01,641 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:09:01,642 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:09:01,642 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:09:01,642 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:09:01,642 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:09:01,643 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:09:01,643 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:09:01,711 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:09:01,727 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:09:01,732 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:09:01,734 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:09:01,735 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:09:01,735 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label17_true-unreach-call.c [2018-11-06 21:09:01,811 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/523eee684/16e1792d63ac4db78b76b74ca6cdb177/FLAG98ca20da7 [2018-11-06 21:09:02,572 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:09:02,574 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label17_true-unreach-call.c [2018-11-06 21:09:02,614 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/523eee684/16e1792d63ac4db78b76b74ca6cdb177/FLAG98ca20da7 [2018-11-06 21:09:02,635 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/523eee684/16e1792d63ac4db78b76b74ca6cdb177 [2018-11-06 21:09:02,649 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:09:02,651 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:09:02,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:09:02,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:09:02,658 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:09:02,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:09:02" (1/1) ... [2018-11-06 21:09:02,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24e22a82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:09:02, skipping insertion in model container [2018-11-06 21:09:02,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:09:02" (1/1) ... [2018-11-06 21:09:02,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:09:02,854 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:09:04,150 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:09:04,155 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:09:04,793 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:09:04,826 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:09:04,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:09:04 WrapperNode [2018-11-06 21:09:04,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:09:04,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:09:04,828 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:09:04,828 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:09:04,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:09:04" (1/1) ... [2018-11-06 21:09:05,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:09:04" (1/1) ... [2018-11-06 21:09:05,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:09:05,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:09:05,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:09:05,453 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:09:05,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:09:04" (1/1) ... [2018-11-06 21:09:05,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:09:04" (1/1) ... [2018-11-06 21:09:05,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:09:04" (1/1) ... [2018-11-06 21:09:05,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:09:04" (1/1) ... [2018-11-06 21:09:05,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:09:04" (1/1) ... [2018-11-06 21:09:05,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:09:04" (1/1) ... [2018-11-06 21:09:05,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:09:04" (1/1) ... [2018-11-06 21:09:05,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:09:05,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:09:05,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:09:05,936 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:09:05,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:09:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:09:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:09:06,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:09:06,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:09:14,927 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:09:14,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:09:14 BoogieIcfgContainer [2018-11-06 21:09:14,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:09:14,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:09:14,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:09:14,932 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:09:14,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:09:02" (1/3) ... [2018-11-06 21:09:14,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b7715f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:09:14, skipping insertion in model container [2018-11-06 21:09:14,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:09:04" (2/3) ... [2018-11-06 21:09:14,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b7715f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:09:14, skipping insertion in model container [2018-11-06 21:09:14,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:09:14" (3/3) ... [2018-11-06 21:09:14,936 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label17_true-unreach-call.c [2018-11-06 21:09:14,946 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:09:14,956 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:09:14,973 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:09:15,028 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:09:15,029 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:09:15,029 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:09:15,029 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:09:15,029 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:09:15,029 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:09:15,029 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:09:15,029 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:09:15,030 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:09:15,069 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-11-06 21:09:15,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-06 21:09:15,078 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:09:15,079 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] [2018-11-06 21:09:15,081 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:09:15,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:09:15,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1074275470, now seen corresponding path program 1 times [2018-11-06 21:09:15,089 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:09:15,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:09:15,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:09:15,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:09:15,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:09:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:09:15,581 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-06 21:09:15,774 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-11-06 21:09:16,033 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 16 [2018-11-06 21:09:16,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:09:16,243 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:09:16,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 21:09:16,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 21:09:16,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 21:09:16,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:09:16,267 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 7 states. [2018-11-06 21:09:35,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:09:35,749 INFO L93 Difference]: Finished difference Result 5413 states and 10642 transitions. [2018-11-06 21:09:35,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 21:09:35,752 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2018-11-06 21:09:35,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:09:35,806 INFO L225 Difference]: With dead ends: 5413 [2018-11-06 21:09:35,807 INFO L226 Difference]: Without dead ends: 4578 [2018-11-06 21:09:35,815 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-11-06 21:09:35,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4578 states. [2018-11-06 21:09:36,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4578 to 3072. [2018-11-06 21:09:36,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3072 states. [2018-11-06 21:09:36,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4384 transitions. [2018-11-06 21:09:36,028 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4384 transitions. Word has length 41 [2018-11-06 21:09:36,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:09:36,029 INFO L480 AbstractCegarLoop]: Abstraction has 3072 states and 4384 transitions. [2018-11-06 21:09:36,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 21:09:36,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4384 transitions. [2018-11-06 21:09:36,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-11-06 21:09:36,039 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:09:36,039 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] [2018-11-06 21:09:36,040 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:09:36,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:09:36,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1425155533, now seen corresponding path program 1 times [2018-11-06 21:09:36,040 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:09:36,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:09:36,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:09:36,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:09:36,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:09:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:09:36,584 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 137 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-06 21:09:36,584 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:09:36,584 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:09:36,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:09:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:09:36,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:09:36,882 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-06 21:09:36,913 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:09:36,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-11-06 21:09:36,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 21:09:36,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 21:09:36,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:09:36,918 INFO L87 Difference]: Start difference. First operand 3072 states and 4384 transitions. Second operand 6 states. [2018-11-06 21:09:38,192 WARN L179 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2018-11-06 21:09:56,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:09:56,687 INFO L93 Difference]: Finished difference Result 15950 states and 24157 transitions. [2018-11-06 21:09:56,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-06 21:09:56,688 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2018-11-06 21:09:56,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:09:56,738 INFO L225 Difference]: With dead ends: 15950 [2018-11-06 21:09:56,738 INFO L226 Difference]: Without dead ends: 10621 [2018-11-06 21:09:56,748 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:09:56,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10621 states. [2018-11-06 21:09:56,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10621 to 4575. [2018-11-06 21:09:56,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4575 states. [2018-11-06 21:09:56,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4575 states to 4575 states and 5823 transitions. [2018-11-06 21:09:56,885 INFO L78 Accepts]: Start accepts. Automaton has 4575 states and 5823 transitions. Word has length 183 [2018-11-06 21:09:56,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:09:56,886 INFO L480 AbstractCegarLoop]: Abstraction has 4575 states and 5823 transitions. [2018-11-06 21:09:56,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 21:09:56,886 INFO L276 IsEmpty]: Start isEmpty. Operand 4575 states and 5823 transitions. [2018-11-06 21:09:56,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-11-06 21:09:56,892 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:09:56,892 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] [2018-11-06 21:09:56,893 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:09:56,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:09:56,893 INFO L82 PathProgramCache]: Analyzing trace with hash -563431620, now seen corresponding path program 1 times [2018-11-06 21:09:56,893 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:09:56,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:09:56,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:09:56,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:09:56,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:09:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:09:57,316 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-06 21:09:57,795 WARN L179 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2018-11-06 21:09:58,031 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 128 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-06 21:09:58,032 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:09:58,032 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:09:58,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:09:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:09:58,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:09:58,261 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-06 21:09:58,282 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:09:58,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2018-11-06 21:09:58,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 21:09:58,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 21:09:58,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:09:58,284 INFO L87 Difference]: Start difference. First operand 4575 states and 5823 transitions. Second operand 7 states. [2018-11-06 21:10:09,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:10:09,199 INFO L93 Difference]: Finished difference Result 17421 states and 22220 transitions. [2018-11-06 21:10:09,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 21:10:09,199 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 253 [2018-11-06 21:10:09,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:10:09,249 INFO L225 Difference]: With dead ends: 17421 [2018-11-06 21:10:09,250 INFO L226 Difference]: Without dead ends: 12848 [2018-11-06 21:10:09,259 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 253 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-11-06 21:10:09,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12848 states. [2018-11-06 21:10:09,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12848 to 11343. [2018-11-06 21:10:09,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11343 states. [2018-11-06 21:10:09,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11343 states to 11343 states and 13234 transitions. [2018-11-06 21:10:09,508 INFO L78 Accepts]: Start accepts. Automaton has 11343 states and 13234 transitions. Word has length 253 [2018-11-06 21:10:09,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:10:09,509 INFO L480 AbstractCegarLoop]: Abstraction has 11343 states and 13234 transitions. [2018-11-06 21:10:09,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 21:10:09,509 INFO L276 IsEmpty]: Start isEmpty. Operand 11343 states and 13234 transitions. [2018-11-06 21:10:09,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-11-06 21:10:09,514 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:10:09,514 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] [2018-11-06 21:10:09,515 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:10:09,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:10:09,515 INFO L82 PathProgramCache]: Analyzing trace with hash -365464936, now seen corresponding path program 1 times [2018-11-06 21:10:09,515 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:10:09,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:10:09,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:10:09,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:10:09,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:10:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:10:10,036 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 77 proven. 4 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-11-06 21:10:10,037 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:10:10,037 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:10:10,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:10:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:10:10,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:10:10,171 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:10:10,191 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:10:10,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 21:10:10,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:10:10,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:10:10,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:10:10,193 INFO L87 Difference]: Start difference. First operand 11343 states and 13234 transitions. Second operand 4 states. [2018-11-06 21:10:16,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:10:16,552 INFO L93 Difference]: Finished difference Result 38537 states and 45823 transitions. [2018-11-06 21:10:16,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:10:16,559 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 274 [2018-11-06 21:10:16,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:10:16,624 INFO L225 Difference]: With dead ends: 38537 [2018-11-06 21:10:16,624 INFO L226 Difference]: Without dead ends: 27196 [2018-11-06 21:10:16,642 INFO L604 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 [2018-11-06 21:10:16,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27196 states. [2018-11-06 21:10:16,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27196 to 15855. [2018-11-06 21:10:16,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15855 states. [2018-11-06 21:10:16,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15855 states to 15855 states and 18576 transitions. [2018-11-06 21:10:16,949 INFO L78 Accepts]: Start accepts. Automaton has 15855 states and 18576 transitions. Word has length 274 [2018-11-06 21:10:16,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:10:16,950 INFO L480 AbstractCegarLoop]: Abstraction has 15855 states and 18576 transitions. [2018-11-06 21:10:16,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:10:16,950 INFO L276 IsEmpty]: Start isEmpty. Operand 15855 states and 18576 transitions. [2018-11-06 21:10:16,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-11-06 21:10:16,955 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:10:16,956 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] [2018-11-06 21:10:16,956 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:10:16,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:10:16,957 INFO L82 PathProgramCache]: Analyzing trace with hash 402036965, now seen corresponding path program 1 times [2018-11-06 21:10:16,957 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:10:16,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:10:16,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:10:16,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:10:16,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:10:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:10:17,449 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:10:17,449 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:10:17,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:10:17,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:10:17,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:10:17,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:10:17,451 INFO L87 Difference]: Start difference. First operand 15855 states and 18576 transitions. Second operand 4 states. [2018-11-06 21:10:24,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:10:24,927 INFO L93 Difference]: Finished difference Result 57276 states and 67801 transitions. [2018-11-06 21:10:24,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:10:24,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 295 [2018-11-06 21:10:24,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:10:24,993 INFO L225 Difference]: With dead ends: 57276 [2018-11-06 21:10:24,994 INFO L226 Difference]: Without dead ends: 41423 [2018-11-06 21:10:25,022 INFO L604 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 [2018-11-06 21:10:25,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41423 states. [2018-11-06 21:10:25,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41423 to 41423. [2018-11-06 21:10:25,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41423 states. [2018-11-06 21:10:25,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41423 states to 41423 states and 47908 transitions. [2018-11-06 21:10:25,614 INFO L78 Accepts]: Start accepts. Automaton has 41423 states and 47908 transitions. Word has length 295 [2018-11-06 21:10:25,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:10:25,614 INFO L480 AbstractCegarLoop]: Abstraction has 41423 states and 47908 transitions. [2018-11-06 21:10:25,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:10:25,615 INFO L276 IsEmpty]: Start isEmpty. Operand 41423 states and 47908 transitions. [2018-11-06 21:10:25,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-11-06 21:10:25,632 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:10:25,633 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] [2018-11-06 21:10:25,633 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:10:25,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:10:25,634 INFO L82 PathProgramCache]: Analyzing trace with hash -367565781, now seen corresponding path program 1 times [2018-11-06 21:10:25,634 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:10:25,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:10:25,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:10:25,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:10:25,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:10:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:10:26,192 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-06 21:10:26,193 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:10:26,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:10:26,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:10:26,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:10:26,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:10:26,194 INFO L87 Difference]: Start difference. First operand 41423 states and 47908 transitions. Second operand 4 states. [2018-11-06 21:10:32,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:10:32,526 INFO L93 Difference]: Finished difference Result 84348 states and 97328 transitions. [2018-11-06 21:10:32,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:10:32,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 396 [2018-11-06 21:10:32,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:10:32,578 INFO L225 Difference]: With dead ends: 84348 [2018-11-06 21:10:32,579 INFO L226 Difference]: Without dead ends: 39917 [2018-11-06 21:10:32,619 INFO L604 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 [2018-11-06 21:10:32,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39917 states. [2018-11-06 21:10:33,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39917 to 39917. [2018-11-06 21:10:33,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39917 states. [2018-11-06 21:10:33,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39917 states to 39917 states and 43913 transitions. [2018-11-06 21:10:33,103 INFO L78 Accepts]: Start accepts. Automaton has 39917 states and 43913 transitions. Word has length 396 [2018-11-06 21:10:33,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:10:33,104 INFO L480 AbstractCegarLoop]: Abstraction has 39917 states and 43913 transitions. [2018-11-06 21:10:33,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:10:33,104 INFO L276 IsEmpty]: Start isEmpty. Operand 39917 states and 43913 transitions. [2018-11-06 21:10:33,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-11-06 21:10:33,120 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:10:33,120 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] [2018-11-06 21:10:33,120 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:10:33,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:10:33,121 INFO L82 PathProgramCache]: Analyzing trace with hash -534694013, now seen corresponding path program 1 times [2018-11-06 21:10:33,121 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:10:33,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:10:33,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:10:33,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:10:33,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:10:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:10:33,703 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 332 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-11-06 21:10:33,703 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:10:33,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:10:33,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:10:33,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:10:33,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:10:33,705 INFO L87 Difference]: Start difference. First operand 39917 states and 43913 transitions. Second operand 4 states. [2018-11-06 21:10:41,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:10:41,164 INFO L93 Difference]: Finished difference Result 101640 states and 112569 transitions. [2018-11-06 21:10:41,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:10:41,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 400 [2018-11-06 21:10:41,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:10:41,245 INFO L225 Difference]: With dead ends: 101640 [2018-11-06 21:10:41,245 INFO L226 Difference]: Without dead ends: 62477 [2018-11-06 21:10:41,271 INFO L604 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 [2018-11-06 21:10:41,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62477 states. [2018-11-06 21:10:41,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62477 to 58717. [2018-11-06 21:10:41,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58717 states. [2018-11-06 21:10:41,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58717 states to 58717 states and 63103 transitions. [2018-11-06 21:10:41,888 INFO L78 Accepts]: Start accepts. Automaton has 58717 states and 63103 transitions. Word has length 400 [2018-11-06 21:10:41,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:10:41,889 INFO L480 AbstractCegarLoop]: Abstraction has 58717 states and 63103 transitions. [2018-11-06 21:10:41,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:10:41,889 INFO L276 IsEmpty]: Start isEmpty. Operand 58717 states and 63103 transitions. [2018-11-06 21:10:41,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2018-11-06 21:10:41,908 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:10:41,909 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] [2018-11-06 21:10:41,909 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:10:41,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:10:41,909 INFO L82 PathProgramCache]: Analyzing trace with hash -541352502, now seen corresponding path program 1 times [2018-11-06 21:10:41,910 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:10:41,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:10:41,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:10:41,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:10:41,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:10:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:10:42,562 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 8 [2018-11-06 21:10:42,708 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-11-06 21:10:42,708 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:10:42,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 21:10:42,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 21:10:42,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 21:10:42,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:10:42,709 INFO L87 Difference]: Start difference. First operand 58717 states and 63103 transitions. Second operand 6 states. [2018-11-06 21:10:48,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:10:48,676 INFO L93 Difference]: Finished difference Result 133708 states and 143478 transitions. [2018-11-06 21:10:48,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:10:48,677 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 441 [2018-11-06 21:10:48,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:10:48,747 INFO L225 Difference]: With dead ends: 133708 [2018-11-06 21:10:48,747 INFO L226 Difference]: Without dead ends: 63681 [2018-11-06 21:10:48,789 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:10:48,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63681 states. [2018-11-06 21:10:49,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63681 to 61693. [2018-11-06 21:10:49,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61693 states. [2018-11-06 21:10:49,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61693 states to 61693 states and 65558 transitions. [2018-11-06 21:10:49,908 INFO L78 Accepts]: Start accepts. Automaton has 61693 states and 65558 transitions. Word has length 441 [2018-11-06 21:10:49,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:10:49,909 INFO L480 AbstractCegarLoop]: Abstraction has 61693 states and 65558 transitions. [2018-11-06 21:10:49,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 21:10:49,909 INFO L276 IsEmpty]: Start isEmpty. Operand 61693 states and 65558 transitions. [2018-11-06 21:10:49,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2018-11-06 21:10:49,918 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:10:49,919 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] [2018-11-06 21:10:49,919 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:10:49,919 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:10:49,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1867752915, now seen corresponding path program 1 times [2018-11-06 21:10:49,920 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:10:49,920 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:10:49,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:10:49,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:10:49,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:10:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:10:50,417 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2018-11-06 21:10:50,417 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:10:50,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:10:50,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:10:50,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:10:50,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:10:50,419 INFO L87 Difference]: Start difference. First operand 61693 states and 65558 transitions. Second operand 4 states. [2018-11-06 21:10:57,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:10:57,386 INFO L93 Difference]: Finished difference Result 175279 states and 186210 transitions. [2018-11-06 21:10:57,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:10:57,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 444 [2018-11-06 21:10:57,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:10:57,521 INFO L225 Difference]: With dead ends: 175279 [2018-11-06 21:10:57,521 INFO L226 Difference]: Without dead ends: 112834 [2018-11-06 21:10:57,569 INFO L604 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 [2018-11-06 21:10:57,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112834 states. [2018-11-06 21:10:59,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112834 to 91772. [2018-11-06 21:10:59,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91772 states. [2018-11-06 21:10:59,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91772 states to 91772 states and 96536 transitions. [2018-11-06 21:10:59,526 INFO L78 Accepts]: Start accepts. Automaton has 91772 states and 96536 transitions. Word has length 444 [2018-11-06 21:10:59,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:10:59,527 INFO L480 AbstractCegarLoop]: Abstraction has 91772 states and 96536 transitions. [2018-11-06 21:10:59,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:10:59,527 INFO L276 IsEmpty]: Start isEmpty. Operand 91772 states and 96536 transitions. [2018-11-06 21:10:59,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-11-06 21:10:59,539 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:10:59,539 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] [2018-11-06 21:10:59,539 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:10:59,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:10:59,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1149301670, now seen corresponding path program 1 times [2018-11-06 21:10:59,540 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:10:59,540 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:10:59,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:10:59,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:10:59,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:10:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:10:59,927 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 534 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-11-06 21:10:59,927 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:10:59,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:10:59,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:10:59,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:10:59,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:10:59,929 INFO L87 Difference]: Start difference. First operand 91772 states and 96536 transitions. Second operand 4 states. [2018-11-06 21:11:06,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:11:06,419 INFO L93 Difference]: Finished difference Result 195574 states and 205420 transitions. [2018-11-06 21:11:06,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:11:06,420 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 478 [2018-11-06 21:11:06,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:11:06,559 INFO L225 Difference]: With dead ends: 195574 [2018-11-06 21:11:06,559 INFO L226 Difference]: Without dead ends: 104556 [2018-11-06 21:11:06,618 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:11:06,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104556 states. [2018-11-06 21:11:08,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104556 to 97036. [2018-11-06 21:11:08,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97036 states. [2018-11-06 21:11:08,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97036 states to 97036 states and 101365 transitions. [2018-11-06 21:11:08,794 INFO L78 Accepts]: Start accepts. Automaton has 97036 states and 101365 transitions. Word has length 478 [2018-11-06 21:11:08,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:11:08,795 INFO L480 AbstractCegarLoop]: Abstraction has 97036 states and 101365 transitions. [2018-11-06 21:11:08,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:11:08,795 INFO L276 IsEmpty]: Start isEmpty. Operand 97036 states and 101365 transitions. [2018-11-06 21:11:08,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-11-06 21:11:08,809 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:11:08,810 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] [2018-11-06 21:11:08,810 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:11:08,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:11:08,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1110604286, now seen corresponding path program 1 times [2018-11-06 21:11:08,811 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:11:08,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:11:08,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:11:08,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:11:08,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:11:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:11:09,348 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 379 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-11-06 21:11:09,349 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:11:09,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:11:09,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:11:09,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:11:09,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:11:09,350 INFO L87 Difference]: Start difference. First operand 97036 states and 101365 transitions. Second operand 4 states. [2018-11-06 21:11:15,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:11:15,566 INFO L93 Difference]: Finished difference Result 193318 states and 201971 transitions. [2018-11-06 21:11:15,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:11:15,566 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 506 [2018-11-06 21:11:15,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:11:15,670 INFO L225 Difference]: With dead ends: 193318 [2018-11-06 21:11:15,670 INFO L226 Difference]: Without dead ends: 97036 [2018-11-06 21:11:15,722 INFO L604 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 [2018-11-06 21:11:15,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97036 states. [2018-11-06 21:11:16,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97036 to 94028. [2018-11-06 21:11:16,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94028 states. [2018-11-06 21:11:17,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94028 states to 94028 states and 97251 transitions. [2018-11-06 21:11:17,716 INFO L78 Accepts]: Start accepts. Automaton has 94028 states and 97251 transitions. Word has length 506 [2018-11-06 21:11:17,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:11:17,717 INFO L480 AbstractCegarLoop]: Abstraction has 94028 states and 97251 transitions. [2018-11-06 21:11:17,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:11:17,717 INFO L276 IsEmpty]: Start isEmpty. Operand 94028 states and 97251 transitions. [2018-11-06 21:11:17,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2018-11-06 21:11:17,727 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:11:17,727 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] [2018-11-06 21:11:17,728 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:11:17,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:11:17,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1309527391, now seen corresponding path program 1 times [2018-11-06 21:11:17,729 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:11:17,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:11:17,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:11:17,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:11:17,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:11:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:11:18,326 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2018-11-06 21:11:18,326 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:11:18,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:11:18,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:11:18,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:11:18,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:11:18,328 INFO L87 Difference]: Start difference. First operand 94028 states and 97251 transitions. Second operand 5 states. [2018-11-06 21:11:27,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:11:27,836 INFO L93 Difference]: Finished difference Result 278320 states and 287954 transitions. [2018-11-06 21:11:27,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:11:27,836 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 558 [2018-11-06 21:11:27,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:11:28,056 INFO L225 Difference]: With dead ends: 278320 [2018-11-06 21:11:28,056 INFO L226 Difference]: Without dead ends: 185046 [2018-11-06 21:11:28,113 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:11:28,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185046 states. [2018-11-06 21:11:29,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185046 to 151955. [2018-11-06 21:11:29,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151955 states. [2018-11-06 21:11:29,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151955 states to 151955 states and 156456 transitions. [2018-11-06 21:11:29,585 INFO L78 Accepts]: Start accepts. Automaton has 151955 states and 156456 transitions. Word has length 558 [2018-11-06 21:11:29,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:11:29,585 INFO L480 AbstractCegarLoop]: Abstraction has 151955 states and 156456 transitions. [2018-11-06 21:11:29,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:11:29,585 INFO L276 IsEmpty]: Start isEmpty. Operand 151955 states and 156456 transitions. [2018-11-06 21:11:29,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2018-11-06 21:11:29,609 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:11:29,609 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] [2018-11-06 21:11:29,609 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:11:29,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:11:29,610 INFO L82 PathProgramCache]: Analyzing trace with hash -982508664, now seen corresponding path program 1 times [2018-11-06 21:11:29,610 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:11:29,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:11:29,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:11:29,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:11:29,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:11:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:11:31,419 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 571 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2018-11-06 21:11:31,419 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:11:31,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:11:31,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:11:31,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:11:31,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:11:31,420 INFO L87 Difference]: Start difference. First operand 151955 states and 156456 transitions. Second operand 3 states. [2018-11-06 21:11:37,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:11:37,894 INFO L93 Difference]: Finished difference Result 319700 states and 329478 transitions. [2018-11-06 21:11:37,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:11:37,894 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 703 [2018-11-06 21:11:37,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:11:38,079 INFO L225 Difference]: With dead ends: 319700 [2018-11-06 21:11:38,080 INFO L226 Difference]: Without dead ends: 168499 [2018-11-06 21:11:38,131 INFO L604 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 [2018-11-06 21:11:38,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168499 states. [2018-11-06 21:11:39,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168499 to 161731. [2018-11-06 21:11:39,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161731 states. [2018-11-06 21:11:39,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161731 states to 161731 states and 166455 transitions. [2018-11-06 21:11:39,651 INFO L78 Accepts]: Start accepts. Automaton has 161731 states and 166455 transitions. Word has length 703 [2018-11-06 21:11:39,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:11:39,651 INFO L480 AbstractCegarLoop]: Abstraction has 161731 states and 166455 transitions. [2018-11-06 21:11:39,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:11:39,652 INFO L276 IsEmpty]: Start isEmpty. Operand 161731 states and 166455 transitions. [2018-11-06 21:11:39,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 917 [2018-11-06 21:11:39,691 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:11:39,692 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] [2018-11-06 21:11:39,692 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:11:39,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:11:39,693 INFO L82 PathProgramCache]: Analyzing trace with hash 708687686, now seen corresponding path program 1 times [2018-11-06 21:11:39,693 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:11:39,693 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:11:39,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:11:39,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:11:39,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:11:39,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:11:41,582 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2018-11-06 21:11:41,583 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:11:41,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:11:41,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:11:41,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:11:41,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:11:41,584 INFO L87 Difference]: Start difference. First operand 161731 states and 166455 transitions. Second operand 4 states. [2018-11-06 21:11:47,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:11:47,985 INFO L93 Difference]: Finished difference Result 310656 states and 320023 transitions. [2018-11-06 21:11:47,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:11:47,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 916 [2018-11-06 21:11:47,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:11:48,147 INFO L225 Difference]: With dead ends: 310656 [2018-11-06 21:11:48,147 INFO L226 Difference]: Without dead ends: 149679 [2018-11-06 21:11:48,226 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:11:48,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149679 states. [2018-11-06 21:11:53,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149679 to 141407. [2018-11-06 21:11:53,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141407 states. [2018-11-06 21:11:53,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141407 states to 141407 states and 144558 transitions. [2018-11-06 21:11:53,350 INFO L78 Accepts]: Start accepts. Automaton has 141407 states and 144558 transitions. Word has length 916 [2018-11-06 21:11:53,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:11:53,351 INFO L480 AbstractCegarLoop]: Abstraction has 141407 states and 144558 transitions. [2018-11-06 21:11:53,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:11:53,351 INFO L276 IsEmpty]: Start isEmpty. Operand 141407 states and 144558 transitions. [2018-11-06 21:11:53,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1446 [2018-11-06 21:11:53,456 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:11:53,457 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] [2018-11-06 21:11:53,457 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:11:53,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:11:53,458 INFO L82 PathProgramCache]: Analyzing trace with hash -170690272, now seen corresponding path program 1 times [2018-11-06 21:11:53,458 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:11:53,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:11:53,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:11:53,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:11:53,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:11:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:11:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1720 backedges. 917 proven. 0 refuted. 0 times theorem prover too weak. 803 trivial. 0 not checked. [2018-11-06 21:11:56,598 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:11:56,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 21:11:56,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:11:56,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:11:56,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:11:56,599 INFO L87 Difference]: Start difference. First operand 141407 states and 144558 transitions. Second operand 5 states. [2018-11-06 21:12:06,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:12:06,159 INFO L93 Difference]: Finished difference Result 342223 states and 349959 transitions. [2018-11-06 21:12:06,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:12:06,160 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1445 [2018-11-06 21:12:06,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:12:06,387 INFO L225 Difference]: With dead ends: 342223 [2018-11-06 21:12:06,387 INFO L226 Difference]: Without dead ends: 200818 [2018-11-06 21:12:06,461 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:12:06,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200818 states. [2018-11-06 21:12:08,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200818 to 156450. [2018-11-06 21:12:08,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156450 states. [2018-11-06 21:12:08,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156450 states to 156450 states and 159899 transitions. [2018-11-06 21:12:08,489 INFO L78 Accepts]: Start accepts. Automaton has 156450 states and 159899 transitions. Word has length 1445 [2018-11-06 21:12:08,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:12:08,490 INFO L480 AbstractCegarLoop]: Abstraction has 156450 states and 159899 transitions. [2018-11-06 21:12:08,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:12:08,491 INFO L276 IsEmpty]: Start isEmpty. Operand 156450 states and 159899 transitions. [2018-11-06 21:12:08,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1484 [2018-11-06 21:12:08,596 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:12:08,597 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] [2018-11-06 21:12:08,598 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:12:08,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:12:08,598 INFO L82 PathProgramCache]: Analyzing trace with hash 496865041, now seen corresponding path program 1 times [2018-11-06 21:12:08,598 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:12:08,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:12:08,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:12:08,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:12:08,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:12:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:12:12,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 640 proven. 501 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-11-06 21:12:12,547 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:12:12,547 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:12:12,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:12:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:12:12,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:12:13,452 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-06 21:12:14,330 WARN L179 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 28 [2018-11-06 21:12:18,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 412 proven. 876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:12:18,063 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:12:18,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 11 [2018-11-06 21:12:18,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-06 21:12:18,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-06 21:12:18,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-06 21:12:18,066 INFO L87 Difference]: Start difference. First operand 156450 states and 159899 transitions. Second operand 11 states. Received shutdown request... [2018-11-06 21:12:47,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-06 21:12:47,181 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 21:12:47,186 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 21:12:47,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:12:47 BoogieIcfgContainer [2018-11-06 21:12:47,186 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 21:12:47,187 INFO L168 Benchmark]: Toolchain (without parser) took 224537.90 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-06 21:12:47,188 INFO L168 Benchmark]: CDTParser took 0.30 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. [2018-11-06 21:12:47,189 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2175.20 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. [2018-11-06 21:12:47,190 INFO L168 Benchmark]: Boogie Procedure Inliner took 624.29 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -944.6 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2018-11-06 21:12:47,191 INFO L168 Benchmark]: Boogie Preprocessor took 483.61 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 49.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. [2018-11-06 21:12:47,191 INFO L168 Benchmark]: RCFGBuilder took 8991.63 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 243.3 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -221.0 MB). Peak memory consumption was 640.4 MB. Max. memory is 7.1 GB. [2018-11-06 21:12:47,192 INFO L168 Benchmark]: TraceAbstraction took 212258.10 ms. Allocated memory was 2.5 GB in the beginning and 4.5 GB in the end (delta: 2.0 GB). Free memory was 2.3 GB in the beginning and 2.9 GB in the end (delta: -631.3 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-06 21:12:47,197 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 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 2175.20 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 624.29 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -944.6 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 483.61 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 49.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8991.63 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 243.3 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -221.0 MB). Peak memory consumption was 640.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212258.10 ms. Allocated memory was 2.5 GB in the beginning and 4.5 GB in the end (delta: 2.0 GB). Free memory was 2.3 GB in the beginning and 2.9 GB in the end (delta: -631.3 MB). Peak memory consumption was 1.4 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 constructing difference of abstraction (156450states) and FLOYD_HOARE automaton (currently 23 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (251630 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 212.1s OverallTime, 16 OverallIterations, 6 TraceHistogramMax, 166.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6989 SDtfs, 46845 SDslu, 1602 SDs, 0 SdLazy, 99734 SolverSat, 20371 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 128.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2326 GetRequests, 2230 SyntacticMatches, 22 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=161731occurred 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: 19.9s AutomataMinimizationTime, 15 MinimizatonAttempts, 150235 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 15.2s InterpolantComputationTime, 11009 NumberOfCodeBlocks, 11009 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 10989 ConstructedInterpolants, 41 QuantifiedInterpolants, 39141958 SizeOfPredicates, 12 NumberOfNonLiveVariables, 2634 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 20 InterpolantComputations, 15 PerfectInterpolantSequences, 9868/11258 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown