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/Problem19_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:03:30,697 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:03:30,703 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:03:30,722 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:03:30,722 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:03:30,723 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:03:30,725 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:03:30,727 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:03:30,728 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:03:30,729 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:03:30,730 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:03:30,730 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:03:30,731 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:03:30,732 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:03:30,733 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:03:30,734 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:03:30,735 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:03:30,737 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:03:30,739 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:03:30,740 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:03:30,741 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:03:30,742 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:03:30,745 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 17:03:30,754 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 17:03:30,782 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:03:30,782 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:03:30,783 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:03:30,783 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 17:03:30,784 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 17:03:30,784 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 17:03:30,784 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 17:03:30,785 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:03:30,785 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:03:30,785 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:03:30,785 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:03:30,785 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:03:30,785 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:03:30,786 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:03:30,786 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:03:30,786 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:03:30,786 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:03:30,786 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:03:30,787 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:03:30,787 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:03:30,787 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:03:30,787 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:03:30,787 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:03:30,788 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 17:03:30,788 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:03:30,788 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:03:30,788 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:03:30,788 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:03:30,842 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:03:30,860 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:03:30,864 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:03:30,865 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:03:30,866 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:03:30,867 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label12_true-unreach-call.c [2018-10-24 17:03:30,935 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d2b3c8c94/27b855bb06b54b09bcafb874215f6d17/FLAG39ee85328 [2018-10-24 17:03:31,888 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:03:31,891 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label12_true-unreach-call.c [2018-10-24 17:03:31,939 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d2b3c8c94/27b855bb06b54b09bcafb874215f6d17/FLAG39ee85328 [2018-10-24 17:03:31,959 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d2b3c8c94/27b855bb06b54b09bcafb874215f6d17 [2018-10-24 17:03:31,973 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:03:31,975 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:03:31,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:03:31,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:03:31,982 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:03:31,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:03:31" (1/1) ... [2018-10-24 17:03:31,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@675171b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:31, skipping insertion in model container [2018-10-24 17:03:31,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:03:31" (1/1) ... [2018-10-24 17:03:31,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:03:32,292 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:03:34,466 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:03:34,472 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:03:35,559 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:03:35,621 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:03:35,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:35 WrapperNode [2018-10-24 17:03:35,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:03:35,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:03:35,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:03:35,623 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:03:35,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:35" (1/1) ... [2018-10-24 17:03:35,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:35" (1/1) ... [2018-10-24 17:03:36,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:03:36,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:03:36,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:03:36,751 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:03:36,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:35" (1/1) ... [2018-10-24 17:03:36,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:35" (1/1) ... [2018-10-24 17:03:36,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:35" (1/1) ... [2018-10-24 17:03:36,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:35" (1/1) ... [2018-10-24 17:03:37,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:35" (1/1) ... [2018-10-24 17:03:37,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:35" (1/1) ... [2018-10-24 17:03:37,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:35" (1/1) ... [2018-10-24 17:03:37,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:03:37,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:03:37,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:03:37,312 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:03:37,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:35" (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 17:03:37,379 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 17:03:37,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:03:37,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:03:56,619 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:03:56,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:03:56 BoogieIcfgContainer [2018-10-24 17:03:56,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:03:56,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:03:56,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:03:56,627 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:03:56,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:03:31" (1/3) ... [2018-10-24 17:03:56,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a665a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:03:56, skipping insertion in model container [2018-10-24 17:03:56,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:35" (2/3) ... [2018-10-24 17:03:56,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a665a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:03:56, skipping insertion in model container [2018-10-24 17:03:56,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:03:56" (3/3) ... [2018-10-24 17:03:56,633 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label12_true-unreach-call.c [2018-10-24 17:03:56,644 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:03:56,656 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:03:56,675 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:03:56,732 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 17:03:56,733 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:03:56,733 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:03:56,733 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:03:56,733 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:03:56,734 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:03:56,734 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:03:56,734 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:03:56,734 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:03:56,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 17:03:56,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-24 17:03:56,797 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:03:56,798 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] [2018-10-24 17:03:56,800 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:03:56,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:03:56,805 INFO L82 PathProgramCache]: Analyzing trace with hash 147574146, now seen corresponding path program 1 times [2018-10-24 17:03:56,807 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:03:56,807 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:03:56,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:56,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:03:56,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:03:57,327 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 17:03:57,330 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:03:57,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:03:57,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:03:57,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:03:57,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:03:57,352 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-24 17:04:22,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:04:22,275 INFO L93 Difference]: Finished difference Result 6419 states and 12268 transitions. [2018-10-24 17:04:22,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:04:22,278 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2018-10-24 17:04:22,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:04:22,335 INFO L225 Difference]: With dead ends: 6419 [2018-10-24 17:04:22,335 INFO L226 Difference]: Without dead ends: 4663 [2018-10-24 17:04:22,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 17:04:22,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4663 states. [2018-10-24 17:04:22,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4663 to 4573. [2018-10-24 17:04:22,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4573 states. [2018-10-24 17:04:22,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 7863 transitions. [2018-10-24 17:04:22,549 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 7863 transitions. Word has length 45 [2018-10-24 17:04:22,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:04:22,550 INFO L481 AbstractCegarLoop]: Abstraction has 4573 states and 7863 transitions. [2018-10-24 17:04:22,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:04:22,550 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 7863 transitions. [2018-10-24 17:04:22,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-24 17:04:22,562 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:04:22,562 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:04:22,563 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:04:22,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:04:22,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1565483384, now seen corresponding path program 1 times [2018-10-24 17:04:22,563 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:04:22,564 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:04:22,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:22,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:04:22,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:04:22,851 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:04:22,851 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:04:22,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:04:22,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:04:22,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:04:22,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:04:22,854 INFO L87 Difference]: Start difference. First operand 4573 states and 7863 transitions. Second operand 4 states. [2018-10-24 17:04:49,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:04:49,716 INFO L93 Difference]: Finished difference Result 17564 states and 30487 transitions. [2018-10-24 17:04:49,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:04:49,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2018-10-24 17:04:49,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:04:49,786 INFO L225 Difference]: With dead ends: 17564 [2018-10-24 17:04:49,786 INFO L226 Difference]: Without dead ends: 12993 [2018-10-24 17:04:49,795 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 17:04:49,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12993 states. [2018-10-24 17:04:49,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12993 to 8672. [2018-10-24 17:04:49,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8672 states. [2018-10-24 17:04:50,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8672 states to 8672 states and 14512 transitions. [2018-10-24 17:04:50,005 INFO L78 Accepts]: Start accepts. Automaton has 8672 states and 14512 transitions. Word has length 129 [2018-10-24 17:04:50,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:04:50,006 INFO L481 AbstractCegarLoop]: Abstraction has 8672 states and 14512 transitions. [2018-10-24 17:04:50,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:04:50,006 INFO L276 IsEmpty]: Start isEmpty. Operand 8672 states and 14512 transitions. [2018-10-24 17:04:50,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-24 17:04:50,015 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:04:50,016 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:04:50,017 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:04:50,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:04:50,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1180457619, now seen corresponding path program 1 times [2018-10-24 17:04:50,017 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:04:50,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:04:50,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:50,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:04:50,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:04:50,429 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:04:50,430 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:04:50,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:04:50,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:04:50,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:04:50,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:04:50,433 INFO L87 Difference]: Start difference. First operand 8672 states and 14512 transitions. Second operand 4 states. [2018-10-24 17:05:16,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:05:16,060 INFO L93 Difference]: Finished difference Result 34022 states and 57203 transitions. [2018-10-24 17:05:16,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:05:16,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2018-10-24 17:05:16,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:05:16,140 INFO L225 Difference]: With dead ends: 34022 [2018-10-24 17:05:16,140 INFO L226 Difference]: Without dead ends: 25352 [2018-10-24 17:05:16,155 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 17:05:16,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25352 states. [2018-10-24 17:05:16,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25352 to 25338. [2018-10-24 17:05:16,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25338 states. [2018-10-24 17:05:16,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25338 states to 25338 states and 36988 transitions. [2018-10-24 17:05:16,543 INFO L78 Accepts]: Start accepts. Automaton has 25338 states and 36988 transitions. Word has length 169 [2018-10-24 17:05:16,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:05:16,543 INFO L481 AbstractCegarLoop]: Abstraction has 25338 states and 36988 transitions. [2018-10-24 17:05:16,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:05:16,543 INFO L276 IsEmpty]: Start isEmpty. Operand 25338 states and 36988 transitions. [2018-10-24 17:05:16,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-10-24 17:05:16,551 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:05:16,551 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:05:16,552 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:05:16,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:05:16,552 INFO L82 PathProgramCache]: Analyzing trace with hash 352749820, now seen corresponding path program 1 times [2018-10-24 17:05:16,552 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:05:16,553 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:05:16,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:16,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:05:16,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:05:17,075 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-10-24 17:05:17,076 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:05:17,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:05:17,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:05:17,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:05:17,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:05:17,078 INFO L87 Difference]: Start difference. First operand 25338 states and 36988 transitions. Second operand 4 states. [2018-10-24 17:05:36,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:05:36,913 INFO L93 Difference]: Finished difference Result 93031 states and 135352 transitions. [2018-10-24 17:05:36,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:05:36,914 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 353 [2018-10-24 17:05:36,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:05:37,048 INFO L225 Difference]: With dead ends: 93031 [2018-10-24 17:05:37,048 INFO L226 Difference]: Without dead ends: 67695 [2018-10-24 17:05:37,088 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 17:05:37,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67695 states. [2018-10-24 17:05:37,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67695 to 64956. [2018-10-24 17:05:37,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64956 states. [2018-10-24 17:05:37,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64956 states to 64956 states and 86129 transitions. [2018-10-24 17:05:37,914 INFO L78 Accepts]: Start accepts. Automaton has 64956 states and 86129 transitions. Word has length 353 [2018-10-24 17:05:37,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:05:37,915 INFO L481 AbstractCegarLoop]: Abstraction has 64956 states and 86129 transitions. [2018-10-24 17:05:37,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:05:37,915 INFO L276 IsEmpty]: Start isEmpty. Operand 64956 states and 86129 transitions. [2018-10-24 17:05:37,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-10-24 17:05:37,931 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:05:37,931 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:05:37,932 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:05:37,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:05:37,932 INFO L82 PathProgramCache]: Analyzing trace with hash 336374991, now seen corresponding path program 1 times [2018-10-24 17:05:37,932 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:05:37,932 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:05:37,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:37,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:05:37,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:05:38,353 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 17:05:39,025 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2018-10-24 17:05:39,025 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:05:39,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:05:39,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:05:39,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:05:39,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:05:39,027 INFO L87 Difference]: Start difference. First operand 64956 states and 86129 transitions. Second operand 4 states. [2018-10-24 17:06:00,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:06:00,322 INFO L93 Difference]: Finished difference Result 235259 states and 309486 transitions. [2018-10-24 17:06:00,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:06:00,326 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 454 [2018-10-24 17:06:00,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:06:00,544 INFO L225 Difference]: With dead ends: 235259 [2018-10-24 17:06:00,544 INFO L226 Difference]: Without dead ends: 170305 [2018-10-24 17:06:00,618 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 17:06:00,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170305 states. [2018-10-24 17:06:02,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170305 to 168873. [2018-10-24 17:06:02,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168873 states. [2018-10-24 17:06:02,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168873 states to 168873 states and 202433 transitions. [2018-10-24 17:06:02,452 INFO L78 Accepts]: Start accepts. Automaton has 168873 states and 202433 transitions. Word has length 454 [2018-10-24 17:06:02,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:06:02,453 INFO L481 AbstractCegarLoop]: Abstraction has 168873 states and 202433 transitions. [2018-10-24 17:06:02,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:06:02,453 INFO L276 IsEmpty]: Start isEmpty. Operand 168873 states and 202433 transitions. [2018-10-24 17:06:02,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1008 [2018-10-24 17:06:02,516 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:06:02,517 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, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:06:02,517 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:06:02,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:06:02,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1340196843, now seen corresponding path program 1 times [2018-10-24 17:06:02,518 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:06:02,518 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:06:02,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:02,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:06:02,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:06:03,140 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 17:06:03,685 WARN L179 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-24 17:06:04,054 WARN L179 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2018-10-24 17:06:05,587 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2018-10-24 17:06:05,587 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:06:05,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:06:05,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 17:06:05,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 17:06:05,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:06:05,590 INFO L87 Difference]: Start difference. First operand 168873 states and 202433 transitions. Second operand 7 states. [2018-10-24 17:06:44,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:06:44,444 INFO L93 Difference]: Finished difference Result 377375 states and 447271 transitions. [2018-10-24 17:06:44,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:06:44,444 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1007 [2018-10-24 17:06:44,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:06:44,686 INFO L225 Difference]: With dead ends: 377375 [2018-10-24 17:06:44,686 INFO L226 Difference]: Without dead ends: 209870 [2018-10-24 17:06:44,785 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-24 17:06:44,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209870 states. [2018-10-24 17:06:47,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209870 to 205764. [2018-10-24 17:06:47,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205764 states. [2018-10-24 17:06:47,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205764 states to 205764 states and 240850 transitions. [2018-10-24 17:06:47,467 INFO L78 Accepts]: Start accepts. Automaton has 205764 states and 240850 transitions. Word has length 1007 [2018-10-24 17:06:47,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:06:47,468 INFO L481 AbstractCegarLoop]: Abstraction has 205764 states and 240850 transitions. [2018-10-24 17:06:47,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 17:06:47,468 INFO L276 IsEmpty]: Start isEmpty. Operand 205764 states and 240850 transitions. [2018-10-24 17:06:47,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1027 [2018-10-24 17:06:47,499 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:06:47,500 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:06:47,501 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:06:47,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:06:47,501 INFO L82 PathProgramCache]: Analyzing trace with hash -2033357584, now seen corresponding path program 1 times [2018-10-24 17:06:47,501 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:06:47,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:06:47,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:47,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:06:47,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:06:49,556 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 457 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2018-10-24 17:06:49,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:06:49,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:06:49,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:06:49,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:06:49,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:06:49,559 INFO L87 Difference]: Start difference. First operand 205764 states and 240850 transitions. Second operand 4 states. [2018-10-24 17:07:06,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:07:06,092 INFO L93 Difference]: Finished difference Result 474364 states and 558603 transitions. [2018-10-24 17:07:06,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:07:06,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1026 [2018-10-24 17:07:06,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:07:06,457 INFO L225 Difference]: With dead ends: 474364 [2018-10-24 17:07:06,457 INFO L226 Difference]: Without dead ends: 265863 [2018-10-24 17:07:06,568 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 17:07:06,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265863 states. [2018-10-24 17:07:09,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265863 to 265852. [2018-10-24 17:07:09,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265852 states. [2018-10-24 17:07:10,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265852 states to 265852 states and 296554 transitions. [2018-10-24 17:07:10,049 INFO L78 Accepts]: Start accepts. Automaton has 265852 states and 296554 transitions. Word has length 1026 [2018-10-24 17:07:10,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:07:10,050 INFO L481 AbstractCegarLoop]: Abstraction has 265852 states and 296554 transitions. [2018-10-24 17:07:10,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:07:10,050 INFO L276 IsEmpty]: Start isEmpty. Operand 265852 states and 296554 transitions. [2018-10-24 17:07:10,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2018-10-24 17:07:10,070 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:07:10,070 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:07:10,071 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:07:10,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:07:10,071 INFO L82 PathProgramCache]: Analyzing trace with hash -2116416662, now seen corresponding path program 1 times [2018-10-24 17:07:10,071 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:07:10,072 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:07:10,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:10,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:07:10,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:07:12,483 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2018-10-24 17:07:12,484 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:07:12,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:07:12,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 17:07:12,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 17:07:12,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:07:12,485 INFO L87 Difference]: Start difference. First operand 265852 states and 296554 transitions. Second operand 3 states. Received shutdown request... [2018-10-24 17:07:24,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:07:24,357 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:07:24,363 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:07:24,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:07:24 BoogieIcfgContainer [2018-10-24 17:07:24,364 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:07:24,365 INFO L168 Benchmark]: Toolchain (without parser) took 232391.52 ms. Allocated memory was 1.5 GB in the beginning and 3.2 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 955.3 MB in the end (delta: 420.5 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-24 17:07:24,366 INFO L168 Benchmark]: CDTParser took 0.23 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 17:07:24,367 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3646.64 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 983.0 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-24 17:07:24,368 INFO L168 Benchmark]: Boogie Procedure Inliner took 1127.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 826.3 MB). Free memory was 983.0 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. [2018-10-24 17:07:24,369 INFO L168 Benchmark]: Boogie Preprocessor took 560.63 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 97.3 MB). Peak memory consumption was 97.3 MB. Max. memory is 7.1 GB. [2018-10-24 17:07:24,369 INFO L168 Benchmark]: RCFGBuilder took 19308.66 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 291.5 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -377.5 MB). Peak memory consumption was 862.5 MB. Max. memory is 7.1 GB. [2018-10-24 17:07:24,370 INFO L168 Benchmark]: TraceAbstraction took 207741.32 ms. Allocated memory was 2.6 GB in the beginning and 3.2 GB in the end (delta: 550.5 MB). Free memory was 2.4 GB in the beginning and 955.3 MB in the end (delta: 1.4 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 17:07:24,376 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3646.64 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 983.0 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1127.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 826.3 MB). Free memory was 983.0 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 560.63 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 97.3 MB). Peak memory consumption was 97.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 19308.66 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 291.5 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -377.5 MB). Peak memory consumption was 862.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207741.32 ms. Allocated memory was 2.6 GB in the beginning and 3.2 GB in the end (delta: 550.5 MB). Free memory was 2.4 GB in the beginning and 955.3 MB in the end (delta: 1.4 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 148]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 148). Cancelled while BasicCegarLoop was constructing difference of abstraction (265852states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (207097 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 207.6s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 187.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10891 SDtfs, 31617 SDslu, 3464 SDs, 0 SdLazy, 77149 SolverSat, 18921 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 158.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=265852occurred in iteration=7, 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: 9.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 12713 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 4220 NumberOfCodeBlocks, 4220 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 4212 ConstructedInterpolants, 0 QuantifiedInterpolants, 7033042 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 3325/3325 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown