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_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 02:12:36,355 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 02:12:36,357 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 02:12:36,370 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 02:12:36,370 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 02:12:36,371 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 02:12:36,373 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 02:12:36,374 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 02:12:36,376 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 02:12:36,377 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 02:12:36,378 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 02:12:36,378 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 02:12:36,379 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 02:12:36,380 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 02:12:36,381 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 02:12:36,382 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 02:12:36,383 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 02:12:36,385 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 02:12:36,387 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 02:12:36,389 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 02:12:36,390 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 02:12:36,394 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 02:12:36,396 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 02:12:36,411 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 02:12:36,440 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 02:12:36,440 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 02:12:36,441 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 02:12:36,441 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 02:12:36,442 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 02:12:36,442 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 02:12:36,442 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 02:12:36,442 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 02:12:36,442 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 02:12:36,443 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 02:12:36,444 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 02:12:36,444 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 02:12:36,444 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 02:12:36,444 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 02:12:36,445 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 02:12:36,445 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 02:12:36,445 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 02:12:36,445 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 02:12:36,446 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 02:12:36,447 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 02:12:36,447 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 02:12:36,447 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 02:12:36,447 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 02:12:36,448 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 02:12:36,448 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 02:12:36,448 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 02:12:36,448 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 02:12:36,449 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 02:12:36,449 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 02:12:36,449 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 02:12:36,449 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 02:12:36,449 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 02:12:36,450 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 02:12:36,450 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 02:12:36,451 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 02:12:36,451 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 02:12:36,511 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 02:12:36,529 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 02:12:36,534 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 02:12:36,536 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 02:12:36,536 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 02:12:36,538 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label24_true-unreach-call.c [2018-10-25 02:12:36,608 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c53051ea4/ec1d19b5b02f4c6ab9e10b8731ab9fd7/FLAGd320d9d3b [2018-10-25 02:12:37,512 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 02:12:37,514 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label24_true-unreach-call.c [2018-10-25 02:12:37,569 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c53051ea4/ec1d19b5b02f4c6ab9e10b8731ab9fd7/FLAGd320d9d3b [2018-10-25 02:12:37,588 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c53051ea4/ec1d19b5b02f4c6ab9e10b8731ab9fd7 [2018-10-25 02:12:37,603 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 02:12:37,605 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 02:12:37,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 02:12:37,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 02:12:37,612 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 02:12:37,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:12:37" (1/1) ... [2018-10-25 02:12:37,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e1803bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:12:37, skipping insertion in model container [2018-10-25 02:12:37,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:12:37" (1/1) ... [2018-10-25 02:12:37,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 02:12:37,901 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 02:12:39,878 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:12:39,883 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 02:12:41,037 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:12:41,099 INFO L193 MainTranslator]: Completed translation [2018-10-25 02:12:41,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:12:41 WrapperNode [2018-10-25 02:12:41,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 02:12:41,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 02:12:41,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 02:12:41,103 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 02:12:41,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:12:41" (1/1) ... [2018-10-25 02:12:41,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:12:41" (1/1) ... [2018-10-25 02:12:41,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 02:12:41,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 02:12:41,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 02:12:41,918 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 02:12:41,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:12:41" (1/1) ... [2018-10-25 02:12:41,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:12:41" (1/1) ... [2018-10-25 02:12:42,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:12:41" (1/1) ... [2018-10-25 02:12:42,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:12:41" (1/1) ... [2018-10-25 02:12:42,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:12:41" (1/1) ... [2018-10-25 02:12:42,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:12:41" (1/1) ... [2018-10-25 02:12:42,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:12:41" (1/1) ... [2018-10-25 02:12:42,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 02:12:42,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 02:12:42,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 02:12:42,591 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 02:12:42,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:12:41" (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 02:12:42,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 02:12:42,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 02:12:42,662 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-25 02:12:42,662 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-25 02:12:42,662 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-25 02:12:42,663 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-25 02:12:42,663 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-25 02:12:42,663 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-25 02:12:42,663 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-25 02:12:42,664 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-25 02:12:42,664 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 02:12:42,664 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 02:12:42,664 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 02:12:42,665 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 02:12:42,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 02:12:42,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 02:12:42,666 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 02:12:42,666 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 02:13:01,069 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 02:13:01,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:13:01 BoogieIcfgContainer [2018-10-25 02:13:01,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 02:13:01,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 02:13:01,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 02:13:01,080 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 02:13:01,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 02:12:37" (1/3) ... [2018-10-25 02:13:01,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e77acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:13:01, skipping insertion in model container [2018-10-25 02:13:01,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:12:41" (2/3) ... [2018-10-25 02:13:01,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e77acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:13:01, skipping insertion in model container [2018-10-25 02:13:01,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:13:01" (3/3) ... [2018-10-25 02:13:01,088 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label24_true-unreach-call.c [2018-10-25 02:13:01,096 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 02:13:01,106 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 02:13:01,124 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 02:13:01,181 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 02:13:01,181 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 02:13:01,181 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 02:13:01,182 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 02:13:01,182 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 02:13:01,182 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 02:13:01,182 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 02:13:01,182 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 02:13:01,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-25 02:13:01,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-25 02:13:01,254 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:13:01,255 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] [2018-10-25 02:13:01,258 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:13:01,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:13:01,265 INFO L82 PathProgramCache]: Analyzing trace with hash -667594212, now seen corresponding path program 1 times [2018-10-25 02:13:01,268 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:13:01,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:13:01,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:13:01,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:13:01,322 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:13:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:13:01,782 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:13:01,947 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 02:13:01,949 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:13:01,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 02:13:01,953 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:13:01,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:13:01,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:13:01,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:13:01,988 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-25 02:13:19,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:13:19,576 INFO L93 Difference]: Finished difference Result 5049 states and 9513 transitions. [2018-10-25 02:13:19,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:13:19,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2018-10-25 02:13:19,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:13:19,644 INFO L225 Difference]: With dead ends: 5049 [2018-10-25 02:13:19,645 INFO L226 Difference]: Without dead ends: 3269 [2018-10-25 02:13:19,663 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:13:19,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2018-10-25 02:13:19,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 3218. [2018-10-25 02:13:19,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3218 states. [2018-10-25 02:13:19,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 5997 transitions. [2018-10-25 02:13:19,882 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 5997 transitions. Word has length 52 [2018-10-25 02:13:19,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:13:19,883 INFO L481 AbstractCegarLoop]: Abstraction has 3218 states and 5997 transitions. [2018-10-25 02:13:19,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:13:19,883 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 5997 transitions. [2018-10-25 02:13:19,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-25 02:13:19,891 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:13:19,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:13:19,891 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:13:19,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:13:19,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1067454159, now seen corresponding path program 1 times [2018-10-25 02:13:19,892 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:13:19,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:13:19,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:13:19,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:13:19,895 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:13:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:13:20,296 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:13:20,703 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:13:20,703 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:13:20,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:13:20,703 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:13:20,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:13:20,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:13:20,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:13:20,707 INFO L87 Difference]: Start difference. First operand 3218 states and 5997 transitions. Second operand 6 states. [2018-10-25 02:13:47,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:13:47,460 INFO L93 Difference]: Finished difference Result 12137 states and 23144 transitions. [2018-10-25 02:13:47,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 02:13:47,461 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-10-25 02:13:47,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:13:47,509 INFO L225 Difference]: With dead ends: 12137 [2018-10-25 02:13:47,509 INFO L226 Difference]: Without dead ends: 8925 [2018-10-25 02:13:47,524 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 02:13:47,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8925 states. [2018-10-25 02:13:47,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8925 to 8862. [2018-10-25 02:13:47,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8862 states. [2018-10-25 02:13:47,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8862 states to 8862 states and 14404 transitions. [2018-10-25 02:13:47,752 INFO L78 Accepts]: Start accepts. Automaton has 8862 states and 14404 transitions. Word has length 124 [2018-10-25 02:13:47,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:13:47,753 INFO L481 AbstractCegarLoop]: Abstraction has 8862 states and 14404 transitions. [2018-10-25 02:13:47,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:13:47,753 INFO L276 IsEmpty]: Start isEmpty. Operand 8862 states and 14404 transitions. [2018-10-25 02:13:47,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-25 02:13:47,758 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:13:47,758 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:13:47,758 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:13:47,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:13:47,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1956611073, now seen corresponding path program 1 times [2018-10-25 02:13:47,759 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:13:47,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:13:47,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:13:47,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:13:47,761 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:13:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:13:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:13:48,080 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:13:48,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 02:13:48,081 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:13:48,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 02:13:48,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 02:13:48,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 02:13:48,083 INFO L87 Difference]: Start difference. First operand 8862 states and 14404 transitions. Second operand 5 states. [2018-10-25 02:14:25,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:14:25,752 INFO L93 Difference]: Finished difference Result 32229 states and 52865 transitions. [2018-10-25 02:14:25,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 02:14:25,753 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2018-10-25 02:14:25,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:14:25,854 INFO L225 Difference]: With dead ends: 32229 [2018-10-25 02:14:25,854 INFO L226 Difference]: Without dead ends: 23373 [2018-10-25 02:14:25,892 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 02:14:25,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23373 states. [2018-10-25 02:14:26,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23373 to 23191. [2018-10-25 02:14:26,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23191 states. [2018-10-25 02:14:26,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23191 states to 23191 states and 32181 transitions. [2018-10-25 02:14:26,443 INFO L78 Accepts]: Start accepts. Automaton has 23191 states and 32181 transitions. Word has length 126 [2018-10-25 02:14:26,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:14:26,443 INFO L481 AbstractCegarLoop]: Abstraction has 23191 states and 32181 transitions. [2018-10-25 02:14:26,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 02:14:26,443 INFO L276 IsEmpty]: Start isEmpty. Operand 23191 states and 32181 transitions. [2018-10-25 02:14:26,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-25 02:14:26,453 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:14:26,453 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:14:26,454 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:14:26,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:14:26,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1540904621, now seen corresponding path program 1 times [2018-10-25 02:14:26,454 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:14:26,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:14:26,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:14:26,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:14:26,456 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:14:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:14:26,822 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:14:26,823 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:14:26,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 02:14:26,823 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:14:26,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 02:14:26,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 02:14:26,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 02:14:26,826 INFO L87 Difference]: Start difference. First operand 23191 states and 32181 transitions. Second operand 5 states. [2018-10-25 02:14:52,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:14:52,545 INFO L93 Difference]: Finished difference Result 70920 states and 102553 transitions. [2018-10-25 02:14:52,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 02:14:52,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2018-10-25 02:14:52,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:14:52,716 INFO L225 Difference]: With dead ends: 70920 [2018-10-25 02:14:52,716 INFO L226 Difference]: Without dead ends: 47735 [2018-10-25 02:14:52,788 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 02:14:52,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47735 states. [2018-10-25 02:14:53,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47735 to 46960. [2018-10-25 02:14:53,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46960 states. [2018-10-25 02:14:53,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46960 states to 46960 states and 61431 transitions. [2018-10-25 02:14:53,804 INFO L78 Accepts]: Start accepts. Automaton has 46960 states and 61431 transitions. Word has length 157 [2018-10-25 02:14:53,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:14:53,805 INFO L481 AbstractCegarLoop]: Abstraction has 46960 states and 61431 transitions. [2018-10-25 02:14:53,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 02:14:53,805 INFO L276 IsEmpty]: Start isEmpty. Operand 46960 states and 61431 transitions. [2018-10-25 02:14:53,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-25 02:14:53,816 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:14:53,817 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:14:53,817 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:14:53,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:14:53,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1193629279, now seen corresponding path program 1 times [2018-10-25 02:14:53,818 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:14:53,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:14:53,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:14:53,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:14:53,820 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:14:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:14:54,104 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:14:54,463 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 90 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 02:14:54,464 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:14:54,464 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:14:54,465 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 206 with the following transitions: [2018-10-25 02:14:54,468 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], [5542], [5544], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5734], [5739], [5741], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5769], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-25 02:14:54,530 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:14:54,530 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:14:54,993 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 02:14:54,996 INFO L272 AbstractInterpreter]: Visited 84 different actions 84 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-25 02:14:55,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:14:55,037 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 02:14:55,549 INFO L232 lantSequenceWeakener]: Weakened 194 states. On average, predicates are now at 75.69% of their original sizes. [2018-10-25 02:14:55,550 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 02:14:55,801 INFO L413 sIntCurrentIteration]: We have 204 unified AI predicates [2018-10-25 02:14:55,802 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 02:14:55,803 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 02:14:55,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-25 02:14:55,803 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:14:55,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:14:55,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:14:55,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:14:55,805 INFO L87 Difference]: Start difference. First operand 46960 states and 61431 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown