java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:23:25,700 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:23:25,702 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:23:25,714 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:23:25,714 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:23:25,715 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:23:25,716 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:23:25,718 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:23:25,720 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:23:25,721 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:23:25,722 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:23:25,722 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:23:25,723 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:23:25,724 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:23:25,725 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:23:25,726 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:23:25,726 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:23:25,728 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:23:25,730 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:23:25,731 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:23:25,732 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:23:25,733 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:23:25,735 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 20:23:25,743 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 20:23:25,758 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:23:25,758 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:23:25,759 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:23:25,759 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:23:25,759 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:23:25,760 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:23:25,760 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:23:25,760 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:23:25,760 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:23:25,760 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:23:25,761 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:23:25,761 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:23:25,761 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:23:25,761 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:23:25,761 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:23:25,762 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:23:25,762 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:23:25,762 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:23:25,762 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:23:25,762 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:23:25,763 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:23:25,763 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:23:25,763 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:23:25,763 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:23:25,763 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:23:25,764 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:23:25,764 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:23:25,764 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:23:25,834 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:23:25,847 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:23:25,852 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:23:25,853 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:23:25,854 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:23:25,855 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label57_true-unreach-call.c [2018-10-23 20:23:25,922 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c9689eb39/977553da17cd489ca7b7cd3733c60b31/FLAGb2c55ad37 [2018-10-23 20:23:26,768 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:23:26,768 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label57_true-unreach-call.c [2018-10-23 20:23:26,808 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c9689eb39/977553da17cd489ca7b7cd3733c60b31/FLAGb2c55ad37 [2018-10-23 20:23:26,831 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c9689eb39/977553da17cd489ca7b7cd3733c60b31 [2018-10-23 20:23:26,844 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:23:26,846 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:23:26,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:23:26,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:23:26,853 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:23:26,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:23:26" (1/1) ... [2018-10-23 20:23:26,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10e73541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:26, skipping insertion in model container [2018-10-23 20:23:26,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:23:26" (1/1) ... [2018-10-23 20:23:26,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:23:27,054 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:23:28,533 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:23:28,538 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:23:29,439 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:23:29,480 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:23:29,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:29 WrapperNode [2018-10-23 20:23:29,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:23:29,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:23:29,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:23:29,482 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:23:29,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:29" (1/1) ... [2018-10-23 20:23:29,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:29" (1/1) ... [2018-10-23 20:23:30,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:23:30,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:23:30,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:23:30,436 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:23:30,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:29" (1/1) ... [2018-10-23 20:23:30,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:29" (1/1) ... [2018-10-23 20:23:30,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:29" (1/1) ... [2018-10-23 20:23:30,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:29" (1/1) ... [2018-10-23 20:23:30,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:29" (1/1) ... [2018-10-23 20:23:30,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:29" (1/1) ... [2018-10-23 20:23:30,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:29" (1/1) ... [2018-10-23 20:23:31,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:23:31,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:23:31,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:23:31,028 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:23:31,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:23:31,098 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:23:31,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:23:31,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:23:45,244 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:23:45,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:23:45 BoogieIcfgContainer [2018-10-23 20:23:45,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:23:45,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:23:45,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:23:45,249 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:23:45,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:23:26" (1/3) ... [2018-10-23 20:23:45,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1488b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:23:45, skipping insertion in model container [2018-10-23 20:23:45,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:29" (2/3) ... [2018-10-23 20:23:45,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1488b7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:23:45, skipping insertion in model container [2018-10-23 20:23:45,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:23:45" (3/3) ... [2018-10-23 20:23:45,254 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label57_true-unreach-call.c [2018-10-23 20:23:45,265 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:23:45,275 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:23:45,292 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:23:45,338 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:23:45,339 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:23:45,339 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:23:45,339 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:23:45,339 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:23:45,339 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:23:45,339 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:23:45,339 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:23:45,340 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:23:45,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-23 20:23:45,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-23 20:23:45,388 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:23:45,389 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:23:45,392 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:23:45,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:23:45,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1515441142, now seen corresponding path program 1 times [2018-10-23 20:23:45,400 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:23:45,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:23:45,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:23:45,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:23:45,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:23:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:23:45,958 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-23 20:23:46,295 WARN L179 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-23 20:23:46,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:23:46,674 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:23:46,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:23:46,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:23:46,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:23:46,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:23:46,701 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 5 states. [2018-10-23 20:23:47,005 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-23 20:24:06,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:24:06,283 INFO L93 Difference]: Finished difference Result 4624 states and 8784 transitions. [2018-10-23 20:24:06,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:24:06,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2018-10-23 20:24:06,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:24:06,335 INFO L225 Difference]: With dead ends: 4624 [2018-10-23 20:24:06,336 INFO L226 Difference]: Without dead ends: 3515 [2018-10-23 20:24:06,346 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:24:06,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3515 states. [2018-10-23 20:24:06,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3515 to 3514. [2018-10-23 20:24:06,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3514 states. [2018-10-23 20:24:06,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 5233 transitions. [2018-10-23 20:24:06,541 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 5233 transitions. Word has length 62 [2018-10-23 20:24:06,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:24:06,542 INFO L481 AbstractCegarLoop]: Abstraction has 3514 states and 5233 transitions. [2018-10-23 20:24:06,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:24:06,543 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 5233 transitions. [2018-10-23 20:24:06,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-23 20:24:06,560 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:24:06,563 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:24:06,564 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:24:06,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:24:06,565 INFO L82 PathProgramCache]: Analyzing trace with hash 342361045, now seen corresponding path program 1 times [2018-10-23 20:24:06,565 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:24:06,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:24:06,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:24:06,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:24:06,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:24:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:24:07,029 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-10-23 20:24:07,029 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:24:07,029 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:24:07,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:24:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:24:07,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:24:07,593 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 42 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:24:07,617 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:24:07,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 6 [2018-10-23 20:24:07,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:24:07,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:24:07,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:24:07,620 INFO L87 Difference]: Start difference. First operand 3514 states and 5233 transitions. Second operand 7 states. [2018-10-23 20:24:09,039 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-23 20:24:36,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:24:36,847 INFO L93 Difference]: Finished difference Result 18122 states and 30330 transitions. [2018-10-23 20:24:36,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-23 20:24:36,847 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2018-10-23 20:24:36,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:24:36,928 INFO L225 Difference]: With dead ends: 18122 [2018-10-23 20:24:36,928 INFO L226 Difference]: Without dead ends: 15398 [2018-10-23 20:24:36,936 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-10-23 20:24:36,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15398 states. [2018-10-23 20:24:37,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15398 to 13800. [2018-10-23 20:24:37,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13800 states. [2018-10-23 20:24:37,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13800 states to 13800 states and 18814 transitions. [2018-10-23 20:24:37,418 INFO L78 Accepts]: Start accepts. Automaton has 13800 states and 18814 transitions. Word has length 188 [2018-10-23 20:24:37,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:24:37,420 INFO L481 AbstractCegarLoop]: Abstraction has 13800 states and 18814 transitions. [2018-10-23 20:24:37,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:24:37,420 INFO L276 IsEmpty]: Start isEmpty. Operand 13800 states and 18814 transitions. [2018-10-23 20:24:37,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-10-23 20:24:37,439 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:24:37,439 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:24:37,440 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:24:37,440 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:24:37,440 INFO L82 PathProgramCache]: Analyzing trace with hash 859592744, now seen corresponding path program 1 times [2018-10-23 20:24:37,440 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:24:37,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:24:37,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:24:37,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:24:37,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:24:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:24:38,031 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 119 proven. 66 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-23 20:24:38,031 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:24:38,031 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:24:38,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:24:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:24:38,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:24:38,255 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-23 20:24:38,277 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:24:38,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-23 20:24:38,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:24:38,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:24:38,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:24:38,280 INFO L87 Difference]: Start difference. First operand 13800 states and 18814 transitions. Second operand 5 states. [2018-10-23 20:24:58,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:24:58,812 INFO L93 Difference]: Finished difference Result 73393 states and 106763 transitions. [2018-10-23 20:24:58,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 20:24:58,812 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2018-10-23 20:24:58,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:24:58,976 INFO L225 Difference]: With dead ends: 73393 [2018-10-23 20:24:58,976 INFO L226 Difference]: Without dead ends: 57223 [2018-10-23 20:24:59,010 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:24:59,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57223 states. [2018-10-23 20:24:59,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57223 to 53268. [2018-10-23 20:24:59,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53268 states. [2018-10-23 20:25:00,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53268 states to 53268 states and 66471 transitions. [2018-10-23 20:25:00,272 INFO L78 Accepts]: Start accepts. Automaton has 53268 states and 66471 transitions. Word has length 320 [2018-10-23 20:25:00,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:25:00,273 INFO L481 AbstractCegarLoop]: Abstraction has 53268 states and 66471 transitions. [2018-10-23 20:25:00,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:25:00,274 INFO L276 IsEmpty]: Start isEmpty. Operand 53268 states and 66471 transitions. [2018-10-23 20:25:00,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2018-10-23 20:25:00,306 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:25:00,306 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, 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:25:00,307 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:25:00,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:25:00,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1736701088, now seen corresponding path program 1 times [2018-10-23 20:25:00,308 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:25:00,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:25:00,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:25:00,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:25:00,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:25:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:25:00,901 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 506 proven. 92 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2018-10-23 20:25:00,901 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:25:00,902 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:25:00,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:25:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:25:01,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:25:01,294 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 239 proven. 0 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked. [2018-10-23 20:25:01,328 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:25:01,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-23 20:25:01,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 20:25:01,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 20:25:01,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:25:01,331 INFO L87 Difference]: Start difference. First operand 53268 states and 66471 transitions. Second operand 6 states. [2018-10-23 20:25:30,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:25:30,586 INFO L93 Difference]: Finished difference Result 225043 states and 279269 transitions. [2018-10-23 20:25:30,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 20:25:30,587 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 485 [2018-10-23 20:25:30,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:25:30,926 INFO L225 Difference]: With dead ends: 225043 [2018-10-23 20:25:30,926 INFO L226 Difference]: Without dead ends: 152760 [2018-10-23 20:25:31,003 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:25:31,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152760 states. [2018-10-23 20:25:32,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152760 to 143142. [2018-10-23 20:25:32,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143142 states. [2018-10-23 20:25:32,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143142 states to 143142 states and 169152 transitions. [2018-10-23 20:25:32,722 INFO L78 Accepts]: Start accepts. Automaton has 143142 states and 169152 transitions. Word has length 485 [2018-10-23 20:25:32,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:25:32,723 INFO L481 AbstractCegarLoop]: Abstraction has 143142 states and 169152 transitions. [2018-10-23 20:25:32,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 20:25:32,723 INFO L276 IsEmpty]: Start isEmpty. Operand 143142 states and 169152 transitions. [2018-10-23 20:25:32,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2018-10-23 20:25:32,773 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:25:32,773 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:25:32,773 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:25:32,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:25:32,774 INFO L82 PathProgramCache]: Analyzing trace with hash 688285591, now seen corresponding path program 1 times [2018-10-23 20:25:32,774 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:25:32,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:25:32,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:25:32,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:25:32,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:25:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:25:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 679 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2018-10-23 20:25:34,038 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:25:34,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:25:34,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:25:34,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:25:34,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:25:34,040 INFO L87 Difference]: Start difference. First operand 143142 states and 169152 transitions. Second operand 4 states. [2018-10-23 20:25:44,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:25:44,329 INFO L93 Difference]: Finished difference Result 359598 states and 426237 transitions. [2018-10-23 20:25:44,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:25:44,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 592 [2018-10-23 20:25:44,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:25:44,607 INFO L225 Difference]: With dead ends: 359598 [2018-10-23 20:25:44,608 INFO L226 Difference]: Without dead ends: 217246 [2018-10-23 20:25:44,716 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:25:44,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217246 states. [2018-10-23 20:25:47,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217246 to 201431. [2018-10-23 20:25:47,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201431 states. [2018-10-23 20:25:47,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201431 states to 201431 states and 231837 transitions. [2018-10-23 20:25:47,898 INFO L78 Accepts]: Start accepts. Automaton has 201431 states and 231837 transitions. Word has length 592 [2018-10-23 20:25:47,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:25:47,898 INFO L481 AbstractCegarLoop]: Abstraction has 201431 states and 231837 transitions. [2018-10-23 20:25:47,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:25:47,899 INFO L276 IsEmpty]: Start isEmpty. Operand 201431 states and 231837 transitions. [2018-10-23 20:25:47,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2018-10-23 20:25:47,948 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:25:47,949 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:25:47,949 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:25:47,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:25:47,950 INFO L82 PathProgramCache]: Analyzing trace with hash -350476805, now seen corresponding path program 1 times [2018-10-23 20:25:47,950 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:25:47,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:25:47,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:25:47,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:25:47,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:25:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:25:49,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 846 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2018-10-23 20:25:49,618 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:25:49,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:25:49,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:25:49,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:25:49,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:25:49,619 INFO L87 Difference]: Start difference. First operand 201431 states and 231837 transitions. Second operand 4 states. [2018-10-23 20:26:09,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:26:09,148 INFO L93 Difference]: Finished difference Result 478790 states and 551022 transitions. [2018-10-23 20:26:09,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:26:09,148 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 736 [2018-10-23 20:26:09,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:26:09,516 INFO L225 Difference]: With dead ends: 478790 [2018-10-23 20:26:09,516 INFO L226 Difference]: Without dead ends: 278149 [2018-10-23 20:26:09,649 INFO L605 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 [2018-10-23 20:26:11,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278149 states. [2018-10-23 20:26:14,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278149 to 275612. [2018-10-23 20:26:14,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275612 states. [2018-10-23 20:26:14,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275612 states to 275612 states and 314861 transitions. [2018-10-23 20:26:14,910 INFO L78 Accepts]: Start accepts. Automaton has 275612 states and 314861 transitions. Word has length 736 [2018-10-23 20:26:14,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:26:14,911 INFO L481 AbstractCegarLoop]: Abstraction has 275612 states and 314861 transitions. [2018-10-23 20:26:14,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:26:14,911 INFO L276 IsEmpty]: Start isEmpty. Operand 275612 states and 314861 transitions. [2018-10-23 20:26:14,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2018-10-23 20:26:14,945 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:26:14,946 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, 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, 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, 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] [2018-10-23 20:26:14,946 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:26:14,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:26:14,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1140515811, now seen corresponding path program 1 times [2018-10-23 20:26:14,946 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:26:14,947 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:26:14,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:26:14,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:26:14,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:26:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:26:15,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 913 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2018-10-23 20:26:15,993 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:26:15,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:26:15,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:26:15,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:26:15,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:26:15,995 INFO L87 Difference]: Start difference. First operand 275612 states and 314861 transitions. Second operand 4 states. [2018-10-23 20:26:29,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:26:29,342 INFO L93 Difference]: Finished difference Result 547300 states and 625609 transitions. [2018-10-23 20:26:29,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:26:29,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 748 [2018-10-23 20:26:29,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:26:29,671 INFO L225 Difference]: With dead ends: 547300 [2018-10-23 20:26:29,671 INFO L226 Difference]: Without dead ends: 272478 [2018-10-23 20:26:29,781 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:26:29,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272478 states. [2018-10-23 20:26:39,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272478 to 262210. [2018-10-23 20:26:39,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262210 states. [2018-10-23 20:26:39,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262210 states to 262210 states and 290906 transitions. [2018-10-23 20:26:39,443 INFO L78 Accepts]: Start accepts. Automaton has 262210 states and 290906 transitions. Word has length 748 [2018-10-23 20:26:39,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:26:39,443 INFO L481 AbstractCegarLoop]: Abstraction has 262210 states and 290906 transitions. [2018-10-23 20:26:39,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:26:39,444 INFO L276 IsEmpty]: Start isEmpty. Operand 262210 states and 290906 transitions. [2018-10-23 20:26:39,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 854 [2018-10-23 20:26:39,489 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:26:39,490 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:26:39,490 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:26:39,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:26:39,491 INFO L82 PathProgramCache]: Analyzing trace with hash -900508273, now seen corresponding path program 1 times [2018-10-23 20:26:39,491 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:26:39,492 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:26:39,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:26:39,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:26:39,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:26:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:26:41,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 1301 proven. 0 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2018-10-23 20:26:41,209 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:26:41,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:26:41,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:26:41,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:26:41,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:26:41,210 INFO L87 Difference]: Start difference. First operand 262210 states and 290906 transitions. Second operand 4 states. [2018-10-23 20:26:51,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:26:51,724 INFO L93 Difference]: Finished difference Result 511778 states and 568710 transitions. [2018-10-23 20:26:51,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:26:51,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 853 [2018-10-23 20:26:51,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:26:52,145 INFO L225 Difference]: With dead ends: 511778 [2018-10-23 20:26:52,145 INFO L226 Difference]: Without dead ends: 250358 [2018-10-23 20:26:52,278 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:26:52,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250358 states. [2018-10-23 20:26:55,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250358 to 210940. [2018-10-23 20:26:55,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210940 states. [2018-10-23 20:26:55,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210940 states to 210940 states and 226953 transitions. [2018-10-23 20:26:55,775 INFO L78 Accepts]: Start accepts. Automaton has 210940 states and 226953 transitions. Word has length 853 [2018-10-23 20:26:55,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:26:55,776 INFO L481 AbstractCegarLoop]: Abstraction has 210940 states and 226953 transitions. [2018-10-23 20:26:55,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:26:55,776 INFO L276 IsEmpty]: Start isEmpty. Operand 210940 states and 226953 transitions. [2018-10-23 20:26:55,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1256 [2018-10-23 20:26:55,889 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:26:55,890 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:26:55,890 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:26:55,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:26:55,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1199810611, now seen corresponding path program 1 times [2018-10-23 20:26:55,891 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:26:55,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:26:55,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:26:55,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:26:55,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:26:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:26:58,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2056 backedges. 1473 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2018-10-23 20:26:58,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:26:58,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:26:58,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:26:58,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:26:58,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:26:58,210 INFO L87 Difference]: Start difference. First operand 210940 states and 226953 transitions. Second operand 3 states. [2018-10-23 20:27:05,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:27:05,666 INFO L93 Difference]: Finished difference Result 462925 states and 497842 transitions. [2018-10-23 20:27:05,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:27:05,667 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1255 [2018-10-23 20:27:05,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:27:06,031 INFO L225 Difference]: With dead ends: 462925 [2018-10-23 20:27:06,032 INFO L226 Difference]: Without dead ends: 252775 [2018-10-23 20:27:06,168 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:27:06,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252775 states. [2018-10-23 20:27:09,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252775 to 244045. [2018-10-23 20:27:09,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244045 states. [2018-10-23 20:27:09,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244045 states to 244045 states and 261417 transitions. [2018-10-23 20:27:09,688 INFO L78 Accepts]: Start accepts. Automaton has 244045 states and 261417 transitions. Word has length 1255 [2018-10-23 20:27:09,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:27:09,689 INFO L481 AbstractCegarLoop]: Abstraction has 244045 states and 261417 transitions. [2018-10-23 20:27:09,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:27:09,689 INFO L276 IsEmpty]: Start isEmpty. Operand 244045 states and 261417 transitions. [2018-10-23 20:27:09,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1289 [2018-10-23 20:27:09,777 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:27:09,778 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 20:27:09,778 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:27:09,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:27:09,778 INFO L82 PathProgramCache]: Analyzing trace with hash 616737761, now seen corresponding path program 1 times [2018-10-23 20:27:09,778 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:27:09,778 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:27:09,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:27:09,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:27:09,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY Received shutdown request... [2018-10-23 20:27:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2018-10-23 20:27:09,931 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-23 20:27:09,931 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 20:27:09,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:27:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:27:10,274 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:27:10,303 WARN L187 SmtUtils]: Removed 1 from assertion stack [2018-10-23 20:27:10,303 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-23 20:27:10,505 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-23 20:27:10,505 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:27:10,511 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:27:10,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:27:10 BoogieIcfgContainer [2018-10-23 20:27:10,512 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:27:10,512 INFO L168 Benchmark]: Toolchain (without parser) took 223667.58 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -95.0 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-10-23 20:27:10,514 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:27:10,514 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2633.21 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-23 20:27:10,515 INFO L168 Benchmark]: Boogie Procedure Inliner took 953.89 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 793.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -991.3 MB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2018-10-23 20:27:10,523 INFO L168 Benchmark]: Boogie Preprocessor took 591.54 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 73.8 MB). Peak memory consumption was 73.8 MB. Max. memory is 7.1 GB. [2018-10-23 20:27:10,524 INFO L168 Benchmark]: RCFGBuilder took 14216.96 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 232.8 MB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 63.3 MB). Peak memory consumption was 584.9 MB. Max. memory is 7.1 GB. [2018-10-23 20:27:10,524 INFO L168 Benchmark]: TraceAbstraction took 205265.96 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.1 GB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 505.6 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-23 20:27:10,532 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2633.21 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 953.89 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 793.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -991.3 MB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 591.54 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 73.8 MB). Peak memory consumption was 73.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14216.96 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 232.8 MB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 63.3 MB). Peak memory consumption was 584.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205265.96 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.1 GB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 505.6 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 195]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 195). Cancelled while BasicCegarLoop was analyzing trace of length 1289 with TraceHistMax 7,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 205.1s OverallTime, 10 OverallIterations, 7 TraceHistogramMax, 162.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5094 SDtfs, 35556 SDslu, 2550 SDs, 0 SdLazy, 56352 SolverSat, 23786 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 128.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1048 GetRequests, 1005 SyntacticMatches, 9 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=275612occurred in iteration=6, 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: 28.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 91940 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 6232 NumberOfCodeBlocks, 6232 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 6220 ConstructedInterpolants, 0 QuantifiedInterpolants, 7506827 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1318 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 9106/9287 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown