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/Problem16_label31_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:25:24,595 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:25:24,597 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:25:24,618 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:25:24,618 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:25:24,619 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:25:24,621 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:25:24,622 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:25:24,624 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:25:24,625 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:25:24,626 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:25:24,626 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:25:24,627 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:25:24,628 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:25:24,629 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:25:24,630 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:25:24,631 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:25:24,633 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:25:24,635 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:25:24,637 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:25:24,638 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:25:24,639 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:25:24,642 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:25:24,642 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:25:24,642 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:25:24,643 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:25:24,646 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:25:24,650 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:25:24,651 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:25:24,653 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:25:24,653 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:25:24,655 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 14:25:24,658 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 14:25:24,689 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:25:24,689 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:25:24,690 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:25:24,690 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:25:24,691 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:25:24,695 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:25:24,695 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:25:24,695 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:25:24,696 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:25:24,696 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:25:24,696 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:25:24,696 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:25:24,696 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:25:24,696 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:25:24,697 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:25:24,697 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:25:24,697 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:25:24,698 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:25:24,698 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:25:24,698 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:25:24,698 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:25:24,698 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:25:24,699 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:25:24,699 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:25:24,699 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:25:24,699 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:25:24,699 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:25:24,699 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:25:24,771 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:25:24,785 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:25:24,789 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:25:24,791 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:25:24,791 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:25:24,792 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label31_false-unreach-call.c [2018-10-24 14:25:24,858 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1549e3e67/01227ee01ce84668842f872224f63cf1/FLAG1f496c1a1 [2018-10-24 14:25:25,480 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:25:25,481 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label31_false-unreach-call.c [2018-10-24 14:25:25,502 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1549e3e67/01227ee01ce84668842f872224f63cf1/FLAG1f496c1a1 [2018-10-24 14:25:25,521 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1549e3e67/01227ee01ce84668842f872224f63cf1 [2018-10-24 14:25:25,533 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:25:25,535 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:25:25,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:25:25,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:25:25,541 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:25:25,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:25:25" (1/1) ... [2018-10-24 14:25:25,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@769766bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:25, skipping insertion in model container [2018-10-24 14:25:25,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:25:25" (1/1) ... [2018-10-24 14:25:25,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:25:25,654 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:25:26,397 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:25:26,402 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:25:26,693 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:25:26,714 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:25:26,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:26 WrapperNode [2018-10-24 14:25:26,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:25:26,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:25:26,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:25:26,716 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:25:26,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:26" (1/1) ... [2018-10-24 14:25:26,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:26" (1/1) ... [2018-10-24 14:25:27,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:25:27,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:25:27,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:25:27,050 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:25:27,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:26" (1/1) ... [2018-10-24 14:25:27,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:26" (1/1) ... [2018-10-24 14:25:27,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:26" (1/1) ... [2018-10-24 14:25:27,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:26" (1/1) ... [2018-10-24 14:25:27,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:26" (1/1) ... [2018-10-24 14:25:27,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:26" (1/1) ... [2018-10-24 14:25:27,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:26" (1/1) ... [2018-10-24 14:25:27,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:25:27,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:25:27,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:25:27,197 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:25:27,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:25:27,263 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:25:27,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:25:27,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:25:34,118 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:25:34,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:25:34 BoogieIcfgContainer [2018-10-24 14:25:34,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:25:34,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:25:34,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:25:34,126 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:25:34,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:25:25" (1/3) ... [2018-10-24 14:25:34,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@178c1f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:25:34, skipping insertion in model container [2018-10-24 14:25:34,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:26" (2/3) ... [2018-10-24 14:25:34,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@178c1f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:25:34, skipping insertion in model container [2018-10-24 14:25:34,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:25:34" (3/3) ... [2018-10-24 14:25:34,131 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label31_false-unreach-call.c [2018-10-24 14:25:34,143 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:25:34,155 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:25:34,175 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:25:34,227 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:25:34,227 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:25:34,228 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:25:34,228 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:25:34,228 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:25:34,228 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:25:34,228 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:25:34,228 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:25:34,229 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:25:34,266 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states. [2018-10-24 14:25:34,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-24 14:25:34,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:25:34,281 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:25:34,285 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:25:34,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:25:34,293 INFO L82 PathProgramCache]: Analyzing trace with hash 384191218, now seen corresponding path program 1 times [2018-10-24 14:25:34,295 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:25:34,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:25:34,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:25:34,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:25:34,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:25:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:25:34,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:25:34,520 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:25:34,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 14:25:34,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:25:34,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:25:34,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:25:34,544 INFO L87 Difference]: Start difference. First operand 397 states. Second operand 3 states. [2018-10-24 14:25:37,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:25:37,891 INFO L93 Difference]: Finished difference Result 1125 states and 2106 transitions. [2018-10-24 14:25:37,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:25:37,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-10-24 14:25:37,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:25:37,917 INFO L225 Difference]: With dead ends: 1125 [2018-10-24 14:25:37,917 INFO L226 Difference]: Without dead ends: 724 [2018-10-24 14:25:37,923 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:25:37,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2018-10-24 14:25:38,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 724. [2018-10-24 14:25:38,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2018-10-24 14:25:38,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1169 transitions. [2018-10-24 14:25:38,036 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1169 transitions. Word has length 9 [2018-10-24 14:25:38,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:25:38,036 INFO L481 AbstractCegarLoop]: Abstraction has 724 states and 1169 transitions. [2018-10-24 14:25:38,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:25:38,036 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1169 transitions. [2018-10-24 14:25:38,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-24 14:25:38,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:25:38,039 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:25:38,040 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:25:38,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:25:38,040 INFO L82 PathProgramCache]: Analyzing trace with hash 615134042, now seen corresponding path program 1 times [2018-10-24 14:25:38,040 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:25:38,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:25:38,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:25:38,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:25:38,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:25:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:25:38,336 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:25:38,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:25:38,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:25:38,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:25:38,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:25:38,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:25:38,340 INFO L87 Difference]: Start difference. First operand 724 states and 1169 transitions. Second operand 4 states. [2018-10-24 14:25:44,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:25:44,913 INFO L93 Difference]: Finished difference Result 2781 states and 4563 transitions. [2018-10-24 14:25:44,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:25:44,914 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2018-10-24 14:25:44,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:25:44,927 INFO L225 Difference]: With dead ends: 2781 [2018-10-24 14:25:44,927 INFO L226 Difference]: Without dead ends: 2059 [2018-10-24 14:25:44,930 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:25:44,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2018-10-24 14:25:44,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 1384. [2018-10-24 14:25:44,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1384 states. [2018-10-24 14:25:44,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2143 transitions. [2018-10-24 14:25:44,976 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2143 transitions. Word has length 81 [2018-10-24 14:25:44,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:25:44,977 INFO L481 AbstractCegarLoop]: Abstraction has 1384 states and 2143 transitions. [2018-10-24 14:25:44,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:25:44,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2143 transitions. [2018-10-24 14:25:44,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-24 14:25:44,981 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:25:44,982 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:25:44,982 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:25:44,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:25:44,982 INFO L82 PathProgramCache]: Analyzing trace with hash 641546084, now seen corresponding path program 1 times [2018-10-24 14:25:44,982 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:25:44,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:25:44,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:25:44,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:25:44,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:25:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:25:45,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:25:45,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:25:45,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:25:45,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:25:45,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:25:45,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:25:45,255 INFO L87 Difference]: Start difference. First operand 1384 states and 2143 transitions. Second operand 4 states. [2018-10-24 14:25:55,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:25:55,593 INFO L93 Difference]: Finished difference Result 3756 states and 5709 transitions. [2018-10-24 14:25:55,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:25:55,594 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2018-10-24 14:25:55,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:25:55,607 INFO L225 Difference]: With dead ends: 3756 [2018-10-24 14:25:55,608 INFO L226 Difference]: Without dead ends: 2374 [2018-10-24 14:25:55,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:25:55,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2018-10-24 14:25:55,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 2374. [2018-10-24 14:25:55,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2374 states. [2018-10-24 14:25:55,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3352 transitions. [2018-10-24 14:25:55,668 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3352 transitions. Word has length 85 [2018-10-24 14:25:55,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:25:55,668 INFO L481 AbstractCegarLoop]: Abstraction has 2374 states and 3352 transitions. [2018-10-24 14:25:55,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:25:55,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3352 transitions. [2018-10-24 14:25:55,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-24 14:25:55,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:25:55,672 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:25:55,672 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:25:55,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:25:55,673 INFO L82 PathProgramCache]: Analyzing trace with hash -204332158, now seen corresponding path program 1 times [2018-10-24 14:25:55,673 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:25:55,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:25:55,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:25:55,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:25:55,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:25:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:25:55,861 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:25:55,862 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:25:55,863 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:25:55,863 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:25:55,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:25:55,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:25:55,864 INFO L87 Difference]: Start difference. First operand 2374 states and 3352 transitions. Second operand 4 states. [2018-10-24 14:25:58,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:25:58,144 INFO L93 Difference]: Finished difference Result 5406 states and 7808 transitions. [2018-10-24 14:25:58,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:25:58,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2018-10-24 14:25:58,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:25:58,161 INFO L225 Difference]: With dead ends: 5406 [2018-10-24 14:25:58,161 INFO L226 Difference]: Without dead ends: 3034 [2018-10-24 14:25:58,165 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:25:58,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3034 states. [2018-10-24 14:25:58,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3034 to 2704. [2018-10-24 14:25:58,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2704 states. [2018-10-24 14:25:58,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2704 states to 2704 states and 3597 transitions. [2018-10-24 14:25:58,214 INFO L78 Accepts]: Start accepts. Automaton has 2704 states and 3597 transitions. Word has length 97 [2018-10-24 14:25:58,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:25:58,215 INFO L481 AbstractCegarLoop]: Abstraction has 2704 states and 3597 transitions. [2018-10-24 14:25:58,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:25:58,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2704 states and 3597 transitions. [2018-10-24 14:25:58,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-24 14:25:58,220 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:25:58,221 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:25:58,221 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:25:58,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:25:58,221 INFO L82 PathProgramCache]: Analyzing trace with hash -325996249, now seen corresponding path program 1 times [2018-10-24 14:25:58,222 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:25:58,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:25:58,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:25:58,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:25:58,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:25:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:25:58,519 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-10-24 14:25:58,520 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:25:58,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 14:25:58,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:25:58,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:25:58,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:25:58,521 INFO L87 Difference]: Start difference. First operand 2704 states and 3597 transitions. Second operand 3 states. [2018-10-24 14:26:00,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:26:00,794 INFO L93 Difference]: Finished difference Result 6726 states and 9102 transitions. [2018-10-24 14:26:00,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:26:00,794 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2018-10-24 14:26:00,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:26:00,810 INFO L225 Difference]: With dead ends: 6726 [2018-10-24 14:26:00,810 INFO L226 Difference]: Without dead ends: 3344 [2018-10-24 14:26:00,815 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 [2018-10-24 14:26:00,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3344 states. [2018-10-24 14:26:00,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3344 to 3344. [2018-10-24 14:26:00,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3344 states. [2018-10-24 14:26:00,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 3748 transitions. [2018-10-24 14:26:00,874 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 3748 transitions. Word has length 204 [2018-10-24 14:26:00,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:26:00,874 INFO L481 AbstractCegarLoop]: Abstraction has 3344 states and 3748 transitions. [2018-10-24 14:26:00,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:26:00,875 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 3748 transitions. [2018-10-24 14:26:00,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-10-24 14:26:00,883 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:26:00,883 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-24 14:26:00,884 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:26:00,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:26:00,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1149032164, now seen corresponding path program 1 times [2018-10-24 14:26:00,884 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:26:00,884 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:26:00,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:26:00,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:26:00,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:26:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:26:01,405 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-24 14:26:01,405 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:26:01,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:26:01,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:26:01,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:26:01,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:26:01,408 INFO L87 Difference]: Start difference. First operand 3344 states and 3748 transitions. Second operand 4 states. [2018-10-24 14:26:03,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:26:03,883 INFO L93 Difference]: Finished difference Result 12956 states and 14457 transitions. [2018-10-24 14:26:03,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:26:03,886 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 354 [2018-10-24 14:26:03,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:26:03,926 INFO L225 Difference]: With dead ends: 12956 [2018-10-24 14:26:03,926 INFO L226 Difference]: Without dead ends: 9614 [2018-10-24 14:26:03,933 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:26:03,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9614 states. [2018-10-24 14:26:04,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9614 to 8624. [2018-10-24 14:26:04,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8624 states. [2018-10-24 14:26:04,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8624 states to 8624 states and 9307 transitions. [2018-10-24 14:26:04,094 INFO L78 Accepts]: Start accepts. Automaton has 8624 states and 9307 transitions. Word has length 354 [2018-10-24 14:26:04,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:26:04,094 INFO L481 AbstractCegarLoop]: Abstraction has 8624 states and 9307 transitions. [2018-10-24 14:26:04,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:26:04,095 INFO L276 IsEmpty]: Start isEmpty. Operand 8624 states and 9307 transitions. [2018-10-24 14:26:04,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2018-10-24 14:26:04,107 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:26:04,107 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:26:04,107 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:26:04,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:26:04,108 INFO L82 PathProgramCache]: Analyzing trace with hash -629323007, now seen corresponding path program 1 times [2018-10-24 14:26:04,108 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:26:04,108 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:26:04,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:26:04,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:26:04,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:26:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:26:04,585 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-10-24 14:26:04,586 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:26:04,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:26:04,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:26:04,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:26:04,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:26:04,587 INFO L87 Difference]: Start difference. First operand 8624 states and 9307 transitions. Second operand 4 states. [2018-10-24 14:26:06,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:26:06,704 INFO L93 Difference]: Finished difference Result 23516 states and 25569 transitions. [2018-10-24 14:26:06,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:26:06,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 417 [2018-10-24 14:26:06,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:26:06,748 INFO L225 Difference]: With dead ends: 23516 [2018-10-24 14:26:06,748 INFO L226 Difference]: Without dead ends: 14894 [2018-10-24 14:26:06,759 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:26:06,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14894 states. [2018-10-24 14:26:07,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14894 to 14234. [2018-10-24 14:26:07,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14234 states. [2018-10-24 14:26:07,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14234 states to 14234 states and 15276 transitions. [2018-10-24 14:26:07,084 INFO L78 Accepts]: Start accepts. Automaton has 14234 states and 15276 transitions. Word has length 417 [2018-10-24 14:26:07,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:26:07,085 INFO L481 AbstractCegarLoop]: Abstraction has 14234 states and 15276 transitions. [2018-10-24 14:26:07,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:26:07,085 INFO L276 IsEmpty]: Start isEmpty. Operand 14234 states and 15276 transitions. [2018-10-24 14:26:07,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 969 [2018-10-24 14:26:07,131 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:26:07,131 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:26:07,132 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:26:07,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:26:07,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1975205529, now seen corresponding path program 1 times [2018-10-24 14:26:07,132 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:26:07,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:26:07,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:26:07,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:26:07,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:26:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:26:07,653 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-24 14:26:07,809 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2018-10-24 14:26:07,930 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 19 [2018-10-24 14:26:09,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1343 backedges. 687 proven. 0 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2018-10-24 14:26:09,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:26:09,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 14:26:09,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:26:09,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:26:09,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:26:09,441 INFO L87 Difference]: Start difference. First operand 14234 states and 15276 transitions. Second operand 7 states. [2018-10-24 14:26:14,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:26:14,830 INFO L93 Difference]: Finished difference Result 28803 states and 30891 transitions. [2018-10-24 14:26:14,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:26:14,831 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 968 [2018-10-24 14:26:14,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:26:14,857 INFO L225 Difference]: With dead ends: 28803 [2018-10-24 14:26:14,857 INFO L226 Difference]: Without dead ends: 14571 [2018-10-24 14:26:14,869 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-24 14:26:14,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14571 states. [2018-10-24 14:26:15,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14571 to 14564. [2018-10-24 14:26:15,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14564 states. [2018-10-24 14:26:15,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14564 states to 14564 states and 15608 transitions. [2018-10-24 14:26:15,029 INFO L78 Accepts]: Start accepts. Automaton has 14564 states and 15608 transitions. Word has length 968 [2018-10-24 14:26:15,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:26:15,030 INFO L481 AbstractCegarLoop]: Abstraction has 14564 states and 15608 transitions. [2018-10-24 14:26:15,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:26:15,030 INFO L276 IsEmpty]: Start isEmpty. Operand 14564 states and 15608 transitions. [2018-10-24 14:26:15,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1085 [2018-10-24 14:26:15,097 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:26:15,098 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:26:15,098 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:26:15,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:26:15,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1693196803, now seen corresponding path program 1 times [2018-10-24 14:26:15,099 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:26:15,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:26:15,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:26:15,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:26:15,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:26:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:26:15,816 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-10-24 14:26:16,119 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-10-24 14:26:16,461 WARN L179 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-10-24 14:26:17,012 WARN L179 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 13 [2018-10-24 14:26:18,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1833 backedges. 1172 proven. 5 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2018-10-24 14:26:18,817 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:26:18,817 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:26:18,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:26:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:26:19,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:26:20,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1833 backedges. 1126 proven. 0 refuted. 0 times theorem prover too weak. 707 trivial. 0 not checked. [2018-10-24 14:26:20,055 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:26:20,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-10-24 14:26:20,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 14:26:20,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 14:26:20,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 14:26:20,060 INFO L87 Difference]: Start difference. First operand 14564 states and 15608 transitions. Second operand 8 states. [2018-10-24 14:26:36,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:26:36,943 INFO L93 Difference]: Finished difference Result 41014 states and 44094 transitions. [2018-10-24 14:26:36,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 14:26:36,944 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1084 [2018-10-24 14:26:36,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:26:36,985 INFO L225 Difference]: With dead ends: 41014 [2018-10-24 14:26:36,985 INFO L226 Difference]: Without dead ends: 26782 [2018-10-24 14:26:36,998 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1108 GetRequests, 1092 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2018-10-24 14:26:37,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26782 states. [2018-10-24 14:26:37,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26782 to 22484. [2018-10-24 14:26:37,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22484 states. [2018-10-24 14:26:37,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22484 states to 22484 states and 23599 transitions. [2018-10-24 14:26:37,370 INFO L78 Accepts]: Start accepts. Automaton has 22484 states and 23599 transitions. Word has length 1084 [2018-10-24 14:26:37,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:26:37,371 INFO L481 AbstractCegarLoop]: Abstraction has 22484 states and 23599 transitions. [2018-10-24 14:26:37,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 14:26:37,372 INFO L276 IsEmpty]: Start isEmpty. Operand 22484 states and 23599 transitions. [2018-10-24 14:26:37,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1600 [2018-10-24 14:26:37,418 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:26:37,419 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:26:37,419 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:26:37,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:26:37,420 INFO L82 PathProgramCache]: Analyzing trace with hash -951319566, now seen corresponding path program 1 times [2018-10-24 14:26:37,420 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:26:37,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:26:37,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:26:37,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:26:37,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:26:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:26:39,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4189 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 4133 trivial. 0 not checked. [2018-10-24 14:26:39,603 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:26:39,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:26:39,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:26:39,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:26:39,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:26:39,604 INFO L87 Difference]: Start difference. First operand 22484 states and 23599 transitions. Second operand 3 states. [2018-10-24 14:26:41,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:26:41,142 INFO L93 Difference]: Finished difference Result 51895 states and 54507 transitions. [2018-10-24 14:26:41,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:26:41,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1599 [2018-10-24 14:26:41,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:26:41,183 INFO L225 Difference]: With dead ends: 51895 [2018-10-24 14:26:41,183 INFO L226 Difference]: Without dead ends: 23123 [2018-10-24 14:26:41,210 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 [2018-10-24 14:26:41,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23123 states. [2018-10-24 14:26:41,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23123 to 23123. [2018-10-24 14:26:41,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23123 states. [2018-10-24 14:26:41,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23123 states to 23123 states and 24062 transitions. [2018-10-24 14:26:41,529 INFO L78 Accepts]: Start accepts. Automaton has 23123 states and 24062 transitions. Word has length 1599 [2018-10-24 14:26:41,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:26:41,531 INFO L481 AbstractCegarLoop]: Abstraction has 23123 states and 24062 transitions. [2018-10-24 14:26:41,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:26:41,531 INFO L276 IsEmpty]: Start isEmpty. Operand 23123 states and 24062 transitions. [2018-10-24 14:26:41,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1816 [2018-10-24 14:26:41,608 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:26:41,610 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:26:41,610 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:26:41,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:26:41,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1095584850, now seen corresponding path program 1 times [2018-10-24 14:26:41,612 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:26:41,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:26:41,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:26:41,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:26:41,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:26:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:26:43,430 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 14:26:43,771 WARN L179 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-10-24 14:26:43,964 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 15 [2018-10-24 14:26:47,657 INFO L134 CoverageAnalysis]: Checked inductivity of 5564 backedges. 2486 proven. 2627 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2018-10-24 14:26:47,658 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:26:47,658 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:26:47,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:26:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:26:48,071 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:26:48,620 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 15 [2018-10-24 14:26:50,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5564 backedges. 4090 proven. 148 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2018-10-24 14:26:50,878 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:26:50,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 14 [2018-10-24 14:26:50,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 14:26:50,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 14:26:50,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-10-24 14:26:50,881 INFO L87 Difference]: Start difference. First operand 23123 states and 24062 transitions. Second operand 14 states. [2018-10-24 14:27:10,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:27:10,221 INFO L93 Difference]: Finished difference Result 47115 states and 49000 transitions. [2018-10-24 14:27:10,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-24 14:27:10,232 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1815 [2018-10-24 14:27:10,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:27:10,258 INFO L225 Difference]: With dead ends: 47115 [2018-10-24 14:27:10,258 INFO L226 Difference]: Without dead ends: 24324 [2018-10-24 14:27:10,274 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1852 GetRequests, 1822 SyntacticMatches, 10 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2018-10-24 14:27:10,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24324 states. [2018-10-24 14:27:10,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24324 to 23098. [2018-10-24 14:27:10,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23098 states. [2018-10-24 14:27:10,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23098 states to 23098 states and 23586 transitions. [2018-10-24 14:27:10,530 INFO L78 Accepts]: Start accepts. Automaton has 23098 states and 23586 transitions. Word has length 1815 [2018-10-24 14:27:10,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:27:10,531 INFO L481 AbstractCegarLoop]: Abstraction has 23098 states and 23586 transitions. [2018-10-24 14:27:10,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-24 14:27:10,532 INFO L276 IsEmpty]: Start isEmpty. Operand 23098 states and 23586 transitions. [2018-10-24 14:27:10,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1820 [2018-10-24 14:27:10,576 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:27:10,577 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 7, 7, 7, 7, 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, 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, 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] [2018-10-24 14:27:10,578 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:27:10,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:27:10,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1356241662, now seen corresponding path program 1 times [2018-10-24 14:27:10,579 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:27:10,579 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:27:10,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:27:10,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:27:10,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:27:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:27:14,703 INFO L134 CoverageAnalysis]: Checked inductivity of 5524 backedges. 3838 proven. 0 refuted. 0 times theorem prover too weak. 1686 trivial. 0 not checked. [2018-10-24 14:27:14,704 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:27:14,704 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 14:27:14,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:27:14,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:27:14,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:27:14,705 INFO L87 Difference]: Start difference. First operand 23098 states and 23586 transitions. Second operand 5 states. [2018-10-24 14:27:17,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:27:17,520 INFO L93 Difference]: Finished difference Result 46198 states and 47176 transitions. [2018-10-24 14:27:17,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 14:27:17,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1819 [2018-10-24 14:27:17,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:27:17,541 INFO L225 Difference]: With dead ends: 46198 [2018-10-24 14:27:17,541 INFO L226 Difference]: Without dead ends: 23432 [2018-10-24 14:27:17,554 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:27:17,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23432 states. [2018-10-24 14:27:17,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23432 to 23098. [2018-10-24 14:27:17,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23098 states. [2018-10-24 14:27:17,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23098 states to 23098 states and 23584 transitions. [2018-10-24 14:27:17,923 INFO L78 Accepts]: Start accepts. Automaton has 23098 states and 23584 transitions. Word has length 1819 [2018-10-24 14:27:17,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:27:17,924 INFO L481 AbstractCegarLoop]: Abstraction has 23098 states and 23584 transitions. [2018-10-24 14:27:17,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:27:17,924 INFO L276 IsEmpty]: Start isEmpty. Operand 23098 states and 23584 transitions. [2018-10-24 14:27:17,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2078 [2018-10-24 14:27:17,962 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:27:17,963 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:27:17,963 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:27:17,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:27:17,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1027384783, now seen corresponding path program 1 times [2018-10-24 14:27:17,964 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:27:17,964 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:27:17,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:27:17,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:27:17,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:27:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:27:19,300 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 14:27:19,467 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 14:27:19,925 WARN L179 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2018-10-24 14:27:24,765 INFO L134 CoverageAnalysis]: Checked inductivity of 7314 backedges. 3428 proven. 251 refuted. 0 times theorem prover too weak. 3635 trivial. 0 not checked. [2018-10-24 14:27:24,765 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:27:24,765 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:27:24,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:27:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:27:25,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:27:27,646 INFO L134 CoverageAnalysis]: Checked inductivity of 7314 backedges. 4468 proven. 0 refuted. 0 times theorem prover too weak. 2846 trivial. 0 not checked. [2018-10-24 14:27:27,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:27:27,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2018-10-24 14:27:27,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 14:27:27,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 14:27:27,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-10-24 14:27:27,671 INFO L87 Difference]: Start difference. First operand 23098 states and 23584 transitions. Second operand 10 states. [2018-10-24 14:27:37,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:27:37,062 INFO L93 Difference]: Finished difference Result 48023 states and 49035 transitions. [2018-10-24 14:27:37,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-24 14:27:37,062 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 2077 [2018-10-24 14:27:37,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:27:37,078 INFO L225 Difference]: With dead ends: 48023 [2018-10-24 14:27:37,079 INFO L226 Difference]: Without dead ends: 19213 [2018-10-24 14:27:37,094 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2102 GetRequests, 2082 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2018-10-24 14:27:37,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19213 states. [2018-10-24 14:27:37,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19213 to 17754. [2018-10-24 14:27:37,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17754 states. [2018-10-24 14:27:37,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17754 states to 17754 states and 18025 transitions. [2018-10-24 14:27:37,292 INFO L78 Accepts]: Start accepts. Automaton has 17754 states and 18025 transitions. Word has length 2077 [2018-10-24 14:27:37,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:27:37,293 INFO L481 AbstractCegarLoop]: Abstraction has 17754 states and 18025 transitions. [2018-10-24 14:27:37,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 14:27:37,293 INFO L276 IsEmpty]: Start isEmpty. Operand 17754 states and 18025 transitions. [2018-10-24 14:27:37,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2395 [2018-10-24 14:27:37,345 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:27:37,346 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:27:37,346 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:27:37,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:27:37,347 INFO L82 PathProgramCache]: Analyzing trace with hash -995315851, now seen corresponding path program 1 times [2018-10-24 14:27:37,347 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:27:37,347 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:27:37,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:27:37,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:27:37,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:27:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:27:38,753 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 14:27:39,153 WARN L179 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2018-10-24 14:27:43,258 INFO L134 CoverageAnalysis]: Checked inductivity of 10376 backedges. 5716 proven. 2069 refuted. 0 times theorem prover too weak. 2591 trivial. 0 not checked. [2018-10-24 14:27:43,259 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:27:43,259 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:27:43,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:27:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:27:43,871 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:27:46,898 INFO L134 CoverageAnalysis]: Checked inductivity of 10376 backedges. 5851 proven. 0 refuted. 0 times theorem prover too weak. 4525 trivial. 0 not checked. [2018-10-24 14:27:46,920 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:27:46,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2018-10-24 14:27:46,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 14:27:46,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 14:27:46,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-10-24 14:27:46,924 INFO L87 Difference]: Start difference. First operand 17754 states and 18025 transitions. Second operand 11 states. [2018-10-24 14:27:55,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:27:55,628 INFO L93 Difference]: Finished difference Result 35506 states and 36057 transitions. [2018-10-24 14:27:55,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 14:27:55,629 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 2394 [2018-10-24 14:27:55,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:27:55,647 INFO L225 Difference]: With dead ends: 35506 [2018-10-24 14:27:55,648 INFO L226 Difference]: Without dead ends: 18744 [2018-10-24 14:27:55,657 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2408 GetRequests, 2396 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-10-24 14:27:55,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18744 states. [2018-10-24 14:27:55,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18744 to 18084. [2018-10-24 14:27:55,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18084 states. [2018-10-24 14:27:55,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18084 states to 18084 states and 18345 transitions. [2018-10-24 14:27:55,811 INFO L78 Accepts]: Start accepts. Automaton has 18084 states and 18345 transitions. Word has length 2394 [2018-10-24 14:27:55,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:27:55,813 INFO L481 AbstractCegarLoop]: Abstraction has 18084 states and 18345 transitions. [2018-10-24 14:27:55,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 14:27:55,813 INFO L276 IsEmpty]: Start isEmpty. Operand 18084 states and 18345 transitions. [2018-10-24 14:27:55,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2608 [2018-10-24 14:27:55,866 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:27:55,868 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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] [2018-10-24 14:27:55,868 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:27:55,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:27:55,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1457678325, now seen corresponding path program 1 times [2018-10-24 14:27:55,869 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:27:55,869 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:27:55,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:27:55,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:27:55,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:27:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:28:02,482 INFO L134 CoverageAnalysis]: Checked inductivity of 11921 backedges. 5661 proven. 572 refuted. 0 times theorem prover too weak. 5688 trivial. 0 not checked. [2018-10-24 14:28:02,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:28:02,483 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:28:02,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:28:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:28:03,101 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:28:07,420 INFO L134 CoverageAnalysis]: Checked inductivity of 11921 backedges. 5766 proven. 467 refuted. 0 times theorem prover too weak. 5688 trivial. 0 not checked. [2018-10-24 14:28:07,453 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:28:07,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 8 [2018-10-24 14:28:07,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 14:28:07,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 14:28:07,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 14:28:07,458 INFO L87 Difference]: Start difference. First operand 18084 states and 18345 transitions. Second operand 9 states. [2018-10-24 14:28:12,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:28:12,454 INFO L93 Difference]: Finished difference Result 36543 states and 37080 transitions. [2018-10-24 14:28:12,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 14:28:12,454 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 2607 [2018-10-24 14:28:12,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:28:12,470 INFO L225 Difference]: With dead ends: 36543 [2018-10-24 14:28:12,470 INFO L226 Difference]: Without dead ends: 19451 [2018-10-24 14:28:12,479 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2620 GetRequests, 2607 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-10-24 14:28:12,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19451 states. [2018-10-24 14:28:12,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19451 to 18743. [2018-10-24 14:28:12,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18743 states. [2018-10-24 14:28:12,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18743 states to 18743 states and 18983 transitions. [2018-10-24 14:28:12,640 INFO L78 Accepts]: Start accepts. Automaton has 18743 states and 18983 transitions. Word has length 2607 [2018-10-24 14:28:12,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:28:12,641 INFO L481 AbstractCegarLoop]: Abstraction has 18743 states and 18983 transitions. [2018-10-24 14:28:12,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 14:28:12,641 INFO L276 IsEmpty]: Start isEmpty. Operand 18743 states and 18983 transitions. [2018-10-24 14:28:12,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2630 [2018-10-24 14:28:12,684 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:28:12,685 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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] [2018-10-24 14:28:12,685 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:28:12,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:28:12,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1317473214, now seen corresponding path program 1 times [2018-10-24 14:28:12,686 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:28:12,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:28:12,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:28:12,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:28:12,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:28:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:28:21,178 INFO L134 CoverageAnalysis]: Checked inductivity of 12103 backedges. 8870 proven. 985 refuted. 0 times theorem prover too weak. 2248 trivial. 0 not checked. [2018-10-24 14:28:21,178 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:28:21,178 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:28:21,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:28:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:28:21,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:28:28,577 WARN L179 SmtUtils]: Spent 6.31 s on a formula simplification. DAG size of input: 427 DAG size of output: 22 [2018-10-24 14:28:34,754 INFO L134 CoverageAnalysis]: Checked inductivity of 12103 backedges. 8095 proven. 0 refuted. 0 times theorem prover too weak. 4008 trivial. 0 not checked. [2018-10-24 14:28:34,786 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:28:34,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2018-10-24 14:28:34,790 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 14:28:34,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 14:28:34,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-10-24 14:28:34,791 INFO L87 Difference]: Start difference. First operand 18743 states and 18983 transitions. Second operand 9 states. [2018-10-24 14:28:47,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:28:47,096 INFO L93 Difference]: Finished difference Result 37484 states and 37974 transitions. [2018-10-24 14:28:47,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-24 14:28:47,097 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 2629 [2018-10-24 14:28:47,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:28:47,116 INFO L225 Difference]: With dead ends: 37484 [2018-10-24 14:28:47,116 INFO L226 Difference]: Without dead ends: 19733 [2018-10-24 14:28:47,125 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2657 GetRequests, 2636 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=162, Invalid=300, Unknown=0, NotChecked=0, Total=462 [2018-10-24 14:28:47,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19733 states. [2018-10-24 14:28:47,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19733 to 17093. [2018-10-24 14:28:47,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17093 states. [2018-10-24 14:28:47,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17093 states to 17093 states and 17297 transitions. [2018-10-24 14:28:47,281 INFO L78 Accepts]: Start accepts. Automaton has 17093 states and 17297 transitions. Word has length 2629 [2018-10-24 14:28:47,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:28:47,282 INFO L481 AbstractCegarLoop]: Abstraction has 17093 states and 17297 transitions. [2018-10-24 14:28:47,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 14:28:47,282 INFO L276 IsEmpty]: Start isEmpty. Operand 17093 states and 17297 transitions. [2018-10-24 14:28:47,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2851 [2018-10-24 14:28:47,328 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:28:47,329 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-10-24 14:28:47,330 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:28:47,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:28:47,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1320754528, now seen corresponding path program 1 times [2018-10-24 14:28:47,331 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:28:47,331 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:28:47,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:28:47,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:28:47,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:28:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:28:49,710 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 14:28:50,017 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-10-24 14:28:59,592 INFO L134 CoverageAnalysis]: Checked inductivity of 14426 backedges. 10585 proven. 1277 refuted. 0 times theorem prover too weak. 2564 trivial. 0 not checked. [2018-10-24 14:28:59,592 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:28:59,593 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:28:59,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:29:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:29:00,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:29:01,488 WARN L179 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2018-10-24 14:29:09,208 INFO L134 CoverageAnalysis]: Checked inductivity of 14426 backedges. 10799 proven. 816 refuted. 0 times theorem prover too weak. 2811 trivial. 0 not checked. [2018-10-24 14:29:09,230 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:29:09,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2018-10-24 14:29:09,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-24 14:29:09,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-24 14:29:09,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-10-24 14:29:09,234 INFO L87 Difference]: Start difference. First operand 17093 states and 17297 transitions. Second operand 13 states. Received shutdown request... [2018-10-24 14:29:13,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 14:29:13,787 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:29:13,793 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:29:13,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:29:13 BoogieIcfgContainer [2018-10-24 14:29:13,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:29:13,795 INFO L168 Benchmark]: Toolchain (without parser) took 228261.15 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 516.2 MB. Max. memory is 7.1 GB. [2018-10-24 14:29:13,796 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:29:13,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1179.26 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-24 14:29:13,797 INFO L168 Benchmark]: Boogie Procedure Inliner took 333.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -851.7 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:29:13,798 INFO L168 Benchmark]: Boogie Preprocessor took 146.46 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:29:13,798 INFO L168 Benchmark]: RCFGBuilder took 6925.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 284.6 MB). Peak memory consumption was 284.6 MB. Max. memory is 7.1 GB. [2018-10-24 14:29:13,799 INFO L168 Benchmark]: TraceAbstraction took 219671.30 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 3.5 GB in the end (delta: -1.7 GB). Peak memory consumption was 245.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:29:13,804 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1179.26 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 333.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -851.7 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 146.46 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6925.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 284.6 MB). Peak memory consumption was 284.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219671.30 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 3.5 GB in the end (delta: -1.7 GB). Peak memory consumption was 245.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 31]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 31). Cancelled while BasicCegarLoop was constructing difference of abstraction (17093states) and FLOYD_HOARE automaton (currently 10 states, 13 states before enhancement),while ReachableStatesComputation was computing reachable states (8517 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 397 locations, 1 error locations. TIMEOUT Result, 219.5s OverallTime, 17 OverallIterations, 14 TraceHistogramMax, 115.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3561 SDtfs, 21799 SDslu, 1917 SDs, 0 SdLazy, 80933 SolverSat, 4398 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 96.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15662 GetRequests, 15500 SyntacticMatches, 33 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 17.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23123occurred in iteration=10, 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: 2.9s AutomataMinimizationTime, 16 MinimizatonAttempts, 13987 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.0s SsaConstructionTime, 4.4s SatisfiabilityAnalysisTime, 54.0s InterpolantComputationTime, 36545 NumberOfCodeBlocks, 36545 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 36521 ConstructedInterpolants, 463 QuantifiedInterpolants, 294903397 SizeOfPredicates, 10 NumberOfNonLiveVariables, 17567 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 24 InterpolantComputations, 14 PerfectInterpolantSequences, 129748/138965 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown