java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:23:21,760 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:23:21,764 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:23:21,778 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:23:21,779 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:23:21,780 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:23:21,781 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:23:21,783 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:23:21,784 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:23:21,785 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:23:21,786 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:23:21,787 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:23:21,788 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:23:21,789 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:23:21,794 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:23:21,795 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:23:21,796 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:23:21,797 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:23:21,799 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:23:21,801 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:23:21,802 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:23:21,803 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:23:21,806 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 20:23:21,815 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 20:23:21,830 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:23:21,830 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:23:21,831 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:23:21,831 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:23:21,832 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:23:21,832 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:23:21,832 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:23:21,832 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:23:21,833 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:23:21,833 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:23:21,833 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:23:21,833 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:23:21,833 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:23:21,834 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:23:21,834 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:23:21,834 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:23:21,834 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:23:21,834 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:23:21,834 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:23:21,835 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:23:21,835 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:23:21,835 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:23:21,835 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:23:21,835 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:23:21,836 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:23:21,836 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:23:21,836 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:23:21,836 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:23:21,879 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:23:21,896 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:23:21,900 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:23:21,902 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:23:21,902 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:23:21,903 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label56_true-unreach-call.c [2018-10-23 20:23:21,972 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4d740c4b9/50a36f6f3c87433a84d82ee7a1cc5500/FLAGd0ce0f3d1 [2018-10-23 20:23:22,840 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:23:22,841 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label56_true-unreach-call.c [2018-10-23 20:23:22,878 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4d740c4b9/50a36f6f3c87433a84d82ee7a1cc5500/FLAGd0ce0f3d1 [2018-10-23 20:23:22,894 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4d740c4b9/50a36f6f3c87433a84d82ee7a1cc5500 [2018-10-23 20:23:22,906 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:23:22,908 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:23:22,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:23:22,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:23:22,915 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:23:22,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:23:22" (1/1) ... [2018-10-23 20:23:22,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e1a2d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:22, skipping insertion in model container [2018-10-23 20:23:22,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:23:22" (1/1) ... [2018-10-23 20:23:22,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:23:23,116 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:23:24,686 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:23:24,690 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:23:25,387 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:23:25,425 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:23:25,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:25 WrapperNode [2018-10-23 20:23:25,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:23:25,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:23:25,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:23:25,427 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:23:25,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:25" (1/1) ... [2018-10-23 20:23:25,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:25" (1/1) ... [2018-10-23 20:23:26,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:23:26,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:23:26,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:23:26,251 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:23:26,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:25" (1/1) ... [2018-10-23 20:23:26,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:25" (1/1) ... [2018-10-23 20:23:26,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:25" (1/1) ... [2018-10-23 20:23:26,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:25" (1/1) ... [2018-10-23 20:23:26,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:25" (1/1) ... [2018-10-23 20:23:26,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:25" (1/1) ... [2018-10-23 20:23:26,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:25" (1/1) ... [2018-10-23 20:23:26,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:23:26,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:23:26,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:23:26,732 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:23:26,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:23:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:23:26,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:23:26,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:23:40,577 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:23:40,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:23:40 BoogieIcfgContainer [2018-10-23 20:23:40,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:23:40,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:23:40,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:23:40,583 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:23:40,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:23:22" (1/3) ... [2018-10-23 20:23:40,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1edbb8d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:23:40, skipping insertion in model container [2018-10-23 20:23:40,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:23:25" (2/3) ... [2018-10-23 20:23:40,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1edbb8d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:23:40, skipping insertion in model container [2018-10-23 20:23:40,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:23:40" (3/3) ... [2018-10-23 20:23:40,588 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label56_true-unreach-call.c [2018-10-23 20:23:40,598 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:23:40,609 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:23:40,627 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:23:40,674 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:23:40,675 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:23:40,675 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:23:40,676 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:23:40,676 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:23:40,676 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:23:40,676 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:23:40,676 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:23:40,676 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:23:40,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-23 20:23:40,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-23 20:23:40,731 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:23:40,732 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:23:40,734 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:23:40,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:23:40,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1704727530, now seen corresponding path program 1 times [2018-10-23 20:23:40,742 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:23:40,743 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:23:40,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:23:40,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:23:40,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:23:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:23:41,562 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-23 20:23:41,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:23:41,819 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:23:41,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:23:41,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:23:41,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:23:41,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:23:41,846 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 5 states. [2018-10-23 20:23:42,135 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-23 20:24:01,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:24:01,983 INFO L93 Difference]: Finished difference Result 4624 states and 8784 transitions. [2018-10-23 20:24:01,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:24:01,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2018-10-23 20:24:01,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:24:02,040 INFO L225 Difference]: With dead ends: 4624 [2018-10-23 20:24:02,041 INFO L226 Difference]: Without dead ends: 3515 [2018-10-23 20:24:02,050 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:24:02,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3515 states. [2018-10-23 20:24:02,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3515 to 3514. [2018-10-23 20:24:02,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3514 states. [2018-10-23 20:24:02,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 5233 transitions. [2018-10-23 20:24:02,275 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 5233 transitions. Word has length 54 [2018-10-23 20:24:02,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:24:02,276 INFO L481 AbstractCegarLoop]: Abstraction has 3514 states and 5233 transitions. [2018-10-23 20:24:02,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:24:02,277 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 5233 transitions. [2018-10-23 20:24:02,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-23 20:24:02,289 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:24:02,290 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:24:02,290 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:24:02,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:24:02,291 INFO L82 PathProgramCache]: Analyzing trace with hash 2056859445, now seen corresponding path program 1 times [2018-10-23 20:24:02,291 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:24:02,291 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:24:02,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:24:02,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:24:02,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:24:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:24:02,657 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-10-23 20:24:02,658 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:24:02,658 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:24:02,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:24:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:24:02,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:24:03,171 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 26 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:24:03,194 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:24:03,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 6 [2018-10-23 20:24:03,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:24:03,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:24:03,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:24:03,197 INFO L87 Difference]: Start difference. First operand 3514 states and 5233 transitions. Second operand 7 states. [2018-10-23 20:24:05,009 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-23 20:24:34,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:24:34,370 INFO L93 Difference]: Finished difference Result 17359 states and 28808 transitions. [2018-10-23 20:24:34,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-23 20:24:34,371 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2018-10-23 20:24:34,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:24:34,446 INFO L225 Difference]: With dead ends: 17359 [2018-10-23 20:24:34,447 INFO L226 Difference]: Without dead ends: 14635 [2018-10-23 20:24:34,454 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-10-23 20:24:34,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14635 states. [2018-10-23 20:24:34,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14635 to 13039. [2018-10-23 20:24:34,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13039 states. [2018-10-23 20:24:34,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13039 states to 13039 states and 18016 transitions. [2018-10-23 20:24:34,845 INFO L78 Accepts]: Start accepts. Automaton has 13039 states and 18016 transitions. Word has length 180 [2018-10-23 20:24:34,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:24:34,846 INFO L481 AbstractCegarLoop]: Abstraction has 13039 states and 18016 transitions. [2018-10-23 20:24:34,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:24:34,847 INFO L276 IsEmpty]: Start isEmpty. Operand 13039 states and 18016 transitions. [2018-10-23 20:24:34,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-10-23 20:24:34,857 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:24:34,858 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:24:34,858 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:24:34,858 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:24:34,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1411327496, now seen corresponding path program 1 times [2018-10-23 20:24:34,859 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:24:34,859 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:24:34,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:24:34,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:24:34,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:24:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:24:35,415 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 103 proven. 66 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-23 20:24:35,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:24:35,416 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:24:35,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:24:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:24:35,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:24:35,653 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-23 20:24:35,675 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:24:35,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-23 20:24:35,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:24:35,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:24:35,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:24:35,677 INFO L87 Difference]: Start difference. First operand 13039 states and 18016 transitions. Second operand 5 states. [2018-10-23 20:24:59,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:24:59,414 INFO L93 Difference]: Finished difference Result 71068 states and 103705 transitions. [2018-10-23 20:24:59,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 20:24:59,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2018-10-23 20:24:59,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:24:59,584 INFO L225 Difference]: With dead ends: 71068 [2018-10-23 20:24:59,584 INFO L226 Difference]: Without dead ends: 56447 [2018-10-23 20:24:59,614 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:24:59,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56447 states. [2018-10-23 20:25:00,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56447 to 52492. [2018-10-23 20:25:00,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52492 states. [2018-10-23 20:25:00,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52492 states to 52492 states and 65753 transitions. [2018-10-23 20:25:00,368 INFO L78 Accepts]: Start accepts. Automaton has 52492 states and 65753 transitions. Word has length 312 [2018-10-23 20:25:00,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:25:00,368 INFO L481 AbstractCegarLoop]: Abstraction has 52492 states and 65753 transitions. [2018-10-23 20:25:00,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:25:00,369 INFO L276 IsEmpty]: Start isEmpty. Operand 52492 states and 65753 transitions. [2018-10-23 20:25:00,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-10-23 20:25:00,388 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:25:00,388 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:25:00,388 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:25:00,389 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:25:00,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1623173960, now seen corresponding path program 1 times [2018-10-23 20:25:00,389 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:25:00,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:25:00,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:25:00,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:25:00,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:25:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:25:01,309 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-10-23 20:25:01,310 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:25:01,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:25:01,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:25:01,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:25:01,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:25:01,312 INFO L87 Difference]: Start difference. First operand 52492 states and 65753 transitions. Second operand 4 states. [2018-10-23 20:25:14,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:25:14,527 INFO L93 Difference]: Finished difference Result 138904 states and 175283 transitions. [2018-10-23 20:25:14,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:25:14,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 422 [2018-10-23 20:25:14,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:25:14,682 INFO L225 Difference]: With dead ends: 138904 [2018-10-23 20:25:14,683 INFO L226 Difference]: Without dead ends: 87202 [2018-10-23 20:25:14,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:25:14,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87202 states. [2018-10-23 20:25:16,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87202 to 82439. [2018-10-23 20:25:16,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82439 states. [2018-10-23 20:25:16,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82439 states to 82439 states and 99942 transitions. [2018-10-23 20:25:16,152 INFO L78 Accepts]: Start accepts. Automaton has 82439 states and 99942 transitions. Word has length 422 [2018-10-23 20:25:16,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:25:16,152 INFO L481 AbstractCegarLoop]: Abstraction has 82439 states and 99942 transitions. [2018-10-23 20:25:16,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:25:16,153 INFO L276 IsEmpty]: Start isEmpty. Operand 82439 states and 99942 transitions. [2018-10-23 20:25:16,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2018-10-23 20:25:16,174 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:25:16,175 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:25:16,175 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:25:16,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:25:16,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1339287675, now seen corresponding path program 1 times [2018-10-23 20:25:16,176 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:25:16,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:25:16,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:25:16,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:25:16,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:25:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:25:16,808 INFO L134 CoverageAnalysis]: Checked inductivity of 776 backedges. 580 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2018-10-23 20:25:16,809 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:25:16,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:25:16,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:25:16,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:25:16,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:25:16,812 INFO L87 Difference]: Start difference. First operand 82439 states and 99942 transitions. Second operand 5 states. [2018-10-23 20:25:37,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:25:37,644 INFO L93 Difference]: Finished difference Result 317268 states and 381420 transitions. [2018-10-23 20:25:37,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:25:37,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 475 [2018-10-23 20:25:37,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:25:38,077 INFO L225 Difference]: With dead ends: 317268 [2018-10-23 20:25:38,078 INFO L226 Difference]: Without dead ends: 235619 [2018-10-23 20:25:38,169 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:25:38,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235619 states. [2018-10-23 20:25:41,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235619 to 218089. [2018-10-23 20:25:41,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218089 states. [2018-10-23 20:25:41,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218089 states to 218089 states and 255036 transitions. [2018-10-23 20:25:41,339 INFO L78 Accepts]: Start accepts. Automaton has 218089 states and 255036 transitions. Word has length 475 [2018-10-23 20:25:41,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:25:41,339 INFO L481 AbstractCegarLoop]: Abstraction has 218089 states and 255036 transitions. [2018-10-23 20:25:41,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:25:41,339 INFO L276 IsEmpty]: Start isEmpty. Operand 218089 states and 255036 transitions. [2018-10-23 20:25:41,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2018-10-23 20:25:41,395 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:25:41,396 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:25:41,396 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:25:41,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:25:41,396 INFO L82 PathProgramCache]: Analyzing trace with hash 2104047600, now seen corresponding path program 1 times [2018-10-23 20:25:41,397 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:25:41,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:25:41,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:25:41,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:25:41,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:25:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:25:42,063 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-23 20:25:42,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:25:42,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:25:42,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:25:42,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:25:42,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:25:42,066 INFO L87 Difference]: Start difference. First operand 218089 states and 255036 transitions. Second operand 4 states. [2018-10-23 20:25:53,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:25:53,476 INFO L93 Difference]: Finished difference Result 434561 states and 508907 transitions. [2018-10-23 20:25:53,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:25:53,477 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 594 [2018-10-23 20:25:53,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:25:53,729 INFO L225 Difference]: With dead ends: 434561 [2018-10-23 20:25:53,729 INFO L226 Difference]: Without dead ends: 217262 [2018-10-23 20:25:53,826 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 [2018-10-23 20:25:53,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217262 states. [2018-10-23 20:25:56,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217262 to 215685. [2018-10-23 20:25:56,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215685 states. [2018-10-23 20:25:57,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215685 states to 215685 states and 239546 transitions. [2018-10-23 20:25:57,207 INFO L78 Accepts]: Start accepts. Automaton has 215685 states and 239546 transitions. Word has length 594 [2018-10-23 20:25:57,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:25:57,208 INFO L481 AbstractCegarLoop]: Abstraction has 215685 states and 239546 transitions. [2018-10-23 20:25:57,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:25:57,208 INFO L276 IsEmpty]: Start isEmpty. Operand 215685 states and 239546 transitions. [2018-10-23 20:25:57,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1006 [2018-10-23 20:25:57,326 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:25:57,327 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:25:57,327 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:25:57,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:25:57,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1268954467, now seen corresponding path program 1 times [2018-10-23 20:25:57,328 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:25:57,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:25:57,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:25:57,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:25:57,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:25:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:26:00,225 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 52 proven. 484 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-23 20:26:00,226 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:26:00,226 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:26:00,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:26:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:26:00,512 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:26:03,290 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 564 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2018-10-23 20:26:03,312 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:26:03,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-23 20:26:03,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 20:26:03,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 20:26:03,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:26:03,315 INFO L87 Difference]: Start difference. First operand 215685 states and 239546 transitions. Second operand 8 states. [2018-10-23 20:27:10,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:27:10,415 INFO L93 Difference]: Finished difference Result 677764 states and 750069 transitions. [2018-10-23 20:27:10,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-23 20:27:10,416 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1005 [2018-10-23 20:27:10,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:27:10,829 INFO L225 Difference]: With dead ends: 677764 [2018-10-23 20:27:10,830 INFO L226 Difference]: Without dead ends: 371228 [2018-10-23 20:27:10,925 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1017 GetRequests, 1003 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2018-10-23 20:27:11,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371228 states. [2018-10-23 20:27:14,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371228 to 291373. [2018-10-23 20:27:14,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291373 states. [2018-10-23 20:27:14,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291373 states to 291373 states and 318650 transitions. [2018-10-23 20:27:14,386 INFO L78 Accepts]: Start accepts. Automaton has 291373 states and 318650 transitions. Word has length 1005 [2018-10-23 20:27:14,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:27:14,387 INFO L481 AbstractCegarLoop]: Abstraction has 291373 states and 318650 transitions. [2018-10-23 20:27:14,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 20:27:14,387 INFO L276 IsEmpty]: Start isEmpty. Operand 291373 states and 318650 transitions. [2018-10-23 20:27:14,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1225 [2018-10-23 20:27:14,470 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:27:14,472 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:27:14,472 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:27:14,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:27:14,473 INFO L82 PathProgramCache]: Analyzing trace with hash -333553505, now seen corresponding path program 1 times [2018-10-23 20:27:14,473 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:27:14,473 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:27:14,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:27:14,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:27:14,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:27:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-23 20:27:16,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 942 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-10-23 20:27:16,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:27:16,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:27:16,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:27:16,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:27:16,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:27:16,965 INFO L87 Difference]: Start difference. First operand 291373 states and 318650 transitions. Second operand 3 states. [2018-10-23 20:27:16,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-23 20:27:16,966 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:27:16,974 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:27:16,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:27:16 BoogieIcfgContainer [2018-10-23 20:27:16,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:27:16,975 INFO L168 Benchmark]: Toolchain (without parser) took 234069.04 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-23 20:27:16,977 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:27:16,977 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2517.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-23 20:27:16,979 INFO L168 Benchmark]: Boogie Procedure Inliner took 823.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 814.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. [2018-10-23 20:27:16,980 INFO L168 Benchmark]: Boogie Preprocessor took 480.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 80.7 MB). Peak memory consumption was 80.7 MB. Max. memory is 7.1 GB. [2018-10-23 20:27:16,981 INFO L168 Benchmark]: RCFGBuilder took 13846.69 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 242.7 MB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 37.8 MB). Peak memory consumption was 587.3 MB. Max. memory is 7.1 GB. [2018-10-23 20:27:16,982 INFO L168 Benchmark]: TraceAbstraction took 216394.94 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 2.7 GB in the end (delta: -619.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-23 20:27:16,991 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2517.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 823.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 814.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 480.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 80.7 MB). Peak memory consumption was 80.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13846.69 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 242.7 MB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 37.8 MB). Peak memory consumption was 587.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216394.94 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 2.7 GB in the end (delta: -619.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 171]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 171). Cancelled while BasicCegarLoop was constructing difference of abstraction (291373states) and FLOYD_HOARE automaton (currently 2 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 216.3s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 189.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5230 SDtfs, 36148 SDslu, 3467 SDs, 0 SdLazy, 76364 SolverSat, 22066 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 156.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1541 GetRequests, 1499 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=291373occurred 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: 12.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 109277 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 5763 NumberOfCodeBlocks, 5763 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 5752 ConstructedInterpolants, 90 QuantifiedInterpolants, 10899588 SizeOfPredicates, 7 NumberOfNonLiveVariables, 1835 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 4027/4603 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown