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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label15_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 02:09:49,016 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 02:09:49,019 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 02:09:49,030 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 02:09:49,031 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 02:09:49,032 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 02:09:49,033 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 02:09:49,035 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 02:09:49,037 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 02:09:49,038 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 02:09:49,039 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 02:09:49,040 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 02:09:49,041 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 02:09:49,042 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 02:09:49,043 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 02:09:49,044 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 02:09:49,045 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 02:09:49,047 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 02:09:49,049 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 02:09:49,052 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 02:09:49,053 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 02:09:49,058 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 02:09:49,060 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 02:09:49,070 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 02:09:49,097 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 02:09:49,098 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 02:09:49,098 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 02:09:49,099 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 02:09:49,099 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 02:09:49,099 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 02:09:49,100 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 02:09:49,100 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 02:09:49,100 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 02:09:49,100 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 02:09:49,100 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 02:09:49,101 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 02:09:49,101 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 02:09:49,101 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 02:09:49,103 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 02:09:49,103 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 02:09:49,103 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 02:09:49,103 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 02:09:49,103 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 02:09:49,104 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 02:09:49,105 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 02:09:49,106 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 02:09:49,106 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 02:09:49,106 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 02:09:49,106 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 02:09:49,106 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 02:09:49,107 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 02:09:49,107 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 02:09:49,107 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 02:09:49,107 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 02:09:49,107 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 02:09:49,108 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 02:09:49,108 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 02:09:49,108 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 02:09:49,108 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 02:09:49,108 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 02:09:49,184 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 02:09:49,201 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 02:09:49,206 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 02:09:49,208 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 02:09:49,208 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 02:09:49,209 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label15_true-unreach-call.c [2018-10-25 02:09:49,273 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d6206e4d1/84749cd380b4486fb0795a293446bfb6/FLAGdfbeaef06 [2018-10-25 02:09:50,176 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 02:09:50,177 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label15_true-unreach-call.c [2018-10-25 02:09:50,221 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d6206e4d1/84749cd380b4486fb0795a293446bfb6/FLAGdfbeaef06 [2018-10-25 02:09:50,245 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d6206e4d1/84749cd380b4486fb0795a293446bfb6 [2018-10-25 02:09:50,257 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 02:09:50,259 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 02:09:50,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 02:09:50,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 02:09:50,268 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 02:09:50,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:09:50" (1/1) ... [2018-10-25 02:09:50,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8de4687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:09:50, skipping insertion in model container [2018-10-25 02:09:50,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:09:50" (1/1) ... [2018-10-25 02:09:50,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 02:09:50,526 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 02:09:52,469 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:09:52,474 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 02:09:53,554 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:09:53,609 INFO L193 MainTranslator]: Completed translation [2018-10-25 02:09:53,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:09:53 WrapperNode [2018-10-25 02:09:53,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 02:09:53,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 02:09:53,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 02:09:53,611 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 02:09:53,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:09:53" (1/1) ... [2018-10-25 02:09:53,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:09:53" (1/1) ... [2018-10-25 02:09:54,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 02:09:54,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 02:09:54,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 02:09:54,340 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 02:09:54,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:09:53" (1/1) ... [2018-10-25 02:09:54,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:09:53" (1/1) ... [2018-10-25 02:09:54,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:09:53" (1/1) ... [2018-10-25 02:09:54,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:09:53" (1/1) ... [2018-10-25 02:09:54,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:09:53" (1/1) ... [2018-10-25 02:09:54,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:09:53" (1/1) ... [2018-10-25 02:09:54,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:09:53" (1/1) ... [2018-10-25 02:09:54,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 02:09:54,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 02:09:54,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 02:09:54,761 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 02:09:54,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:09:53" (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 [2018-10-25 02:09:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 02:09:54,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 02:09:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-25 02:09:54,831 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-25 02:09:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-25 02:09:54,831 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-25 02:09:54,832 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-25 02:09:54,832 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-25 02:09:54,832 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-25 02:09:54,832 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-25 02:09:54,832 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 02:09:54,832 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 02:09:54,833 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 02:09:54,833 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 02:09:54,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 02:09:54,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 02:09:54,834 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 02:09:54,834 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 02:10:12,823 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 02:10:12,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:10:12 BoogieIcfgContainer [2018-10-25 02:10:12,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 02:10:12,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 02:10:12,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 02:10:12,828 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 02:10:12,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 02:09:50" (1/3) ... [2018-10-25 02:10:12,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d98ae1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:10:12, skipping insertion in model container [2018-10-25 02:10:12,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:09:53" (2/3) ... [2018-10-25 02:10:12,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d98ae1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:10:12, skipping insertion in model container [2018-10-25 02:10:12,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:10:12" (3/3) ... [2018-10-25 02:10:12,832 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label15_true-unreach-call.c [2018-10-25 02:10:12,844 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 02:10:12,856 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 02:10:12,874 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 02:10:12,929 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 02:10:12,929 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 02:10:12,929 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 02:10:12,929 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 02:10:12,930 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 02:10:12,930 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 02:10:12,930 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 02:10:12,930 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 02:10:12,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-25 02:10:13,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-25 02:10:13,008 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:10:13,009 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] [2018-10-25 02:10:13,011 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:10:13,016 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:10:13,017 INFO L82 PathProgramCache]: Analyzing trace with hash -145550206, now seen corresponding path program 1 times [2018-10-25 02:10:13,019 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:10:13,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:10:13,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:10:13,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:10:13,075 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:10:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:10:13,580 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-25 02:10:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:10:13,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:10:13,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 02:10:13,624 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:10:13,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 02:10:13,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 02:10:13,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:10:13,664 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-10-25 02:10:42,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:10:42,533 INFO L93 Difference]: Finished difference Result 6513 states and 12383 transitions. [2018-10-25 02:10:42,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 02:10:42,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2018-10-25 02:10:42,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:10:42,601 INFO L225 Difference]: With dead ends: 6513 [2018-10-25 02:10:42,602 INFO L226 Difference]: Without dead ends: 4729 [2018-10-25 02:10:42,618 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:10:42,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4729 states. [2018-10-25 02:10:42,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4729 to 4693. [2018-10-25 02:10:42,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4693 states. [2018-10-25 02:10:42,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 7735 transitions. [2018-10-25 02:10:42,883 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 7735 transitions. Word has length 65 [2018-10-25 02:10:42,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:10:42,884 INFO L481 AbstractCegarLoop]: Abstraction has 4693 states and 7735 transitions. [2018-10-25 02:10:42,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 02:10:42,884 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 7735 transitions. [2018-10-25 02:10:42,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-25 02:10:42,902 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:10:42,902 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:10:42,903 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:10:42,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:10:42,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1956104820, now seen corresponding path program 1 times [2018-10-25 02:10:42,903 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:10:42,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:10:42,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:10:42,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:10:42,907 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:10:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:10:43,231 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:10:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:10:43,353 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:10:43,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:10:43,353 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:10:43,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:10:43,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:10:43,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:10:43,356 INFO L87 Difference]: Start difference. First operand 4693 states and 7735 transitions. Second operand 6 states. [2018-10-25 02:11:14,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:11:14,958 INFO L93 Difference]: Finished difference Result 17898 states and 30195 transitions. [2018-10-25 02:11:14,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 02:11:14,959 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-10-25 02:11:14,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:11:15,020 INFO L225 Difference]: With dead ends: 17898 [2018-10-25 02:11:15,020 INFO L226 Difference]: Without dead ends: 13211 [2018-10-25 02:11:15,038 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 [2018-10-25 02:11:15,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13211 states. [2018-10-25 02:11:15,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13211 to 13139. [2018-10-25 02:11:15,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13139 states. [2018-10-25 02:11:15,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13139 states to 13139 states and 19385 transitions. [2018-10-25 02:11:15,408 INFO L78 Accepts]: Start accepts. Automaton has 13139 states and 19385 transitions. Word has length 137 [2018-10-25 02:11:15,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:11:15,409 INFO L481 AbstractCegarLoop]: Abstraction has 13139 states and 19385 transitions. [2018-10-25 02:11:15,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:11:15,409 INFO L276 IsEmpty]: Start isEmpty. Operand 13139 states and 19385 transitions. [2018-10-25 02:11:15,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-25 02:11:15,415 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:11:15,415 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:11:15,415 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:11:15,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:11:15,416 INFO L82 PathProgramCache]: Analyzing trace with hash -749519922, now seen corresponding path program 1 times [2018-10-25 02:11:15,416 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:11:15,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:11:15,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:11:15,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:11:15,418 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:11:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:11:15,930 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:11:15,931 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:11:15,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:11:15,931 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:11:15,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:11:15,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:11:15,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:11:15,933 INFO L87 Difference]: Start difference. First operand 13139 states and 19385 transitions. Second operand 6 states. [2018-10-25 02:11:40,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:11:40,404 INFO L93 Difference]: Finished difference Result 39941 states and 60339 transitions. [2018-10-25 02:11:40,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-25 02:11:40,405 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2018-10-25 02:11:40,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:11:40,489 INFO L225 Difference]: With dead ends: 39941 [2018-10-25 02:11:40,489 INFO L226 Difference]: Without dead ends: 26808 [2018-10-25 02:11:40,529 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-25 02:11:40,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26808 states. [2018-10-25 02:11:41,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26808 to 26569. [2018-10-25 02:11:41,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26569 states. [2018-10-25 02:11:41,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26569 states to 26569 states and 38730 transitions. [2018-10-25 02:11:41,158 INFO L78 Accepts]: Start accepts. Automaton has 26569 states and 38730 transitions. Word has length 147 [2018-10-25 02:11:41,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:11:41,159 INFO L481 AbstractCegarLoop]: Abstraction has 26569 states and 38730 transitions. [2018-10-25 02:11:41,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:11:41,159 INFO L276 IsEmpty]: Start isEmpty. Operand 26569 states and 38730 transitions. [2018-10-25 02:11:41,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-25 02:11:41,165 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:11:41,165 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:11:41,165 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:11:41,166 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:11:41,166 INFO L82 PathProgramCache]: Analyzing trace with hash -177824352, now seen corresponding path program 1 times [2018-10-25 02:11:41,166 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:11:41,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:11:41,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:11:41,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:11:41,167 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:11:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:11:41,452 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:11:41,784 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:11:41,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:11:41,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:11:41,785 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:11:41,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:11:41,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:11:41,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:11:41,786 INFO L87 Difference]: Start difference. First operand 26569 states and 38730 transitions. Second operand 6 states. [2018-10-25 02:12:04,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:12:04,584 INFO L93 Difference]: Finished difference Result 70609 states and 106917 transitions. [2018-10-25 02:12:04,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 02:12:04,594 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 180 [2018-10-25 02:12:04,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:12:04,723 INFO L225 Difference]: With dead ends: 70609 [2018-10-25 02:12:04,724 INFO L226 Difference]: Without dead ends: 44046 [2018-10-25 02:12:04,783 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 02:12:04,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44046 states. [2018-10-25 02:12:05,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44046 to 43890. [2018-10-25 02:12:05,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43890 states. [2018-10-25 02:12:05,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43890 states to 43890 states and 61188 transitions. [2018-10-25 02:12:05,607 INFO L78 Accepts]: Start accepts. Automaton has 43890 states and 61188 transitions. Word has length 180 [2018-10-25 02:12:05,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:12:05,608 INFO L481 AbstractCegarLoop]: Abstraction has 43890 states and 61188 transitions. [2018-10-25 02:12:05,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:12:05,608 INFO L276 IsEmpty]: Start isEmpty. Operand 43890 states and 61188 transitions. [2018-10-25 02:12:05,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-25 02:12:05,620 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:12:05,620 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:12:05,620 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:12:05,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:12:05,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1490211056, now seen corresponding path program 1 times [2018-10-25 02:12:05,621 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:12:05,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:12:05,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:12:05,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:12:05,625 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:12:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:12:05,904 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:12:06,032 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 174 proven. 134 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-10-25 02:12:06,032 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:12:06,033 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:12:06,034 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 291 with the following transitions: [2018-10-25 02:12:06,036 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5594], [5602], [5610], [5618], [5626], [5634], [5642], [5646], [5648], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5749], [5750], [5754], [5758], [5762], [5766], [5769], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-25 02:12:06,095 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:12:06,095 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:12:06,568 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 02:12:06,570 INFO L272 AbstractInterpreter]: Visited 85 different actions 85 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-25 02:12:06,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:12:06,620 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 02:12:07,392 INFO L232 lantSequenceWeakener]: Weakened 276 states. On average, predicates are now at 75.71% of their original sizes. [2018-10-25 02:12:07,392 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 02:12:07,652 INFO L413 sIntCurrentIteration]: We have 289 unified AI predicates [2018-10-25 02:12:07,652 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 02:12:07,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 02:12:07,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-25 02:12:07,654 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:12:07,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:12:07,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:12:07,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:12:07,655 INFO L87 Difference]: Start difference. First operand 43890 states and 61188 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown