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/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 02:59:28,067 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 02:59:28,071 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 02:59:28,089 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 02:59:28,090 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 02:59:28,091 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 02:59:28,093 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 02:59:28,096 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 02:59:28,098 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 02:59:28,099 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 02:59:28,101 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 02:59:28,102 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 02:59:28,103 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 02:59:28,104 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 02:59:28,113 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 02:59:28,114 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 02:59:28,115 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 02:59:28,119 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 02:59:28,121 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 02:59:28,126 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 02:59:28,128 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 02:59:28,129 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 02:59:28,133 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 02:59:28,142 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 02:59:28,143 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 02:59:28,145 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 02:59:28,146 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 02:59:28,146 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 02:59:28,172 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 02:59:28,172 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 02:59:28,175 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 02:59:28,175 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 02:59:28,175 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 02:59:28,176 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 02:59:28,176 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 02:59:28,176 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 02:59:28,176 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 02:59:28,176 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 02:59:28,177 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 02:59:28,177 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 02:59:28,178 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 02:59:28,179 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 02:59:28,179 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 02:59:28,179 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 02:59:28,179 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 02:59:28,180 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 02:59:28,181 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 02:59:28,181 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 02:59:28,181 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 02:59:28,181 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 02:59:28,182 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 02:59:28,182 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 02:59:28,182 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 02:59:28,182 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 02:59:28,182 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 02:59:28,182 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 02:59:28,183 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 02:59:28,183 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 02:59:28,183 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 02:59:28,183 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 02:59:28,183 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 02:59:28,184 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 02:59:28,251 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 02:59:28,267 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 02:59:28,272 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 02:59:28,274 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 02:59:28,274 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 02:59:28,275 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label59_true-unreach-call.c [2018-10-27 02:59:28,338 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7fb77cc45/5c95f2b34c7644fba5a529873f83fb1e/FLAGdea3cddf1 [2018-10-27 02:59:29,268 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 02:59:29,270 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label59_true-unreach-call.c [2018-10-27 02:59:29,305 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7fb77cc45/5c95f2b34c7644fba5a529873f83fb1e/FLAGdea3cddf1 [2018-10-27 02:59:29,323 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7fb77cc45/5c95f2b34c7644fba5a529873f83fb1e [2018-10-27 02:59:29,338 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 02:59:29,340 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 02:59:29,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 02:59:29,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 02:59:29,348 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 02:59:29,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:59:29" (1/1) ... [2018-10-27 02:59:29,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8de4687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:29, skipping insertion in model container [2018-10-27 02:59:29,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:59:29" (1/1) ... [2018-10-27 02:59:29,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 02:59:29,580 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 02:59:30,940 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:59:30,945 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 02:59:31,704 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:59:31,742 INFO L193 MainTranslator]: Completed translation [2018-10-27 02:59:31,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:31 WrapperNode [2018-10-27 02:59:31,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 02:59:31,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 02:59:31,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 02:59:31,745 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 02:59:31,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:31" (1/1) ... [2018-10-27 02:59:31,827 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:31" (1/1) ... [2018-10-27 02:59:32,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 02:59:32,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 02:59:32,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 02:59:32,439 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 02:59:32,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:31" (1/1) ... [2018-10-27 02:59:32,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:31" (1/1) ... [2018-10-27 02:59:32,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:31" (1/1) ... [2018-10-27 02:59:32,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:31" (1/1) ... [2018-10-27 02:59:32,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:31" (1/1) ... [2018-10-27 02:59:32,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:31" (1/1) ... [2018-10-27 02:59:32,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:31" (1/1) ... [2018-10-27 02:59:32,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 02:59:32,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 02:59:32,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 02:59:32,780 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 02:59:32,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:31" (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 [2018-10-27 02:59:32,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 02:59:32,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 02:59:32,853 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 02:59:32,854 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 02:59:32,854 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 02:59:32,854 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 02:59:32,854 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 02:59:32,854 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 02:59:32,854 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 02:59:32,855 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 02:59:32,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 02:59:32,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 02:59:32,855 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 02:59:32,856 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 02:59:43,757 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 02:59:43,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:59:43 BoogieIcfgContainer [2018-10-27 02:59:43,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 02:59:43,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 02:59:43,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 02:59:43,764 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 02:59:43,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:59:29" (1/3) ... [2018-10-27 02:59:43,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d9890d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:59:43, skipping insertion in model container [2018-10-27 02:59:43,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:59:31" (2/3) ... [2018-10-27 02:59:43,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d9890d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:59:43, skipping insertion in model container [2018-10-27 02:59:43,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:59:43" (3/3) ... [2018-10-27 02:59:43,768 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label59_true-unreach-call.c [2018-10-27 02:59:43,778 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 02:59:43,787 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 02:59:43,805 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 02:59:43,860 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 02:59:43,861 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 02:59:43,861 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 02:59:43,861 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 02:59:43,861 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 02:59:43,861 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 02:59:43,861 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 02:59:43,862 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 02:59:43,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-27 02:59:43,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-27 02:59:43,919 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:59:43,920 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] [2018-10-27 02:59:43,922 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:59:43,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:59:43,929 INFO L82 PathProgramCache]: Analyzing trace with hash -760463861, now seen corresponding path program 1 times [2018-10-27 02:59:43,932 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:59:43,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:59:43,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:59:43,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:59:43,983 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:59:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:59:44,463 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-27 02:59:44,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:59:44,483 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:59:44,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 02:59:44,484 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:59:44,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 02:59:44,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 02:59:44,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:59:44,513 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-10-27 03:00:01,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:00:01,616 INFO L93 Difference]: Finished difference Result 4065 states and 7606 transitions. [2018-10-27 03:00:01,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 03:00:01,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2018-10-27 03:00:01,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:00:01,686 INFO L225 Difference]: With dead ends: 4065 [2018-10-27 03:00:01,686 INFO L226 Difference]: Without dead ends: 2939 [2018-10-27 03:00:01,703 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:00:01,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2018-10-27 03:00:01,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1972. [2018-10-27 03:00:01,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1972 states. [2018-10-27 03:00:01,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 3594 transitions. [2018-10-27 03:00:01,919 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 3594 transitions. Word has length 53 [2018-10-27 03:00:01,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:00:01,920 INFO L481 AbstractCegarLoop]: Abstraction has 1972 states and 3594 transitions. [2018-10-27 03:00:01,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 03:00:01,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 3594 transitions. [2018-10-27 03:00:01,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-27 03:00:01,933 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:00:01,934 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:00:01,934 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:00:01,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:00:01,935 INFO L82 PathProgramCache]: Analyzing trace with hash 9264363, now seen corresponding path program 1 times [2018-10-27 03:00:01,935 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:00:01,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:00:01,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:00:01,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:00:01,937 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:00:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:00:02,407 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:00:02,407 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:00:02,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:00:02,408 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:00:02,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:00:02,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:00:02,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:00:02,411 INFO L87 Difference]: Start difference. First operand 1972 states and 3594 transitions. Second operand 6 states. [2018-10-27 03:00:19,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:00:19,889 INFO L93 Difference]: Finished difference Result 7229 states and 13602 transitions. [2018-10-27 03:00:19,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:00:19,889 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-10-27 03:00:19,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:00:19,924 INFO L225 Difference]: With dead ends: 7229 [2018-10-27 03:00:19,924 INFO L226 Difference]: Without dead ends: 5263 [2018-10-27 03:00:19,938 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 03:00:19,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5263 states. [2018-10-27 03:00:20,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5263 to 5234. [2018-10-27 03:00:20,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5234 states. [2018-10-27 03:00:20,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 8445 transitions. [2018-10-27 03:00:20,231 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 8445 transitions. Word has length 126 [2018-10-27 03:00:20,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:00:20,232 INFO L481 AbstractCegarLoop]: Abstraction has 5234 states and 8445 transitions. [2018-10-27 03:00:20,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:00:20,232 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 8445 transitions. [2018-10-27 03:00:20,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-27 03:00:20,244 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:00:20,245 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:00:20,245 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:00:20,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:00:20,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1015447532, now seen corresponding path program 1 times [2018-10-27 03:00:20,246 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:00:20,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:00:20,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:00:20,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:00:20,247 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:00:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:00:20,460 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:00:20,461 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:00:20,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 03:00:20,461 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:00:20,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 03:00:20,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 03:00:20,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 03:00:20,462 INFO L87 Difference]: Start difference. First operand 5234 states and 8445 transitions. Second operand 5 states. [2018-10-27 03:00:36,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:00:36,494 INFO L93 Difference]: Finished difference Result 15741 states and 26186 transitions. [2018-10-27 03:00:36,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 03:00:36,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2018-10-27 03:00:36,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:00:36,561 INFO L225 Difference]: With dead ends: 15741 [2018-10-27 03:00:36,561 INFO L226 Difference]: Without dead ends: 10513 [2018-10-27 03:00:36,586 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:00:36,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10513 states. [2018-10-27 03:00:36,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10513 to 10309. [2018-10-27 03:00:36,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10309 states. [2018-10-27 03:00:36,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10309 states to 10309 states and 15531 transitions. [2018-10-27 03:00:36,945 INFO L78 Accepts]: Start accepts. Automaton has 10309 states and 15531 transitions. Word has length 152 [2018-10-27 03:00:36,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:00:36,946 INFO L481 AbstractCegarLoop]: Abstraction has 10309 states and 15531 transitions. [2018-10-27 03:00:36,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 03:00:36,946 INFO L276 IsEmpty]: Start isEmpty. Operand 10309 states and 15531 transitions. [2018-10-27 03:00:36,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-10-27 03:00:36,951 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:00:36,954 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:00:36,956 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:00:36,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:00:36,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1469910122, now seen corresponding path program 1 times [2018-10-27 03:00:36,956 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:00:36,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:00:36,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:00:36,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:00:36,958 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:00:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:00:37,523 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:00:37,523 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:00:37,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 03:00:37,523 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:00:37,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 03:00:37,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 03:00:37,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 03:00:37,525 INFO L87 Difference]: Start difference. First operand 10309 states and 15531 transitions. Second operand 5 states. [2018-10-27 03:01:09,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:01:09,391 INFO L93 Difference]: Finished difference Result 32117 states and 50257 transitions. [2018-10-27 03:01:09,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 03:01:09,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2018-10-27 03:01:09,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:01:09,508 INFO L225 Difference]: With dead ends: 32117 [2018-10-27 03:01:09,508 INFO L226 Difference]: Without dead ends: 21814 [2018-10-27 03:01:09,561 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:01:09,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21814 states. [2018-10-27 03:01:10,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21814 to 21590. [2018-10-27 03:01:10,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21590 states. [2018-10-27 03:01:10,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21590 states to 21590 states and 31817 transitions. [2018-10-27 03:01:10,102 INFO L78 Accepts]: Start accepts. Automaton has 21590 states and 31817 transitions. Word has length 159 [2018-10-27 03:01:10,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:01:10,102 INFO L481 AbstractCegarLoop]: Abstraction has 21590 states and 31817 transitions. [2018-10-27 03:01:10,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 03:01:10,103 INFO L276 IsEmpty]: Start isEmpty. Operand 21590 states and 31817 transitions. [2018-10-27 03:01:10,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-27 03:01:10,107 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:01:10,107 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:01:10,108 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:01:10,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:01:10,108 INFO L82 PathProgramCache]: Analyzing trace with hash 581276394, now seen corresponding path program 1 times [2018-10-27 03:01:10,108 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:01:10,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:01:10,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:01:10,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:01:10,110 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:01:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:01:10,260 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:01:10,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:01:10,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 03:01:10,261 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:01:10,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 03:01:10,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 03:01:10,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:01:10,262 INFO L87 Difference]: Start difference. First operand 21590 states and 31817 transitions. Second operand 3 states. [2018-10-27 03:01:16,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:01:16,345 INFO L93 Difference]: Finished difference Result 43176 states and 63796 transitions. [2018-10-27 03:01:16,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 03:01:16,346 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2018-10-27 03:01:16,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:01:16,735 INFO L225 Difference]: With dead ends: 43176 [2018-10-27 03:01:16,735 INFO L226 Difference]: Without dead ends: 21592 [2018-10-27 03:01:16,787 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 03:01:16,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21592 states. [2018-10-27 03:01:17,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21592 to 21590. [2018-10-27 03:01:17,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21590 states. [2018-10-27 03:01:17,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21590 states to 21590 states and 29329 transitions. [2018-10-27 03:01:17,275 INFO L78 Accepts]: Start accepts. Automaton has 21590 states and 29329 transitions. Word has length 169 [2018-10-27 03:01:17,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:01:17,276 INFO L481 AbstractCegarLoop]: Abstraction has 21590 states and 29329 transitions. [2018-10-27 03:01:17,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 03:01:17,276 INFO L276 IsEmpty]: Start isEmpty. Operand 21590 states and 29329 transitions. [2018-10-27 03:01:17,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-27 03:01:17,281 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:01:17,282 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:01:17,282 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:01:17,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:01:17,283 INFO L82 PathProgramCache]: Analyzing trace with hash -936970546, now seen corresponding path program 1 times [2018-10-27 03:01:17,283 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:01:17,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:01:17,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:01:17,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:01:17,284 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:01:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:01:17,539 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:01:17,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:01:17,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 03:01:17,540 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:01:17,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 03:01:17,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 03:01:17,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:01:17,541 INFO L87 Difference]: Start difference. First operand 21590 states and 29329 transitions. Second operand 4 states. [2018-10-27 03:01:30,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:01:30,963 INFO L93 Difference]: Finished difference Result 64717 states and 93646 transitions. [2018-10-27 03:01:30,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 03:01:30,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2018-10-27 03:01:30,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:01:31,172 INFO L225 Difference]: With dead ends: 64717 [2018-10-27 03:01:31,173 INFO L226 Difference]: Without dead ends: 43133 [2018-10-27 03:01:31,643 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 [2018-10-27 03:01:31,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43133 states. [2018-10-27 03:01:32,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43133 to 43121. [2018-10-27 03:01:32,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43121 states. [2018-10-27 03:01:32,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43121 states to 43121 states and 59245 transitions. [2018-10-27 03:01:32,518 INFO L78 Accepts]: Start accepts. Automaton has 43121 states and 59245 transitions. Word has length 174 [2018-10-27 03:01:32,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:01:32,518 INFO L481 AbstractCegarLoop]: Abstraction has 43121 states and 59245 transitions. [2018-10-27 03:01:32,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 03:01:32,520 INFO L276 IsEmpty]: Start isEmpty. Operand 43121 states and 59245 transitions. [2018-10-27 03:01:32,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-27 03:01:32,534 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:01:32,539 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 03:01:32,539 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:01:32,539 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:01:32,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1840466883, now seen corresponding path program 1 times [2018-10-27 03:01:32,540 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:01:32,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:01:32,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:01:32,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:01:32,541 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:01:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:01:32,825 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:01:33,061 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 92 proven. 73 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 03:01:33,062 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:01:33,062 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:01:33,064 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-10-27 03:01:33,066 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2951], [2953], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3159], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3347], [3352], [3354], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-27 03:01:33,143 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:01:33,143 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:01:37,111 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:01:44,778 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:01:44,780 INFO L272 AbstractInterpreter]: Visited 123 different actions 123 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 03:01:44,795 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:01:44,795 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:01:51,293 INFO L227 lantSequenceWeakener]: Weakened 228 states. On average, predicates are now at 71.69% of their original sizes. [2018-10-27 03:01:51,294 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:01:52,927 INFO L415 sIntCurrentIteration]: We unified 250 AI predicates to 250 [2018-10-27 03:01:52,927 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:01:52,928 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:01:52,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-10-27 03:01:52,929 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:01:52,929 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-27 03:01:52,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-27 03:01:52,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-27 03:01:52,930 INFO L87 Difference]: Start difference. First operand 43121 states and 59245 transitions. Second operand 11 states. Received shutdown request... [2018-10-27 03:03:13,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 03:03:13,146 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:03:13,152 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:03:13,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:03:13 BoogieIcfgContainer [2018-10-27 03:03:13,153 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:03:13,154 INFO L168 Benchmark]: Toolchain (without parser) took 223814.65 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -452.5 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-27 03:03:13,155 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-27 03:03:13,160 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2402.03 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: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-10-27 03:03:13,160 INFO L168 Benchmark]: Boogie Procedure Inliner took 694.63 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 834.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2018-10-27 03:03:13,163 INFO L168 Benchmark]: Boogie Preprocessor took 340.12 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 7.1 GB. [2018-10-27 03:03:13,165 INFO L168 Benchmark]: RCFGBuilder took 10978.62 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 193.5 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -21.7 MB). Peak memory consumption was 686.3 MB. Max. memory is 7.1 GB. [2018-10-27 03:03:13,167 INFO L168 Benchmark]: TraceAbstraction took 209393.56 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 383.4 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-27 03:03:13,172 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 2402.03 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: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 694.63 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 834.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 340.12 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10978.62 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 193.5 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -21.7 MB). Peak memory consumption was 686.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209393.56 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 383.4 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 150]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 150). Cancelled while BasicCegarLoop was constructing difference of abstraction (43121states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (2120 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 209.3s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 183.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5113 SDtfs, 18258 SDslu, 2421 SDs, 0 SdLazy, 32249 SolverSat, 8241 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 147.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 297 GetRequests, 259 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43121occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.7s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9962830769230768 AbsIntWeakeningRatio, 0.112 AbsIntAvgWeakeningVarsNumRemoved, 30.128 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 6 MinimizatonAttempts, 1438 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 1084 NumberOfCodeBlocks, 1084 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1077 ConstructedInterpolants, 0 QuantifiedInterpolants, 486629 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 327/400 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown