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/Problem16_label46_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:11:57,906 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:11:57,908 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:11:57,920 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:11:57,920 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:11:57,921 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:11:57,923 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:11:57,924 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:11:57,926 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:11:57,927 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:11:57,928 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:11:57,928 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:11:57,929 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:11:57,930 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:11:57,931 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:11:57,932 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:11:57,933 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:11:57,935 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:11:57,937 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:11:57,941 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:11:57,943 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:11:57,946 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:11:57,948 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 00:11:57,956 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 00:11:57,982 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:11:57,983 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:11:57,987 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:11:57,987 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:11:57,987 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:11:57,987 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:11:57,987 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 00:11:57,988 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:11:57,988 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 00:11:57,988 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 00:11:57,988 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 00:11:57,988 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:11:57,989 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:11:57,990 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:11:57,990 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:11:57,990 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:11:57,990 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:11:57,990 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:11:57,991 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:11:57,992 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:11:57,992 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:11:57,992 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:11:57,992 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:11:57,992 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:11:57,993 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:11:57,993 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:11:57,993 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:11:57,993 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:11:57,993 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 00:11:57,993 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:11:57,994 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:11:57,994 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 00:11:57,995 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 00:11:57,995 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 00:11:58,051 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:11:58,063 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:11:58,067 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:11:58,069 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:11:58,069 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:11:58,070 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label46_false-unreach-call.c [2018-10-27 00:11:58,129 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0af55480a/591a6328e6174fd3b6c19896c3300df2/FLAGcb49ce34a [2018-10-27 00:11:58,769 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:11:58,770 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label46_false-unreach-call.c [2018-10-27 00:11:58,790 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0af55480a/591a6328e6174fd3b6c19896c3300df2/FLAGcb49ce34a [2018-10-27 00:11:58,809 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0af55480a/591a6328e6174fd3b6c19896c3300df2 [2018-10-27 00:11:58,822 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:11:58,824 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 00:11:58,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:11:58,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:11:58,832 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:11:58,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:11:58" (1/1) ... [2018-10-27 00:11:58,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b326c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:11:58, skipping insertion in model container [2018-10-27 00:11:58,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:11:58" (1/1) ... [2018-10-27 00:11:58,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:11:58,941 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:11:59,709 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:11:59,714 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:11:59,957 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:11:59,977 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:11:59,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:11:59 WrapperNode [2018-10-27 00:11:59,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:11:59,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:11:59,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:11:59,979 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:11:59,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:11:59" (1/1) ... [2018-10-27 00:12:00,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:11:59" (1/1) ... [2018-10-27 00:12:00,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:12:00,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:12:00,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:12:00,293 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:12:00,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:11:59" (1/1) ... [2018-10-27 00:12:00,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:11:59" (1/1) ... [2018-10-27 00:12:00,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:11:59" (1/1) ... [2018-10-27 00:12:00,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:11:59" (1/1) ... [2018-10-27 00:12:00,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:11:59" (1/1) ... [2018-10-27 00:12:00,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:11:59" (1/1) ... [2018-10-27 00:12:00,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:11:59" (1/1) ... [2018-10-27 00:12:00,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:12:00,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:12:00,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:12:00,465 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:12:00,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:11:59" (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 00:12:00,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:12:00,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:12:00,530 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 00:12:00,530 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 00:12:00,530 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 00:12:00,530 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 00:12:00,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:12:00,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:12:00,531 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:12:00,531 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:12:07,020 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:12:07,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:12:07 BoogieIcfgContainer [2018-10-27 00:12:07,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:12:07,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:12:07,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:12:07,027 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:12:07,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:11:58" (1/3) ... [2018-10-27 00:12:07,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717d24f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:12:07, skipping insertion in model container [2018-10-27 00:12:07,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:11:59" (2/3) ... [2018-10-27 00:12:07,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717d24f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:12:07, skipping insertion in model container [2018-10-27 00:12:07,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:12:07" (3/3) ... [2018-10-27 00:12:07,030 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label46_false-unreach-call.c [2018-10-27 00:12:07,040 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:12:07,048 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:12:07,066 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:12:07,107 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:12:07,107 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:12:07,107 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:12:07,107 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:12:07,108 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:12:07,108 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:12:07,108 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:12:07,108 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:12:07,140 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 00:12:07,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-27 00:12:07,147 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:12:07,148 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] [2018-10-27 00:12:07,151 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:12:07,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:12:07,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1596668835, now seen corresponding path program 1 times [2018-10-27 00:12:07,159 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:12:07,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:12:07,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:12:07,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:12:07,208 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:12:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:12:07,538 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:12:07,639 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 00:12:07,642 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:12:07,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 00:12:07,642 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:12:07,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 00:12:07,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 00:12:07,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:12:07,679 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-27 00:12:12,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:12:12,122 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-27 00:12:12,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 00:12:12,128 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-10-27 00:12:12,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:12:12,156 INFO L225 Difference]: With dead ends: 1156 [2018-10-27 00:12:12,156 INFO L226 Difference]: Without dead ends: 744 [2018-10-27 00:12:12,166 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:12:12,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-27 00:12:12,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-27 00:12:12,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-27 00:12:12,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1343 transitions. [2018-10-27 00:12:12,269 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1343 transitions. Word has length 23 [2018-10-27 00:12:12,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:12:12,271 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1343 transitions. [2018-10-27 00:12:12,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 00:12:12,271 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1343 transitions. [2018-10-27 00:12:12,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-27 00:12:12,279 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:12:12,279 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 00:12:12,280 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:12:12,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:12:12,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1825616223, now seen corresponding path program 1 times [2018-10-27 00:12:12,280 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:12:12,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:12:12,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:12:12,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:12:12,284 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:12:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:12:12,611 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:12:12,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:12:12,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:12:12,612 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:12:12,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:12:12,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:12:12,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:12:12,615 INFO L87 Difference]: Start difference. First operand 744 states and 1343 transitions. Second operand 6 states. [2018-10-27 00:12:20,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:12:20,659 INFO L93 Difference]: Finished difference Result 2846 states and 5292 transitions. [2018-10-27 00:12:20,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:12:20,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2018-10-27 00:12:20,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:12:20,679 INFO L225 Difference]: With dead ends: 2846 [2018-10-27 00:12:20,679 INFO L226 Difference]: Without dead ends: 2108 [2018-10-27 00:12:20,687 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 00:12:20,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2018-10-27 00:12:20,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2090. [2018-10-27 00:12:20,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2090 states. [2018-10-27 00:12:20,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3323 transitions. [2018-10-27 00:12:20,794 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3323 transitions. Word has length 96 [2018-10-27 00:12:20,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:12:20,795 INFO L481 AbstractCegarLoop]: Abstraction has 2090 states and 3323 transitions. [2018-10-27 00:12:20,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:12:20,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3323 transitions. [2018-10-27 00:12:20,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-27 00:12:20,801 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:12:20,801 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 00:12:20,801 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:12:20,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:12:20,802 INFO L82 PathProgramCache]: Analyzing trace with hash -925105612, now seen corresponding path program 1 times [2018-10-27 00:12:20,802 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:12:20,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:12:20,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:12:20,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:12:20,803 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:12:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:12:21,224 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:12:21,224 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:12:21,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:12:21,224 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:12:21,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:12:21,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:12:21,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:12:21,228 INFO L87 Difference]: Start difference. First operand 2090 states and 3323 transitions. Second operand 6 states. [2018-10-27 00:12:28,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:12:28,548 INFO L93 Difference]: Finished difference Result 5549 states and 9209 transitions. [2018-10-27 00:12:28,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:12:28,549 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-27 00:12:28,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:12:28,571 INFO L225 Difference]: With dead ends: 5549 [2018-10-27 00:12:28,571 INFO L226 Difference]: Without dead ends: 3465 [2018-10-27 00:12:28,585 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 00:12:28,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3465 states. [2018-10-27 00:12:28,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3465 to 3433. [2018-10-27 00:12:28,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3433 states. [2018-10-27 00:12:28,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3433 states to 3433 states and 5124 transitions. [2018-10-27 00:12:28,678 INFO L78 Accepts]: Start accepts. Automaton has 3433 states and 5124 transitions. Word has length 125 [2018-10-27 00:12:28,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:12:28,679 INFO L481 AbstractCegarLoop]: Abstraction has 3433 states and 5124 transitions. [2018-10-27 00:12:28,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:12:28,680 INFO L276 IsEmpty]: Start isEmpty. Operand 3433 states and 5124 transitions. [2018-10-27 00:12:28,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-27 00:12:28,686 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:12:28,686 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:12:28,686 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:12:28,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:12:28,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1605353442, now seen corresponding path program 1 times [2018-10-27 00:12:28,687 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:12:28,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:12:28,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:12:28,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:12:28,688 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:12:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:12:29,023 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:12:29,419 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 97 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 00:12:29,420 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:12:29,420 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:12:29,421 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-10-27 00:12:29,425 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [263], [265], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [800], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 00:12:29,517 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:12:29,518 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:12:31,788 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:12:31,789 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 00:12:31,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:12:31,800 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:12:33,755 INFO L227 lantSequenceWeakener]: Weakened 228 states. On average, predicates are now at 77.46% of their original sizes. [2018-10-27 00:12:33,755 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:12:34,256 INFO L415 sIntCurrentIteration]: We unified 235 AI predicates to 235 [2018-10-27 00:12:34,256 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:12:34,257 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 00:12:34,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 00:12:34,257 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:12:34,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 00:12:34,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 00:12:34,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 00:12:34,259 INFO L87 Difference]: Start difference. First operand 3433 states and 5124 transitions. Second operand 7 states. [2018-10-27 00:12:36,530 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:13:10,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:13:10,148 INFO L93 Difference]: Finished difference Result 7200 states and 10779 transitions. [2018-10-27 00:13:10,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:13:10,148 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 236 [2018-10-27 00:13:10,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:13:10,164 INFO L225 Difference]: With dead ends: 7200 [2018-10-27 00:13:10,165 INFO L226 Difference]: Without dead ends: 3773 [2018-10-27 00:13:10,174 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 236 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-27 00:13:10,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3773 states. [2018-10-27 00:13:10,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3773 to 3771. [2018-10-27 00:13:10,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3771 states. [2018-10-27 00:13:10,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 5470 transitions. [2018-10-27 00:13:10,263 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 5470 transitions. Word has length 236 [2018-10-27 00:13:10,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:13:10,263 INFO L481 AbstractCegarLoop]: Abstraction has 3771 states and 5470 transitions. [2018-10-27 00:13:10,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 00:13:10,264 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 5470 transitions. [2018-10-27 00:13:10,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-10-27 00:13:10,272 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:13:10,272 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:13:10,273 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:13:10,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:13:10,273 INFO L82 PathProgramCache]: Analyzing trace with hash 732549473, now seen corresponding path program 1 times [2018-10-27 00:13:10,273 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:13:10,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:13:10,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:13:10,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:13:10,275 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:13:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:13:10,642 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:13:11,142 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 54 proven. 206 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-27 00:13:11,143 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:13:11,143 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:13:11,143 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 329 with the following transitions: [2018-10-27 00:13:11,144 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [263], [265], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [800], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 00:13:11,149 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:13:11,149 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:13:12,003 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:13:17,722 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:13:17,722 INFO L272 AbstractInterpreter]: Visited 120 different actions 351 times. Merged at 5 different actions 13 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 00:13:17,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:13:17,732 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:13:21,728 INFO L227 lantSequenceWeakener]: Weakened 70 states. On average, predicates are now at 78.47% of their original sizes. [2018-10-27 00:13:21,729 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:14:26,195 INFO L415 sIntCurrentIteration]: We unified 327 AI predicates to 327 [2018-10-27 00:14:26,195 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:14:26,195 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 00:14:26,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-10-27 00:14:26,196 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:14:26,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-27 00:14:26,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-27 00:14:26,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2018-10-27 00:14:26,197 INFO L87 Difference]: Start difference. First operand 3771 states and 5470 transitions. Second operand 22 states. Received shutdown request... [2018-10-27 00:15:58,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 00:15:58,454 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 00:15:58,460 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 00:15:58,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:15:58 BoogieIcfgContainer [2018-10-27 00:15:58,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:15:58,462 INFO L168 Benchmark]: Toolchain (without parser) took 239638.48 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -468.7 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-27 00:15:58,463 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 00:15:58,463 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1152.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-27 00:15:58,464 INFO L168 Benchmark]: Boogie Procedure Inliner took 313.78 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -837.5 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-10-27 00:15:58,465 INFO L168 Benchmark]: Boogie Preprocessor took 171.43 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2018-10-27 00:15:58,466 INFO L168 Benchmark]: RCFGBuilder took 6557.05 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 250.7 MB). Peak memory consumption was 250.7 MB. Max. memory is 7.1 GB. [2018-10-27 00:15:58,467 INFO L168 Benchmark]: TraceAbstraction took 231438.39 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 1.9 GB in the end (delta: 19.3 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-27 00:15:58,472 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1152.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 313.78 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -837.5 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 171.43 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6557.05 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 250.7 MB). Peak memory consumption was 250.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231438.39 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 1.9 GB in the end (delta: 19.3 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 55). Cancelled while BasicCegarLoop was constructing difference of abstraction (3771states) and FLOYD_HOARE automaton (currently 15 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (584 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 231.3s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 148.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 773 SDtfs, 6097 SDslu, 509 SDs, 0 SdLazy, 8366 SolverSat, 2651 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 57.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 596 GetRequests, 468 SyntacticMatches, 79 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 67.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3771occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9956515292175976 AbsIntWeakeningRatio, 0.10320284697508897 AbsIntAvgWeakeningVarsNumRemoved, 552.288256227758 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 52 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 808 NumberOfCodeBlocks, 808 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 803 ConstructedInterpolants, 0 QuantifiedInterpolants, 620011 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 197/500 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown