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/Problem10_label25_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 20:58:32,955 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 20:58:32,957 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 20:58:32,971 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 20:58:32,971 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 20:58:32,972 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 20:58:32,974 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 20:58:32,977 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 20:58:32,979 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 20:58:32,980 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 20:58:32,987 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 20:58:32,987 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 20:58:32,988 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 20:58:32,989 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 20:58:32,990 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 20:58:32,992 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 20:58:32,993 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 20:58:32,995 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 20:58:33,002 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 20:58:33,005 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 20:58:33,006 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 20:58:33,008 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 20:58:33,012 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 20:58:33,020 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 20:58:33,020 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 20:58:33,021 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 20:58:33,021 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 20:58:33,022 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 [2018-10-24 20:58:33,042 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 20:58:33,042 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 20:58:33,043 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 20:58:33,043 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 20:58:33,044 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 20:58:33,044 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 20:58:33,044 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 20:58:33,044 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 20:58:33,044 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 20:58:33,045 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 20:58:33,045 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 20:58:33,045 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 20:58:33,046 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 20:58:33,046 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 20:58:33,046 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 20:58:33,046 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 20:58:33,047 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 20:58:33,049 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 20:58:33,050 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 20:58:33,050 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 20:58:33,050 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 20:58:33,050 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 20:58:33,050 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 20:58:33,054 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 20:58:33,054 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 20:58:33,054 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 20:58:33,055 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 20:58:33,055 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 20:58:33,055 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 20:58:33,055 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 20:58:33,055 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 20:58:33,056 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 20:58:33,056 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 20:58:33,056 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 20:58:33,103 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 20:58:33,117 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 20:58:33,121 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 20:58:33,122 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 20:58:33,123 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 20:58:33,124 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label25_true-unreach-call.c [2018-10-24 20:58:33,198 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4eef19e87/4680df0dab864a8d9d8a358331c41247/FLAGcfddc1796 [2018-10-24 20:58:33,842 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 20:58:33,843 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label25_true-unreach-call.c [2018-10-24 20:58:33,856 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4eef19e87/4680df0dab864a8d9d8a358331c41247/FLAGcfddc1796 [2018-10-24 20:58:33,874 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4eef19e87/4680df0dab864a8d9d8a358331c41247 [2018-10-24 20:58:33,887 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 20:58:33,889 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 20:58:33,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 20:58:33,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 20:58:33,895 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 20:58:33,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 08:58:33" (1/1) ... [2018-10-24 20:58:33,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1652d08d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:58:33, skipping insertion in model container [2018-10-24 20:58:33,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 08:58:33" (1/1) ... [2018-10-24 20:58:33,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 20:58:33,998 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 20:58:34,426 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 20:58:34,438 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 20:58:34,582 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 20:58:34,601 INFO L193 MainTranslator]: Completed translation [2018-10-24 20:58:34,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:58:34 WrapperNode [2018-10-24 20:58:34,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 20:58:34,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 20:58:34,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 20:58:34,603 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 20:58:34,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:58:34" (1/1) ... [2018-10-24 20:58:34,640 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:58:34" (1/1) ... [2018-10-24 20:58:34,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 20:58:34,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 20:58:34,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 20:58:34,806 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 20:58:34,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:58:34" (1/1) ... [2018-10-24 20:58:34,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:58:34" (1/1) ... [2018-10-24 20:58:34,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:58:34" (1/1) ... [2018-10-24 20:58:34,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:58:34" (1/1) ... [2018-10-24 20:58:34,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:58:34" (1/1) ... [2018-10-24 20:58:34,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:58:34" (1/1) ... [2018-10-24 20:58:34,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:58:34" (1/1) ... [2018-10-24 20:58:34,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 20:58:34,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 20:58:34,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 20:58:34,905 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 20:58:34,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:58:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 20:58:34,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 20:58:34,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 20:58:34,963 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 20:58:34,963 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 20:58:34,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 20:58:34,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 20:58:34,964 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 20:58:34,964 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 20:58:38,080 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 20:58:38,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 08:58:38 BoogieIcfgContainer [2018-10-24 20:58:38,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 20:58:38,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 20:58:38,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 20:58:38,086 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 20:58:38,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 08:58:33" (1/3) ... [2018-10-24 20:58:38,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d097219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 08:58:38, skipping insertion in model container [2018-10-24 20:58:38,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:58:34" (2/3) ... [2018-10-24 20:58:38,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d097219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 08:58:38, skipping insertion in model container [2018-10-24 20:58:38,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 08:58:38" (3/3) ... [2018-10-24 20:58:38,091 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label25_true-unreach-call.c [2018-10-24 20:58:38,100 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 20:58:38,108 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 20:58:38,123 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 20:58:38,161 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 20:58:38,162 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 20:58:38,162 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 20:58:38,162 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 20:58:38,162 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 20:58:38,163 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 20:58:38,163 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 20:58:38,163 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 20:58:38,201 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 20:58:38,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-24 20:58:38,213 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 20:58:38,214 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 20:58:38,216 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 20:58:38,222 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:58:38,222 INFO L82 PathProgramCache]: Analyzing trace with hash 382760497, now seen corresponding path program 1 times [2018-10-24 20:58:38,224 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 20:58:38,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:58:38,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 20:58:38,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:58:38,270 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 20:58:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 20:58:38,764 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 20:58:38,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 20:58:38,888 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 20:58:38,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 20:58:38,889 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 20:58:38,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 20:58:38,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 20:58:38,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 20:58:38,919 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-24 20:58:40,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 20:58:40,721 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-24 20:58:40,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 20:58:40,724 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2018-10-24 20:58:40,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 20:58:40,742 INFO L225 Difference]: With dead ends: 574 [2018-10-24 20:58:40,743 INFO L226 Difference]: Without dead ends: 356 [2018-10-24 20:58:40,751 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 [2018-10-24 20:58:40,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-24 20:58:40,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-24 20:58:40,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-24 20:58:40,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 592 transitions. [2018-10-24 20:58:40,825 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 592 transitions. Word has length 71 [2018-10-24 20:58:40,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 20:58:40,826 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 592 transitions. [2018-10-24 20:58:40,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 20:58:40,826 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 592 transitions. [2018-10-24 20:58:40,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-24 20:58:40,836 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 20:58:40,836 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 20:58:40,837 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 20:58:40,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:58:40,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1446129720, now seen corresponding path program 1 times [2018-10-24 20:58:40,837 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 20:58:40,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:58:40,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 20:58:40,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:58:40,839 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 20:58:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 20:58:41,142 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 20:58:41,143 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 20:58:41,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 20:58:41,143 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 20:58:41,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 20:58:41,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 20:58:41,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 20:58:41,146 INFO L87 Difference]: Start difference. First operand 356 states and 592 transitions. Second operand 6 states. [2018-10-24 20:58:43,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 20:58:43,419 INFO L93 Difference]: Finished difference Result 1002 states and 1689 transitions. [2018-10-24 20:58:43,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 20:58:43,422 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2018-10-24 20:58:43,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 20:58:43,428 INFO L225 Difference]: With dead ends: 1002 [2018-10-24 20:58:43,428 INFO L226 Difference]: Without dead ends: 652 [2018-10-24 20:58:43,434 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 20:58:43,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2018-10-24 20:58:43,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 640. [2018-10-24 20:58:43,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2018-10-24 20:58:43,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 960 transitions. [2018-10-24 20:58:43,483 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 960 transitions. Word has length 141 [2018-10-24 20:58:43,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 20:58:43,484 INFO L481 AbstractCegarLoop]: Abstraction has 640 states and 960 transitions. [2018-10-24 20:58:43,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 20:58:43,484 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 960 transitions. [2018-10-24 20:58:43,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-24 20:58:43,488 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 20:58:43,489 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 20:58:43,489 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 20:58:43,489 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:58:43,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1467562684, now seen corresponding path program 1 times [2018-10-24 20:58:43,490 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 20:58:43,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:58:43,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 20:58:43,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:58:43,491 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 20:58:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 20:58:43,721 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 20:58:43,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 20:58:43,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 20:58:43,722 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 20:58:43,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 20:58:43,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 20:58:43,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 20:58:43,723 INFO L87 Difference]: Start difference. First operand 640 states and 960 transitions. Second operand 4 states. [2018-10-24 20:58:47,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 20:58:47,033 INFO L93 Difference]: Finished difference Result 2128 states and 3336 transitions. [2018-10-24 20:58:47,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 20:58:47,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2018-10-24 20:58:47,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 20:58:47,046 INFO L225 Difference]: With dead ends: 2128 [2018-10-24 20:58:47,047 INFO L226 Difference]: Without dead ends: 904 [2018-10-24 20:58:47,058 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 20:58:47,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2018-10-24 20:58:47,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 904. [2018-10-24 20:58:47,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2018-10-24 20:58:47,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1277 transitions. [2018-10-24 20:58:47,095 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1277 transitions. Word has length 151 [2018-10-24 20:58:47,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 20:58:47,095 INFO L481 AbstractCegarLoop]: Abstraction has 904 states and 1277 transitions. [2018-10-24 20:58:47,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 20:58:47,096 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1277 transitions. [2018-10-24 20:58:47,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-24 20:58:47,101 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 20:58:47,101 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 20:58:47,101 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 20:58:47,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:58:47,102 INFO L82 PathProgramCache]: Analyzing trace with hash -774507349, now seen corresponding path program 1 times [2018-10-24 20:58:47,102 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 20:58:47,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:58:47,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 20:58:47,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:58:47,105 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 20:58:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 20:58:47,548 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 20:58:47,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 20:58:47,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 20:58:47,548 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 20:58:47,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 20:58:47,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 20:58:47,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 20:58:47,550 INFO L87 Difference]: Start difference. First operand 904 states and 1277 transitions. Second operand 6 states. [2018-10-24 20:58:48,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 20:58:48,956 INFO L93 Difference]: Finished difference Result 2127 states and 3078 transitions. [2018-10-24 20:58:48,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 20:58:48,957 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 194 [2018-10-24 20:58:48,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 20:58:48,967 INFO L225 Difference]: With dead ends: 2127 [2018-10-24 20:58:48,967 INFO L226 Difference]: Without dead ends: 1229 [2018-10-24 20:58:48,972 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 [2018-10-24 20:58:48,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2018-10-24 20:58:49,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1208. [2018-10-24 20:58:49,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1208 states. [2018-10-24 20:58:49,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1646 transitions. [2018-10-24 20:58:49,013 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1646 transitions. Word has length 194 [2018-10-24 20:58:49,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 20:58:49,013 INFO L481 AbstractCegarLoop]: Abstraction has 1208 states and 1646 transitions. [2018-10-24 20:58:49,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 20:58:49,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1646 transitions. [2018-10-24 20:58:49,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-24 20:58:49,020 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 20:58:49,021 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 20:58:49,021 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 20:58:49,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:58:49,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1703489504, now seen corresponding path program 1 times [2018-10-24 20:58:49,021 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 20:58:49,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:58:49,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 20:58:49,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:58:49,023 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 20:58:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 20:58:49,333 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 128 proven. 78 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 20:58:49,334 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 20:58:49,334 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 20:58:49,335 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 243 with the following transitions: [2018-10-24 20:58:49,337 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [469], [471], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [546], [547], [551], [555], [559], [563], [566], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 20:58:49,404 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 20:58:49,405 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 20:58:52,160 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 20:58:52,161 INFO L272 AbstractInterpreter]: Visited 93 different actions 93 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 20:58:52,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:58:52,194 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 20:58:55,971 INFO L232 lantSequenceWeakener]: Weakened 221 states. On average, predicates are now at 74.05% of their original sizes. [2018-10-24 20:58:55,971 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 20:59:01,232 INFO L413 sIntCurrentIteration]: We have 241 unified AI predicates [2018-10-24 20:59:01,232 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 20:59:01,233 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 20:59:01,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2018-10-24 20:59:01,233 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 20:59:01,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 20:59:01,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 20:59:01,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-24 20:59:01,235 INFO L87 Difference]: Start difference. First operand 1208 states and 1646 transitions. Second operand 10 states. [2018-10-24 20:59:14,041 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 20:59:50,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 20:59:50,869 INFO L93 Difference]: Finished difference Result 2559 states and 3488 transitions. [2018-10-24 20:59:50,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 20:59:50,870 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 242 [2018-10-24 20:59:50,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 20:59:50,878 INFO L225 Difference]: With dead ends: 2559 [2018-10-24 20:59:50,878 INFO L226 Difference]: Without dead ends: 1357 [2018-10-24 20:59:50,884 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 245 GetRequests, 204 SyntacticMatches, 29 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-10-24 20:59:50,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2018-10-24 20:59:50,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1352. [2018-10-24 20:59:50,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2018-10-24 20:59:50,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1796 transitions. [2018-10-24 20:59:50,957 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1796 transitions. Word has length 242 [2018-10-24 20:59:50,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 20:59:50,957 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 1796 transitions. [2018-10-24 20:59:50,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 20:59:50,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1796 transitions. [2018-10-24 20:59:50,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-10-24 20:59:50,966 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 20:59:50,967 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 20:59:50,967 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 20:59:50,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:59:50,968 INFO L82 PathProgramCache]: Analyzing trace with hash -677086258, now seen corresponding path program 1 times [2018-10-24 20:59:50,968 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 20:59:50,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:59:50,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 20:59:50,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:59:50,970 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 20:59:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 20:59:51,452 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-24 20:59:51,651 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 20:59:52,419 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 266 proven. 82 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-24 20:59:52,419 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 20:59:52,420 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 20:59:52,420 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 314 with the following transitions: [2018-10-24 20:59:52,420 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [469], [471], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [546], [547], [551], [555], [559], [563], [566], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 20:59:52,426 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 20:59:52,426 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 20:59:53,640 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:00:06,206 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:00:06,206 INFO L272 AbstractInterpreter]: Visited 97 different actions 552 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:00:06,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:00:06,216 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:00:08,912 INFO L232 lantSequenceWeakener]: Weakened 97 states. On average, predicates are now at 75.87% of their original sizes. [2018-10-24 21:00:08,912 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:00:15,045 INFO L413 sIntCurrentIteration]: We have 312 unified AI predicates [2018-10-24 21:00:15,046 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:00:15,046 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:00:15,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [14] total 32 [2018-10-24 21:00:15,047 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:00:15,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-24 21:00:15,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-24 21:00:15,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-10-24 21:00:15,048 INFO L87 Difference]: Start difference. First operand 1352 states and 1796 transitions. Second operand 20 states. Received shutdown request... [2018-10-24 21:02:20,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 21:02:20,204 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:02:20,208 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:02:20,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:02:20 BoogieIcfgContainer [2018-10-24 21:02:20,209 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:02:20,210 INFO L168 Benchmark]: Toolchain (without parser) took 226321.99 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 478.6 MB. Max. memory is 7.1 GB. [2018-10-24 21:02:20,211 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:02:20,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 712.34 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:02:20,212 INFO L168 Benchmark]: Boogie Procedure Inliner took 202.08 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 714.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -807.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:02:20,213 INFO L168 Benchmark]: Boogie Preprocessor took 98.72 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:02:20,214 INFO L168 Benchmark]: RCFGBuilder took 3177.24 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: 105.5 MB). Peak memory consumption was 105.5 MB. Max. memory is 7.1 GB. [2018-10-24 21:02:20,215 INFO L168 Benchmark]: TraceAbstraction took 222126.21 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 434.6 MB. Max. memory is 7.1 GB. [2018-10-24 21:02:20,221 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 712.34 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 202.08 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 714.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -807.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.72 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3177.24 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: 105.5 MB). Peak memory consumption was 105.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222126.21 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 434.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 196). Cancelled while BasicCegarLoop was constructing difference of abstraction (1352states) and FLOYD_HOARE automaton (currently 23 states, 20 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 27 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 222.0s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 183.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 570 SDtfs, 3677 SDslu, 490 SDs, 0 SdLazy, 4637 SolverSat, 931 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 97.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 595 GetRequests, 507 SyntacticMatches, 33 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 14.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1352occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 16.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9955807584453705 AbsIntWeakeningRatio, 0.10488245931283906 AbsIntAvgWeakeningVarsNumRemoved, 456.8155515370705 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 38 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1112 NumberOfCodeBlocks, 1112 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1106 ConstructedInterpolants, 0 QuantifiedInterpolants, 1448293 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 660/820 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown