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/Problem11_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:04:28,684 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:04:28,688 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:04:28,703 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:04:28,704 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:04:28,706 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:04:28,708 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:04:28,710 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:04:28,717 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:04:28,718 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:04:28,719 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:04:28,720 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:04:28,720 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:04:28,721 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:04:28,723 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:04:28,723 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:04:28,724 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:04:28,726 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:04:28,728 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:04:28,729 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:04:28,730 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:04:28,733 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:04:28,735 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 16:04:28,735 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 16:04:28,735 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 16:04:28,736 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 16:04:28,737 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 16:04:28,738 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 16:04:28,739 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 16:04:28,740 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 16:04:28,740 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 16:04:28,740 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 16:04:28,741 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 16:04:28,741 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 16:04:28,742 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 16:04:28,743 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 16:04:28,743 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:04:28,757 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:04:28,758 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:04:28,758 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:04:28,759 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:04:28,759 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:04:28,760 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:04:28,760 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:04:28,760 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:04:28,760 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:04:28,760 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:04:28,761 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:04:28,761 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:04:28,761 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:04:28,761 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:04:28,761 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:04:28,762 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:04:28,762 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:04:28,762 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:04:28,762 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:04:28,762 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:04:28,763 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:04:28,763 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:04:28,763 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:04:28,763 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:04:28,763 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:04:28,764 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:04:28,764 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:04:28,764 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:04:28,821 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:04:28,835 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:04:28,840 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:04:28,844 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:04:28,844 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:04:28,845 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label24_true-unreach-call.c [2018-10-24 16:04:28,926 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8f8c267db/75aa0d9366a644409b9dd68e03e2fba0/FLAGa4670fc0a [2018-10-24 16:04:29,607 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:04:29,608 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label24_true-unreach-call.c [2018-10-24 16:04:29,629 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8f8c267db/75aa0d9366a644409b9dd68e03e2fba0/FLAGa4670fc0a [2018-10-24 16:04:29,646 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8f8c267db/75aa0d9366a644409b9dd68e03e2fba0 [2018-10-24 16:04:29,657 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:04:29,658 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:04:29,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:04:29,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:04:29,663 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:04:29,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:04:29" (1/1) ... [2018-10-24 16:04:29,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@405e6276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:04:29, skipping insertion in model container [2018-10-24 16:04:29,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:04:29" (1/1) ... [2018-10-24 16:04:29,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:04:29,746 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:04:30,348 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:04:30,353 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:04:30,575 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:04:30,597 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:04:30,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:04:30 WrapperNode [2018-10-24 16:04:30,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:04:30,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:04:30,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:04:30,600 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:04:30,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:04:30" (1/1) ... [2018-10-24 16:04:30,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:04:30" (1/1) ... [2018-10-24 16:04:30,913 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:04:30,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:04:30,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:04:30,914 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:04:30,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:04:30" (1/1) ... [2018-10-24 16:04:30,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:04:30" (1/1) ... [2018-10-24 16:04:30,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:04:30" (1/1) ... [2018-10-24 16:04:30,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:04:30" (1/1) ... [2018-10-24 16:04:30,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:04:30" (1/1) ... [2018-10-24 16:04:31,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:04:30" (1/1) ... [2018-10-24 16:04:31,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:04:30" (1/1) ... [2018-10-24 16:04:31,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:04:31,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:04:31,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:04:31,051 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:04:31,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:04:30" (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 16:04:31,112 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:04:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:04:31,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:04:35,918 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:04:35,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:04:35 BoogieIcfgContainer [2018-10-24 16:04:35,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:04:35,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:04:35,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:04:35,924 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:04:35,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:04:29" (1/3) ... [2018-10-24 16:04:35,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3d60ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:04:35, skipping insertion in model container [2018-10-24 16:04:35,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:04:30" (2/3) ... [2018-10-24 16:04:35,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3d60ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:04:35, skipping insertion in model container [2018-10-24 16:04:35,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:04:35" (3/3) ... [2018-10-24 16:04:35,928 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label24_true-unreach-call.c [2018-10-24 16:04:35,938 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:04:35,949 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:04:35,964 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:04:36,003 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:04:36,004 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:04:36,004 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:04:36,004 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:04:36,005 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:04:36,005 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:04:36,005 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:04:36,005 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:04:36,005 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:04:36,041 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2018-10-24 16:04:36,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-24 16:04:36,052 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:04:36,053 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:04:36,056 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:04:36,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:04:36,063 INFO L82 PathProgramCache]: Analyzing trace with hash -2139005982, now seen corresponding path program 1 times [2018-10-24 16:04:36,065 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:04:36,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:04:36,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:36,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:04:36,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:36,593 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 16:04:36,605 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 16:04:36,608 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:04:36,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:04:36,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:04:36,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:04:36,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:04:36,633 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 4 states. [2018-10-24 16:04:39,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:04:39,761 INFO L93 Difference]: Finished difference Result 958 states and 1725 transitions. [2018-10-24 16:04:39,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:04:39,767 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-10-24 16:04:39,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:04:39,797 INFO L225 Difference]: With dead ends: 958 [2018-10-24 16:04:39,798 INFO L226 Difference]: Without dead ends: 667 [2018-10-24 16:04:39,803 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 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 16:04:39,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2018-10-24 16:04:39,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2018-10-24 16:04:39,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2018-10-24 16:04:39,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 983 transitions. [2018-10-24 16:04:39,894 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 983 transitions. Word has length 52 [2018-10-24 16:04:39,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:04:39,894 INFO L481 AbstractCegarLoop]: Abstraction has 667 states and 983 transitions. [2018-10-24 16:04:39,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:04:39,895 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 983 transitions. [2018-10-24 16:04:39,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-24 16:04:39,901 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:04:39,902 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 16:04:39,902 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:04:39,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:04:39,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1246407004, now seen corresponding path program 1 times [2018-10-24 16:04:39,903 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:04:39,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:04:39,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:39,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:04:39,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:40,344 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:04:40,344 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:04:40,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:04:40,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:04:40,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:04:40,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:04:40,347 INFO L87 Difference]: Start difference. First operand 667 states and 983 transitions. Second operand 5 states. [2018-10-24 16:04:45,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:04:45,792 INFO L93 Difference]: Finished difference Result 2465 states and 3702 transitions. [2018-10-24 16:04:45,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:04:45,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2018-10-24 16:04:45,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:04:45,804 INFO L225 Difference]: With dead ends: 2465 [2018-10-24 16:04:45,804 INFO L226 Difference]: Without dead ends: 1800 [2018-10-24 16:04:45,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:04:45,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2018-10-24 16:04:45,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1795. [2018-10-24 16:04:45,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1795 states. [2018-10-24 16:04:45,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 2358 transitions. [2018-10-24 16:04:45,867 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 2358 transitions. Word has length 122 [2018-10-24 16:04:45,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:04:45,867 INFO L481 AbstractCegarLoop]: Abstraction has 1795 states and 2358 transitions. [2018-10-24 16:04:45,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:04:45,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 2358 transitions. [2018-10-24 16:04:45,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-24 16:04:45,873 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:04:45,873 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:04:45,874 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:04:45,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:04:45,874 INFO L82 PathProgramCache]: Analyzing trace with hash -2005591657, now seen corresponding path program 1 times [2018-10-24 16:04:45,874 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:04:45,875 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:04:45,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:45,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:04:45,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:46,229 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:04:46,229 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:04:46,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:04:46,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:04:46,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:04:46,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:04:46,234 INFO L87 Difference]: Start difference. First operand 1795 states and 2358 transitions. Second operand 4 states. [2018-10-24 16:04:48,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:04:48,890 INFO L93 Difference]: Finished difference Result 5096 states and 6939 transitions. [2018-10-24 16:04:48,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:04:48,901 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2018-10-24 16:04:48,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:04:48,916 INFO L225 Difference]: With dead ends: 5096 [2018-10-24 16:04:48,917 INFO L226 Difference]: Without dead ends: 2931 [2018-10-24 16:04:48,920 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 16:04:48,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2018-10-24 16:04:48,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 2349. [2018-10-24 16:04:48,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2349 states. [2018-10-24 16:04:48,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2349 states to 2349 states and 3022 transitions. [2018-10-24 16:04:48,975 INFO L78 Accepts]: Start accepts. Automaton has 2349 states and 3022 transitions. Word has length 180 [2018-10-24 16:04:48,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:04:48,976 INFO L481 AbstractCegarLoop]: Abstraction has 2349 states and 3022 transitions. [2018-10-24 16:04:48,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:04:48,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2349 states and 3022 transitions. [2018-10-24 16:04:48,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-24 16:04:48,979 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:04:48,980 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 16:04:48,980 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:04:48,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:04:48,981 INFO L82 PathProgramCache]: Analyzing trace with hash 321074286, now seen corresponding path program 1 times [2018-10-24 16:04:48,981 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:04:48,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:04:48,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:48,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:04:48,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:49,280 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-10-24 16:04:49,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:04:49,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:04:49,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:04:49,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:04:49,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:04:49,282 INFO L87 Difference]: Start difference. First operand 2349 states and 3022 transitions. Second operand 4 states. [2018-10-24 16:04:54,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:04:54,093 INFO L93 Difference]: Finished difference Result 8597 states and 11197 transitions. [2018-10-24 16:04:54,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:04:54,094 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 198 [2018-10-24 16:04:54,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:04:54,123 INFO L225 Difference]: With dead ends: 8597 [2018-10-24 16:04:54,123 INFO L226 Difference]: Without dead ends: 6250 [2018-10-24 16:04:54,128 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 16:04:54,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6250 states. [2018-10-24 16:04:54,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6250 to 6233. [2018-10-24 16:04:54,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6233 states. [2018-10-24 16:04:54,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6233 states to 6233 states and 7686 transitions. [2018-10-24 16:04:54,319 INFO L78 Accepts]: Start accepts. Automaton has 6233 states and 7686 transitions. Word has length 198 [2018-10-24 16:04:54,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:04:54,319 INFO L481 AbstractCegarLoop]: Abstraction has 6233 states and 7686 transitions. [2018-10-24 16:04:54,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:04:54,319 INFO L276 IsEmpty]: Start isEmpty. Operand 6233 states and 7686 transitions. [2018-10-24 16:04:54,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-24 16:04:54,325 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:04:54,325 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:04:54,325 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:04:54,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:04:54,326 INFO L82 PathProgramCache]: Analyzing trace with hash 290347242, now seen corresponding path program 1 times [2018-10-24 16:04:54,326 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:04:54,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:04:54,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:54,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:04:54,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:54,794 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-10-24 16:04:54,795 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:04:54,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:04:54,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:04:54,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:04:54,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:04:54,796 INFO L87 Difference]: Start difference. First operand 6233 states and 7686 transitions. Second operand 4 states. [2018-10-24 16:04:57,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:04:57,126 INFO L93 Difference]: Finished difference Result 13956 states and 17375 transitions. [2018-10-24 16:04:57,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:04:57,127 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 242 [2018-10-24 16:04:57,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:04:57,156 INFO L225 Difference]: With dead ends: 13956 [2018-10-24 16:04:57,157 INFO L226 Difference]: Without dead ends: 7910 [2018-10-24 16:04:57,165 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 16:04:57,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7910 states. [2018-10-24 16:04:57,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7910 to 7525. [2018-10-24 16:04:57,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7525 states. [2018-10-24 16:04:57,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7525 states to 7525 states and 9053 transitions. [2018-10-24 16:04:57,305 INFO L78 Accepts]: Start accepts. Automaton has 7525 states and 9053 transitions. Word has length 242 [2018-10-24 16:04:57,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:04:57,306 INFO L481 AbstractCegarLoop]: Abstraction has 7525 states and 9053 transitions. [2018-10-24 16:04:57,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:04:57,306 INFO L276 IsEmpty]: Start isEmpty. Operand 7525 states and 9053 transitions. [2018-10-24 16:04:57,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-24 16:04:57,312 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:04:57,312 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:04:57,313 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:04:57,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:04:57,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1874412645, now seen corresponding path program 1 times [2018-10-24 16:04:57,314 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:04:57,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:04:57,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:57,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:04:57,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:04:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:04:57,765 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:04:57,766 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:04:57,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:04:57,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:04:57,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:04:57,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:04:57,767 INFO L87 Difference]: Start difference. First operand 7525 states and 9053 transitions. Second operand 5 states. [2018-10-24 16:05:01,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:05:01,210 INFO L93 Difference]: Finished difference Result 25449 states and 31389 transitions. [2018-10-24 16:05:01,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:05:01,211 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 246 [2018-10-24 16:05:01,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:05:01,268 INFO L225 Difference]: With dead ends: 25449 [2018-10-24 16:05:01,268 INFO L226 Difference]: Without dead ends: 17926 [2018-10-24 16:05:01,283 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:05:01,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17926 states. [2018-10-24 16:05:01,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17926 to 14387. [2018-10-24 16:05:01,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14387 states. [2018-10-24 16:05:01,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14387 states to 14387 states and 17124 transitions. [2018-10-24 16:05:01,646 INFO L78 Accepts]: Start accepts. Automaton has 14387 states and 17124 transitions. Word has length 246 [2018-10-24 16:05:01,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:05:01,647 INFO L481 AbstractCegarLoop]: Abstraction has 14387 states and 17124 transitions. [2018-10-24 16:05:01,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:05:01,647 INFO L276 IsEmpty]: Start isEmpty. Operand 14387 states and 17124 transitions. [2018-10-24 16:05:01,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-10-24 16:05:01,662 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:05:01,663 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:05:01,663 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:05:01,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:05:01,664 INFO L82 PathProgramCache]: Analyzing trace with hash -627399339, now seen corresponding path program 1 times [2018-10-24 16:05:01,664 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:05:01,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:05:01,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:01,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:01,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:02,198 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-10-24 16:05:02,198 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:05:02,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:05:02,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:05:02,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:05:02,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:05:02,200 INFO L87 Difference]: Start difference. First operand 14387 states and 17124 transitions. Second operand 5 states. [2018-10-24 16:05:05,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:05:05,273 INFO L93 Difference]: Finished difference Result 30467 states and 36412 transitions. [2018-10-24 16:05:05,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:05:05,274 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2018-10-24 16:05:05,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:05:05,310 INFO L225 Difference]: With dead ends: 30467 [2018-10-24 16:05:05,310 INFO L226 Difference]: Without dead ends: 16452 [2018-10-24 16:05:05,324 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:05:05,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16452 states. [2018-10-24 16:05:05,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16452 to 15875. [2018-10-24 16:05:05,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15875 states. [2018-10-24 16:05:05,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15875 states to 15875 states and 18796 transitions. [2018-10-24 16:05:05,558 INFO L78 Accepts]: Start accepts. Automaton has 15875 states and 18796 transitions. Word has length 318 [2018-10-24 16:05:05,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:05:05,559 INFO L481 AbstractCegarLoop]: Abstraction has 15875 states and 18796 transitions. [2018-10-24 16:05:05,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:05:05,559 INFO L276 IsEmpty]: Start isEmpty. Operand 15875 states and 18796 transitions. [2018-10-24 16:05:05,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-10-24 16:05:05,577 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:05:05,577 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:05:05,578 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:05:05,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:05:05,578 INFO L82 PathProgramCache]: Analyzing trace with hash 898359251, now seen corresponding path program 1 times [2018-10-24 16:05:05,578 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:05:05,579 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:05:05,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:05,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:05,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:05,926 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-24 16:05:05,927 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:05:05,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 16:05:05,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:05:05,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:05:05,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:05:05,928 INFO L87 Difference]: Start difference. First operand 15875 states and 18796 transitions. Second operand 3 states. [2018-10-24 16:05:07,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:05:07,633 INFO L93 Difference]: Finished difference Result 31187 states and 36993 transitions. [2018-10-24 16:05:07,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:05:07,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 336 [2018-10-24 16:05:07,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:05:07,653 INFO L225 Difference]: With dead ends: 31187 [2018-10-24 16:05:07,653 INFO L226 Difference]: Without dead ends: 15684 [2018-10-24 16:05:07,668 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 16:05:07,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15684 states. [2018-10-24 16:05:07,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15684 to 15683. [2018-10-24 16:05:07,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15683 states. [2018-10-24 16:05:07,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15683 states to 15683 states and 18573 transitions. [2018-10-24 16:05:07,877 INFO L78 Accepts]: Start accepts. Automaton has 15683 states and 18573 transitions. Word has length 336 [2018-10-24 16:05:07,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:05:07,877 INFO L481 AbstractCegarLoop]: Abstraction has 15683 states and 18573 transitions. [2018-10-24 16:05:07,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:05:07,878 INFO L276 IsEmpty]: Start isEmpty. Operand 15683 states and 18573 transitions. [2018-10-24 16:05:07,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-10-24 16:05:07,901 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:05:07,901 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:05:07,901 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:05:07,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:05:07,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1154552847, now seen corresponding path program 1 times [2018-10-24 16:05:07,902 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:05:07,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:05:07,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:07,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:07,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:08,472 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 294 proven. 82 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-10-24 16:05:08,472 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:05:08,472 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 16:05:08,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:08,657 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:05:09,070 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 21 [2018-10-24 16:05:09,771 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 344 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-10-24 16:05:09,805 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:05:09,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 16:05:09,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:05:09,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:05:09,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:05:09,808 INFO L87 Difference]: Start difference. First operand 15683 states and 18573 transitions. Second operand 7 states. [2018-10-24 16:05:25,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:05:25,353 INFO L93 Difference]: Finished difference Result 45875 states and 55314 transitions. [2018-10-24 16:05:25,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 16:05:25,353 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 366 [2018-10-24 16:05:25,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:05:25,408 INFO L225 Difference]: With dead ends: 45875 [2018-10-24 16:05:25,408 INFO L226 Difference]: Without dead ends: 30564 [2018-10-24 16:05:25,434 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2018-10-24 16:05:25,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30564 states. [2018-10-24 16:05:25,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30564 to 25147. [2018-10-24 16:05:25,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25147 states. [2018-10-24 16:05:25,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25147 states to 25147 states and 29085 transitions. [2018-10-24 16:05:25,940 INFO L78 Accepts]: Start accepts. Automaton has 25147 states and 29085 transitions. Word has length 366 [2018-10-24 16:05:25,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:05:25,940 INFO L481 AbstractCegarLoop]: Abstraction has 25147 states and 29085 transitions. [2018-10-24 16:05:25,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:05:25,940 INFO L276 IsEmpty]: Start isEmpty. Operand 25147 states and 29085 transitions. [2018-10-24 16:05:25,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-10-24 16:05:25,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:05:25,982 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:05:25,982 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:05:25,983 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:05:25,983 INFO L82 PathProgramCache]: Analyzing trace with hash -756777930, now seen corresponding path program 1 times [2018-10-24 16:05:25,983 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:05:25,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:05:25,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:25,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:25,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:26,550 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-24 16:05:26,650 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 491 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2018-10-24 16:05:26,650 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:05:26,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:05:26,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:05:26,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:05:26,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:05:26,652 INFO L87 Difference]: Start difference. First operand 25147 states and 29085 transitions. Second operand 4 states. [2018-10-24 16:05:29,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:05:29,044 INFO L93 Difference]: Finished difference Result 53830 states and 62428 transitions. [2018-10-24 16:05:29,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:05:29,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 413 [2018-10-24 16:05:29,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:05:29,071 INFO L225 Difference]: With dead ends: 53830 [2018-10-24 16:05:29,071 INFO L226 Difference]: Without dead ends: 29055 [2018-10-24 16:05:29,081 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:05:29,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29055 states. [2018-10-24 16:05:29,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29055 to 27913. [2018-10-24 16:05:29,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27913 states. [2018-10-24 16:05:29,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27913 states to 27913 states and 31920 transitions. [2018-10-24 16:05:29,411 INFO L78 Accepts]: Start accepts. Automaton has 27913 states and 31920 transitions. Word has length 413 [2018-10-24 16:05:29,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:05:29,412 INFO L481 AbstractCegarLoop]: Abstraction has 27913 states and 31920 transitions. [2018-10-24 16:05:29,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:05:29,412 INFO L276 IsEmpty]: Start isEmpty. Operand 27913 states and 31920 transitions. [2018-10-24 16:05:29,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-10-24 16:05:29,450 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:05:29,451 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:05:29,451 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:05:29,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:05:29,451 INFO L82 PathProgramCache]: Analyzing trace with hash 74215194, now seen corresponding path program 1 times [2018-10-24 16:05:29,451 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:05:29,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:05:29,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:29,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:29,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:30,096 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 334 proven. 119 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-10-24 16:05:30,096 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:05:30,097 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 16:05:30,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:30,248 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:05:30,490 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 334 proven. 119 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-10-24 16:05:30,523 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:05:30,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2018-10-24 16:05:30,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:05:30,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:05:30,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:05:30,526 INFO L87 Difference]: Start difference. First operand 27913 states and 31920 transitions. Second operand 5 states. [2018-10-24 16:05:34,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:05:34,393 INFO L93 Difference]: Finished difference Result 60850 states and 69696 transitions. [2018-10-24 16:05:34,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 16:05:34,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 418 [2018-10-24 16:05:34,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:05:34,432 INFO L225 Difference]: With dead ends: 60850 [2018-10-24 16:05:34,432 INFO L226 Difference]: Without dead ends: 34789 [2018-10-24 16:05:34,451 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 417 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:05:34,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34789 states. [2018-10-24 16:05:34,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34789 to 29948. [2018-10-24 16:05:34,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29948 states. [2018-10-24 16:05:34,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29948 states to 29948 states and 34227 transitions. [2018-10-24 16:05:34,892 INFO L78 Accepts]: Start accepts. Automaton has 29948 states and 34227 transitions. Word has length 418 [2018-10-24 16:05:34,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:05:34,893 INFO L481 AbstractCegarLoop]: Abstraction has 29948 states and 34227 transitions. [2018-10-24 16:05:34,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:05:34,894 INFO L276 IsEmpty]: Start isEmpty. Operand 29948 states and 34227 transitions. [2018-10-24 16:05:34,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2018-10-24 16:05:34,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:05:34,930 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:05:34,931 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:05:34,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:05:34,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1132935567, now seen corresponding path program 1 times [2018-10-24 16:05:34,931 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:05:34,931 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:05:34,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:34,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:34,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:05:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:35,783 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 440 proven. 181 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-10-24 16:05:35,783 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:05:35,784 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 16:05:35,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:05:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:05:35,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:06:07,176 WARN L179 SmtUtils]: Spent 24.83 s on a formula simplification. DAG size of input: 581 DAG size of output: 113 [2018-10-24 16:06:08,494 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 358 proven. 50 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2018-10-24 16:06:08,515 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:06:08,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-10-24 16:06:08,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 16:06:08,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 16:06:08,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=36, Unknown=3, NotChecked=0, Total=56 [2018-10-24 16:06:08,518 INFO L87 Difference]: Start difference. First operand 29948 states and 34227 transitions. Second operand 8 states. Received shutdown request... [2018-10-24 16:08:44,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 16:08:44,630 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:08:44,636 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:08:44,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:08:44 BoogieIcfgContainer [2018-10-24 16:08:44,637 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:08:44,637 INFO L168 Benchmark]: Toolchain (without parser) took 254980.25 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -921.5 MB). Peak memory consumption was 881.0 MB. Max. memory is 7.1 GB. [2018-10-24 16:08:44,638 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:08:44,639 INFO L168 Benchmark]: CACSL2BoogieTranslator took 939.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:08:44,640 INFO L168 Benchmark]: Boogie Procedure Inliner took 313.46 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -826.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:08:44,641 INFO L168 Benchmark]: Boogie Preprocessor took 136.96 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:08:44,641 INFO L168 Benchmark]: RCFGBuilder took 4867.99 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 180.4 MB). Peak memory consumption was 180.4 MB. Max. memory is 7.1 GB. [2018-10-24 16:08:44,642 INFO L168 Benchmark]: TraceAbstraction took 248716.55 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 1.1 GB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -339.2 MB). Peak memory consumption was 728.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:08:44,646 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 939.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 313.46 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -826.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.96 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4867.99 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 180.4 MB). Peak memory consumption was 180.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 248716.55 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 1.1 GB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -339.2 MB). Peak memory consumption was 728.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 159]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 159). Cancelled while BasicCegarLoop was constructing difference of abstraction (29948states) and FLOYD_HOARE automaton (currently 9 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (41560 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 284 locations, 1 error locations. TIMEOUT Result, 248.6s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 205.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2754 SDtfs, 10151 SDslu, 1826 SDs, 0 SdLazy, 19650 SolverSat, 5152 SolverUnsat, 42 SolverUnknown, 0 SolverNotchecked, 196.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1270 GetRequests, 1220 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 34.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29948occurred in iteration=11, 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: 2.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 16506 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 38.4s InterpolantComputationTime, 4529 NumberOfCodeBlocks, 4529 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 4514 ConstructedInterpolants, 238 QuantifiedInterpolants, 11367084 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1623 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 15 InterpolantComputations, 10 PerfectInterpolantSequences, 4508/5059 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown