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_label42_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:20:10,442 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:20:10,445 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:20:10,457 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:20:10,457 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:20:10,459 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:20:10,460 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:20:10,461 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:20:10,463 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:20:10,464 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:20:10,465 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:20:10,465 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:20:10,466 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:20:10,467 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:20:10,468 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:20:10,469 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:20:10,470 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:20:10,471 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:20:10,473 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:20:10,475 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:20:10,476 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:20:10,477 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:20:10,480 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 20:20:10,486 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 20:20:10,487 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 20:20:10,488 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 20:20:10,489 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 20:20:10,489 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 20:20:10,504 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:20:10,504 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:20:10,505 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:20:10,505 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:20:10,506 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:20:10,506 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:20:10,506 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:20:10,506 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:20:10,507 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:20:10,507 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:20:10,507 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:20:10,507 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:20:10,507 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:20:10,507 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:20:10,508 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:20:10,508 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:20:10,508 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:20:10,508 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:20:10,508 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:20:10,509 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:20:10,509 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:20:10,509 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:20:10,509 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:20:10,509 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:20:10,510 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:20:10,510 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:20:10,510 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:20:10,510 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:20:10,564 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:20:10,580 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:20:10,585 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:20:10,587 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:20:10,587 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:20:10,588 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label42_true-unreach-call.c [2018-10-23 20:20:10,655 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/db239ce05/b4914ba0384d48cca8bc314c374e0d8f/FLAGb592f32ac [2018-10-23 20:20:11,443 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:20:11,444 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label42_true-unreach-call.c [2018-10-23 20:20:11,485 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/db239ce05/b4914ba0384d48cca8bc314c374e0d8f/FLAGb592f32ac [2018-10-23 20:20:11,505 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/db239ce05/b4914ba0384d48cca8bc314c374e0d8f [2018-10-23 20:20:11,518 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:20:11,520 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:20:11,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:20:11,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:20:11,527 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:20:11,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:20:11" (1/1) ... [2018-10-23 20:20:11,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a4e18b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:11, skipping insertion in model container [2018-10-23 20:20:11,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:20:11" (1/1) ... [2018-10-23 20:20:11,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:20:11,743 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:20:13,331 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:20:13,336 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:20:14,140 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:20:14,182 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:20:14,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:14 WrapperNode [2018-10-23 20:20:14,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:20:14,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:20:14,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:20:14,184 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:20:14,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:14" (1/1) ... [2018-10-23 20:20:14,283 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:14" (1/1) ... [2018-10-23 20:20:15,040 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:20:15,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:20:15,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:20:15,041 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:20:15,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:14" (1/1) ... [2018-10-23 20:20:15,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:14" (1/1) ... [2018-10-23 20:20:15,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:14" (1/1) ... [2018-10-23 20:20:15,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:14" (1/1) ... [2018-10-23 20:20:15,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:14" (1/1) ... [2018-10-23 20:20:15,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:14" (1/1) ... [2018-10-23 20:20:15,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:14" (1/1) ... [2018-10-23 20:20:15,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:20:15,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:20:15,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:20:15,544 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:20:15,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:14" (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 20:20:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:20:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:20:15,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:20:28,282 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:20:28,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:20:28 BoogieIcfgContainer [2018-10-23 20:20:28,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:20:28,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:20:28,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:20:28,296 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:20:28,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:20:11" (1/3) ... [2018-10-23 20:20:28,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40dedc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:20:28, skipping insertion in model container [2018-10-23 20:20:28,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:20:14" (2/3) ... [2018-10-23 20:20:28,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40dedc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:20:28, skipping insertion in model container [2018-10-23 20:20:28,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:20:28" (3/3) ... [2018-10-23 20:20:28,301 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label42_true-unreach-call.c [2018-10-23 20:20:28,309 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:20:28,319 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:20:28,335 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:20:28,387 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:20:28,388 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:20:28,388 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:20:28,388 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:20:28,389 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:20:28,389 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:20:28,389 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:20:28,389 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:20:28,389 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:20:28,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-23 20:20:28,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-23 20:20:28,442 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:20:28,444 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, 1, 1, 1, 1] [2018-10-23 20:20:28,447 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:20:28,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:20:28,452 INFO L82 PathProgramCache]: Analyzing trace with hash -717159398, now seen corresponding path program 1 times [2018-10-23 20:20:28,454 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:20:28,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:20:28,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:28,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:20:28,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:20:29,136 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-23 20:20:29,371 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-23 20:20:29,624 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 20:20:29,627 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:20:29,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:20:29,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:20:29,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:20:29,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:20:29,653 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 5 states. [2018-10-23 20:20:29,934 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-23 20:20:49,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:20:49,817 INFO L93 Difference]: Finished difference Result 4624 states and 8784 transitions. [2018-10-23 20:20:49,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:20:49,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2018-10-23 20:20:49,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:20:49,866 INFO L225 Difference]: With dead ends: 4624 [2018-10-23 20:20:49,867 INFO L226 Difference]: Without dead ends: 3515 [2018-10-23 20:20:49,876 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:20:49,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3515 states. [2018-10-23 20:20:50,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3515 to 3514. [2018-10-23 20:20:50,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3514 states. [2018-10-23 20:20:50,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 5233 transitions. [2018-10-23 20:20:50,079 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 5233 transitions. Word has length 66 [2018-10-23 20:20:50,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:20:50,080 INFO L481 AbstractCegarLoop]: Abstraction has 3514 states and 5233 transitions. [2018-10-23 20:20:50,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:20:50,080 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 5233 transitions. [2018-10-23 20:20:50,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-23 20:20:50,094 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:20:50,098 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, 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] [2018-10-23 20:20:50,098 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:20:50,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:20:50,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1852669477, now seen corresponding path program 1 times [2018-10-23 20:20:50,099 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:20:50,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:20:50,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:50,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:20:50,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:20:50,723 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 5 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:20:50,724 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:20:50,724 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 20:20:50,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:20:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:20:50,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:20:51,006 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 20:20:51,276 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-23 20:20:51,657 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 49 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:20:51,691 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:20:51,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-10-23 20:20:51,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 20:20:51,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 20:20:51,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:20:51,694 INFO L87 Difference]: Start difference. First operand 3514 states and 5233 transitions. Second operand 8 states. [2018-10-23 20:21:41,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:21:41,751 INFO L93 Difference]: Finished difference Result 24664 states and 41815 transitions. [2018-10-23 20:21:41,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-23 20:21:41,751 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 192 [2018-10-23 20:21:41,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:21:41,857 INFO L225 Difference]: With dead ends: 24664 [2018-10-23 20:21:41,857 INFO L226 Difference]: Without dead ends: 21940 [2018-10-23 20:21:41,867 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=129, Unknown=0, NotChecked=0, Total=210 [2018-10-23 20:21:41,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21940 states. [2018-10-23 20:21:42,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21940 to 21750. [2018-10-23 20:21:42,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21750 states. [2018-10-23 20:21:42,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21750 states to 21750 states and 29105 transitions. [2018-10-23 20:21:42,325 INFO L78 Accepts]: Start accepts. Automaton has 21750 states and 29105 transitions. Word has length 192 [2018-10-23 20:21:42,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:21:42,326 INFO L481 AbstractCegarLoop]: Abstraction has 21750 states and 29105 transitions. [2018-10-23 20:21:42,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 20:21:42,327 INFO L276 IsEmpty]: Start isEmpty. Operand 21750 states and 29105 transitions. [2018-10-23 20:21:42,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-23 20:21:42,344 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:21:42,345 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, 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, 1, 1] [2018-10-23 20:21:42,345 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:21:42,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:21:42,346 INFO L82 PathProgramCache]: Analyzing trace with hash -193828584, now seen corresponding path program 1 times [2018-10-23 20:21:42,346 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:21:42,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:21:42,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:42,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:21:42,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:21:42,839 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:21:42,840 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:21:42,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:21:42,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:21:42,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:21:42,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:21:42,842 INFO L87 Difference]: Start difference. First operand 21750 states and 29105 transitions. Second operand 4 states. [2018-10-23 20:21:53,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:21:53,477 INFO L93 Difference]: Finished difference Result 67967 states and 96002 transitions. [2018-10-23 20:21:53,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:21:53,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 242 [2018-10-23 20:21:53,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:21:53,607 INFO L225 Difference]: With dead ends: 67967 [2018-10-23 20:21:53,607 INFO L226 Difference]: Without dead ends: 47007 [2018-10-23 20:21:53,643 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 20:21:53,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47007 states. [2018-10-23 20:21:54,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47007 to 46974. [2018-10-23 20:21:54,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46974 states. [2018-10-23 20:21:54,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46974 states to 46974 states and 61872 transitions. [2018-10-23 20:21:54,407 INFO L78 Accepts]: Start accepts. Automaton has 46974 states and 61872 transitions. Word has length 242 [2018-10-23 20:21:54,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:21:54,408 INFO L481 AbstractCegarLoop]: Abstraction has 46974 states and 61872 transitions. [2018-10-23 20:21:54,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:21:54,408 INFO L276 IsEmpty]: Start isEmpty. Operand 46974 states and 61872 transitions. [2018-10-23 20:21:54,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-10-23 20:21:54,415 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:21:54,416 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:21:54,416 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:21:54,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:21:54,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1980192462, now seen corresponding path program 1 times [2018-10-23 20:21:54,417 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:21:54,417 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:21:54,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:54,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:21:54,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:21:55,219 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:21:55,219 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:21:55,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:21:55,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:21:55,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:21:55,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:21:55,221 INFO L87 Difference]: Start difference. First operand 46974 states and 61872 transitions. Second operand 5 states. [2018-10-23 20:22:15,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:22:15,360 INFO L93 Difference]: Finished difference Result 126552 states and 171902 transitions. [2018-10-23 20:22:15,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:22:15,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 249 [2018-10-23 20:22:15,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:22:15,493 INFO L225 Difference]: With dead ends: 126552 [2018-10-23 20:22:15,493 INFO L226 Difference]: Without dead ends: 80368 [2018-10-23 20:22:15,557 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:22:15,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80368 states. [2018-10-23 20:22:16,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80368 to 80182. [2018-10-23 20:22:16,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80182 states. [2018-10-23 20:22:16,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80182 states to 80182 states and 105782 transitions. [2018-10-23 20:22:16,628 INFO L78 Accepts]: Start accepts. Automaton has 80182 states and 105782 transitions. Word has length 249 [2018-10-23 20:22:16,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:22:16,629 INFO L481 AbstractCegarLoop]: Abstraction has 80182 states and 105782 transitions. [2018-10-23 20:22:16,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:22:16,629 INFO L276 IsEmpty]: Start isEmpty. Operand 80182 states and 105782 transitions. [2018-10-23 20:22:16,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-10-23 20:22:16,645 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:22:16,646 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:22:16,646 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:22:16,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:22:16,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1673200853, now seen corresponding path program 1 times [2018-10-23 20:22:16,647 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:22:16,647 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:22:16,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:16,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:22:16,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:22:17,078 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 284 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2018-10-23 20:22:17,078 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:22:17,078 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 20:22:17,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:22:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:22:17,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:22:17,296 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 355 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-10-23 20:22:17,327 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:22:17,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 20:22:17,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:22:17,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:22:17,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:22:17,329 INFO L87 Difference]: Start difference. First operand 80182 states and 105782 transitions. Second operand 4 states. [2018-10-23 20:22:31,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:22:31,013 INFO L93 Difference]: Finished difference Result 251100 states and 333661 transitions. [2018-10-23 20:22:31,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:22:31,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 321 [2018-10-23 20:22:31,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:22:31,256 INFO L225 Difference]: With dead ends: 251100 [2018-10-23 20:22:31,256 INFO L226 Difference]: Without dead ends: 164606 [2018-10-23 20:22:31,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:22:31,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164606 states. [2018-10-23 20:22:32,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164606 to 134539. [2018-10-23 20:22:32,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134539 states. [2018-10-23 20:22:33,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134539 states to 134539 states and 164715 transitions. [2018-10-23 20:22:33,092 INFO L78 Accepts]: Start accepts. Automaton has 134539 states and 164715 transitions. Word has length 321 [2018-10-23 20:22:33,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:22:33,093 INFO L481 AbstractCegarLoop]: Abstraction has 134539 states and 164715 transitions. [2018-10-23 20:22:33,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:22:33,093 INFO L276 IsEmpty]: Start isEmpty. Operand 134539 states and 164715 transitions. [2018-10-23 20:22:33,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-10-23 20:22:33,110 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:22:33,111 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, 4, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:22:33,111 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:22:33,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:22:33,111 INFO L82 PathProgramCache]: Analyzing trace with hash -2141042562, now seen corresponding path program 1 times [2018-10-23 20:22:33,111 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:22:33,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:22:33,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:33,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:22:33,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:22:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2018-10-23 20:22:34,045 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:22:34,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 20:22:34,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:22:34,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:22:34,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:22:34,046 INFO L87 Difference]: Start difference. First operand 134539 states and 164715 transitions. Second operand 3 states. [2018-10-23 20:22:41,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:22:41,596 INFO L93 Difference]: Finished difference Result 348658 states and 428063 transitions. [2018-10-23 20:22:41,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:22:41,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 339 [2018-10-23 20:22:41,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:22:41,825 INFO L225 Difference]: With dead ends: 348658 [2018-10-23 20:22:41,825 INFO L226 Difference]: Without dead ends: 204640 [2018-10-23 20:22:41,907 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 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 20:22:42,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204640 states. [2018-10-23 20:22:44,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204640 to 198320. [2018-10-23 20:22:44,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198320 states. [2018-10-23 20:22:44,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198320 states to 198320 states and 230025 transitions. [2018-10-23 20:22:44,490 INFO L78 Accepts]: Start accepts. Automaton has 198320 states and 230025 transitions. Word has length 339 [2018-10-23 20:22:44,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:22:44,490 INFO L481 AbstractCegarLoop]: Abstraction has 198320 states and 230025 transitions. [2018-10-23 20:22:44,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:22:44,491 INFO L276 IsEmpty]: Start isEmpty. Operand 198320 states and 230025 transitions. [2018-10-23 20:22:44,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2018-10-23 20:22:44,507 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:22:44,507 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, 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, 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] [2018-10-23 20:22:44,507 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:22:44,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:22:44,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1595785607, now seen corresponding path program 1 times [2018-10-23 20:22:44,508 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:22:44,508 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:22:44,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:44,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:22:44,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:22:44,931 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-23 20:22:45,038 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2018-10-23 20:22:45,039 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:22:45,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:22:45,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:22:45,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:22:45,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:22:45,040 INFO L87 Difference]: Start difference. First operand 198320 states and 230025 transitions. Second operand 4 states. [2018-10-23 20:22:57,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:22:57,283 INFO L93 Difference]: Finished difference Result 483361 states and 560533 transitions. [2018-10-23 20:22:57,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:22:57,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 456 [2018-10-23 20:22:57,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:22:57,632 INFO L225 Difference]: With dead ends: 483361 [2018-10-23 20:22:57,632 INFO L226 Difference]: Without dead ends: 277147 [2018-10-23 20:22:57,745 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 20:22:57,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277147 states. [2018-10-23 20:23:00,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277147 to 270794. [2018-10-23 20:23:00,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270794 states. [2018-10-23 20:23:01,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270794 states to 270794 states and 305215 transitions. [2018-10-23 20:23:01,245 INFO L78 Accepts]: Start accepts. Automaton has 270794 states and 305215 transitions. Word has length 456 [2018-10-23 20:23:01,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:23:01,246 INFO L481 AbstractCegarLoop]: Abstraction has 270794 states and 305215 transitions. [2018-10-23 20:23:01,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:23:01,246 INFO L276 IsEmpty]: Start isEmpty. Operand 270794 states and 305215 transitions. [2018-10-23 20:23:01,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2018-10-23 20:23:01,285 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:23:01,285 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, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 20:23:01,286 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:23:01,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:23:01,286 INFO L82 PathProgramCache]: Analyzing trace with hash 463677000, now seen corresponding path program 1 times [2018-10-23 20:23:01,286 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:23:01,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:23:01,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:23:01,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:23:01,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:23:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:23:01,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 583 proven. 5 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2018-10-23 20:23:01,855 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:23:01,855 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 20:23:01,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:23:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:23:01,999 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:23:02,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 583 proven. 0 refuted. 0 times theorem prover too weak. 503 trivial. 0 not checked. [2018-10-23 20:23:02,289 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:23:02,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-23 20:23:02,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:23:02,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:23:02,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:23:02,291 INFO L87 Difference]: Start difference. First operand 270794 states and 305215 transitions. Second operand 5 states. [2018-10-23 20:23:14,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:23:14,424 INFO L93 Difference]: Finished difference Result 539181 states and 607579 transitions. [2018-10-23 20:23:14,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:23:14,425 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 529 [2018-10-23 20:23:14,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:23:14,740 INFO L225 Difference]: With dead ends: 539181 [2018-10-23 20:23:14,740 INFO L226 Difference]: Without dead ends: 269177 [2018-10-23 20:23:16,505 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 531 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:23:16,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269177 states. [2018-10-23 20:23:19,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269177 to 254989. [2018-10-23 20:23:19,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254989 states. [2018-10-23 20:23:19,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254989 states to 254989 states and 276376 transitions. [2018-10-23 20:23:19,852 INFO L78 Accepts]: Start accepts. Automaton has 254989 states and 276376 transitions. Word has length 529 [2018-10-23 20:23:19,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:23:19,853 INFO L481 AbstractCegarLoop]: Abstraction has 254989 states and 276376 transitions. [2018-10-23 20:23:19,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:23:19,853 INFO L276 IsEmpty]: Start isEmpty. Operand 254989 states and 276376 transitions. [2018-10-23 20:23:19,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2018-10-23 20:23:19,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:23:19,937 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, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:19,937 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:23:19,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:23:19,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1251739296, now seen corresponding path program 1 times [2018-10-23 20:23:19,938 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:23:19,938 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:23:19,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:23:19,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:23:19,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:23:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:23:27,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1598 backedges. 831 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2018-10-23 20:23:27,039 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:23:27,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:23:27,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:23:27,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:23:27,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:23:27,040 INFO L87 Difference]: Start difference. First operand 254989 states and 276376 transitions. Second operand 3 states. [2018-10-23 20:23:34,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:23:34,853 INFO L93 Difference]: Finished difference Result 539918 states and 586232 transitions. [2018-10-23 20:23:34,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:23:34,853 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 772 [2018-10-23 20:23:34,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:23:35,202 INFO L225 Difference]: With dead ends: 539918 [2018-10-23 20:23:35,202 INFO L226 Difference]: Without dead ends: 285719 [2018-10-23 20:23:35,308 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 20:23:35,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285719 states. [2018-10-23 20:23:38,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285719 to 284142. [2018-10-23 20:23:38,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284142 states. [2018-10-23 20:23:39,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284142 states to 284142 states and 306468 transitions. [2018-10-23 20:23:39,002 INFO L78 Accepts]: Start accepts. Automaton has 284142 states and 306468 transitions. Word has length 772 [2018-10-23 20:23:39,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:23:39,003 INFO L481 AbstractCegarLoop]: Abstraction has 284142 states and 306468 transitions. [2018-10-23 20:23:39,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:23:39,003 INFO L276 IsEmpty]: Start isEmpty. Operand 284142 states and 306468 transitions. [2018-10-23 20:23:39,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 922 [2018-10-23 20:23:39,094 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:23:39,095 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, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:39,095 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:23:39,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:23:39,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1878009245, now seen corresponding path program 1 times [2018-10-23 20:23:39,096 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:23:39,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:23:39,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:23:39,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:23:39,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:23:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:23:40,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 828 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-10-23 20:23:40,369 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:23:40,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:23:40,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:23:40,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:23:40,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:23:40,371 INFO L87 Difference]: Start difference. First operand 284142 states and 306468 transitions. Second operand 4 states. [2018-10-23 20:23:50,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:23:50,872 INFO L93 Difference]: Finished difference Result 567511 states and 612127 transitions. [2018-10-23 20:23:50,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:23:50,873 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 921 [2018-10-23 20:23:50,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:23:51,167 INFO L225 Difference]: With dead ends: 567511 [2018-10-23 20:23:51,167 INFO L226 Difference]: Without dead ends: 275468 [2018-10-23 20:23:51,251 INFO L605 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 [2018-10-23 20:23:51,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275468 states. [2018-10-23 20:23:53,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275468 to 273866. [2018-10-23 20:23:53,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273866 states. [2018-10-23 20:23:55,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273866 states to 273866 states and 290295 transitions. [2018-10-23 20:23:55,267 INFO L78 Accepts]: Start accepts. Automaton has 273866 states and 290295 transitions. Word has length 921 [2018-10-23 20:23:55,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:23:55,268 INFO L481 AbstractCegarLoop]: Abstraction has 273866 states and 290295 transitions. [2018-10-23 20:23:55,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:23:55,268 INFO L276 IsEmpty]: Start isEmpty. Operand 273866 states and 290295 transitions. [2018-10-23 20:23:55,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1043 [2018-10-23 20:23:55,362 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:23:55,363 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:55,363 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:23:55,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:23:55,364 INFO L82 PathProgramCache]: Analyzing trace with hash 429967359, now seen corresponding path program 1 times [2018-10-23 20:23:55,364 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:23:55,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:23:55,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:23:55,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:23:55,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:23:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-23 20:24:01,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1367 backedges. 448 proven. 644 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-23 20:24:01,820 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:24:01,820 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:24:01,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:24:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:24:02,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:24:02,114 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-23 20:24:02,318 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:24:02,319 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:24:02,325 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:24:02,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:24:02 BoogieIcfgContainer [2018-10-23 20:24:02,325 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:24:02,326 INFO L168 Benchmark]: Toolchain (without parser) took 230807.58 ms. Allocated memory was 1.5 GB in the beginning and 5.1 GB in the end (delta: 3.5 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-23 20:24:02,327 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 20:24:02,328 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2662.43 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 20:24:02,329 INFO L168 Benchmark]: Boogie Procedure Inliner took 856.03 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 824.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2018-10-23 20:24:02,330 INFO L168 Benchmark]: Boogie Preprocessor took 503.25 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 64.3 MB). Peak memory consumption was 64.3 MB. Max. memory is 7.1 GB. [2018-10-23 20:24:02,331 INFO L168 Benchmark]: RCFGBuilder took 12740.52 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 255.3 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 3.7 MB). Peak memory consumption was 626.4 MB. Max. memory is 7.1 GB. [2018-10-23 20:24:02,332 INFO L168 Benchmark]: TraceAbstraction took 214040.03 ms. Allocated memory was 2.6 GB in the beginning and 5.1 GB in the end (delta: 2.5 GB). Free memory was 2.1 GB in the beginning and 3.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-23 20:24:02,341 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 2662.43 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 856.03 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 824.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 503.25 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 64.3 MB). Peak memory consumption was 64.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12740.52 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 255.3 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 3.7 MB). Peak memory consumption was 626.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214040.03 ms. Allocated memory was 2.6 GB in the beginning and 5.1 GB in the end (delta: 2.5 GB). Free memory was 2.1 GB in the beginning and 3.2 GB in the end (delta: -1.1 GB). 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: 207]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 207). Cancelled while BasicCegarLoop was analyzing trace of length 1043 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 213.9s OverallTime, 11 OverallIterations, 7 TraceHistogramMax, 169.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8591 SDtfs, 32349 SDslu, 2822 SDs, 0 SdLazy, 66239 SolverSat, 17429 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 134.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1095 GetRequests, 1052 SyntacticMatches, 10 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=284142occurred in iteration=9, 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: 21.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 60517 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 5129 NumberOfCodeBlocks, 5129 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 5116 ConstructedInterpolants, 0 QuantifiedInterpolants, 5016680 SizeOfPredicates, 7 NumberOfNonLiveVariables, 1419 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 PerfectInterpolantSequences, 7419/7500 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown