java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label36_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:19:15,357 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:19:15,360 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:19:15,380 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:19:15,380 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:19:15,381 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:19:15,383 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:19:15,385 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:19:15,388 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:19:15,389 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:19:15,391 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:19:15,391 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:19:15,392 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:19:15,393 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:19:15,400 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:19:15,401 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:19:15,402 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:19:15,408 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:19:15,411 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:19:15,412 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:19:15,413 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:19:15,414 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:19:15,417 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:19:15,417 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:19:15,417 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:19:15,418 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:19:15,419 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:19:15,419 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:19:15,420 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:19:15,421 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:19:15,421 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:19:15,422 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:19:15,422 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:19:15,422 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:19:15,423 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:19:15,424 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:19:15,424 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 14:19:15,443 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:19:15,444 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:19:15,444 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:19:15,445 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:19:15,445 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:19:15,445 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:19:15,445 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:19:15,446 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:19:15,446 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:19:15,446 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:19:15,446 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:19:15,446 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:19:15,447 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:19:15,447 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:19:15,447 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:19:15,448 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:19:15,448 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:19:15,448 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:19:15,448 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:19:15,448 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:19:15,449 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:19:15,449 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:19:15,449 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:19:15,449 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:19:15,449 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:19:15,450 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:19:15,450 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:19:15,450 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:19:15,450 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:19:15,450 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:19:15,451 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:19:15,451 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:19:15,451 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:19:15,451 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:19:15,501 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:19:15,515 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:19:15,520 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:19:15,522 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:19:15,522 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:19:15,523 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label36_true-unreach-call.c [2018-11-07 14:19:15,589 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed3f32356/113855f8fa454fa8ac6cbaa996f5faf0/FLAG0c5555d74 [2018-11-07 14:19:16,196 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:19:16,197 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label36_true-unreach-call.c [2018-11-07 14:19:16,213 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed3f32356/113855f8fa454fa8ac6cbaa996f5faf0/FLAG0c5555d74 [2018-11-07 14:19:16,231 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed3f32356/113855f8fa454fa8ac6cbaa996f5faf0 [2018-11-07 14:19:16,248 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:19:16,250 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:19:16,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:19:16,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:19:16,256 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:19:16,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:19:16" (1/1) ... [2018-11-07 14:19:16,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f80c201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:16, skipping insertion in model container [2018-11-07 14:19:16,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:19:16" (1/1) ... [2018-11-07 14:19:16,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:19:16,344 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:19:16,822 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:19:16,829 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:19:17,005 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:19:17,037 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:19:17,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:17 WrapperNode [2018-11-07 14:19:17,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:19:17,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:19:17,040 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:19:17,040 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:19:17,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:17" (1/1) ... [2018-11-07 14:19:17,199 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:17" (1/1) ... [2018-11-07 14:19:17,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:19:17,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:19:17,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:19:17,215 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:19:17,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:17" (1/1) ... [2018-11-07 14:19:17,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:17" (1/1) ... [2018-11-07 14:19:17,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:17" (1/1) ... [2018-11-07 14:19:17,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:17" (1/1) ... [2018-11-07 14:19:17,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:17" (1/1) ... [2018-11-07 14:19:17,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:17" (1/1) ... [2018-11-07 14:19:17,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:17" (1/1) ... [2018-11-07 14:19:17,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:19:17,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:19:17,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:19:17,337 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:19:17,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 14:19:17,413 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:19:17,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:19:17,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:19:17,413 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:19:17,414 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:19:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:19:17,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:19:17,415 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:19:17,415 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:19:20,529 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:19:20,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:19:20 BoogieIcfgContainer [2018-11-07 14:19:20,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:19:20,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:19:20,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:19:20,536 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:19:20,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:19:16" (1/3) ... [2018-11-07 14:19:20,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b7b314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:19:20, skipping insertion in model container [2018-11-07 14:19:20,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:19:17" (2/3) ... [2018-11-07 14:19:20,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b7b314 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:19:20, skipping insertion in model container [2018-11-07 14:19:20,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:19:20" (3/3) ... [2018-11-07 14:19:20,540 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label36_true-unreach-call.c [2018-11-07 14:19:20,551 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:19:20,562 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:19:20,580 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:19:20,623 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:19:20,623 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:19:20,624 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:19:20,624 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:19:20,624 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:19:20,624 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:19:20,624 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:19:20,624 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:19:20,652 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-11-07 14:19:20,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-07 14:19:20,661 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:19:20,662 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] [2018-11-07 14:19:20,665 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:19:20,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:19:20,672 INFO L82 PathProgramCache]: Analyzing trace with hash -7982076, now seen corresponding path program 1 times [2018-11-07 14:19:20,675 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:19:20,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:19:20,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:19:20,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:19:20,728 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:19:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:19:21,096 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:19:21,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:19:21,122 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:19:21,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 14:19:21,122 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:19:21,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 14:19:21,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 14:19:21,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:19:21,148 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-11-07 14:19:23,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:19:23,110 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-11-07 14:19:23,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 14:19:23,113 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2018-11-07 14:19:23,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:19:23,131 INFO L225 Difference]: With dead ends: 574 [2018-11-07 14:19:23,131 INFO L226 Difference]: Without dead ends: 356 [2018-11-07 14:19:23,138 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:19:23,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-11-07 14:19:23,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-11-07 14:19:23,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-11-07 14:19:23,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-11-07 14:19:23,223 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 46 [2018-11-07 14:19:23,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:19:23,224 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-11-07 14:19:23,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 14:19:23,224 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-11-07 14:19:23,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-11-07 14:19:23,236 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:19:23,236 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:19:23,237 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:19:23,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:19:23,237 INFO L82 PathProgramCache]: Analyzing trace with hash -443611109, now seen corresponding path program 1 times [2018-11-07 14:19:23,237 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:19:23,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:19:23,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:19:23,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:19:23,241 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:19:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:19:23,536 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:19:23,537 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:19:23,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:19:23,537 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:19:23,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:19:23,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:19:23,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:19:23,541 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-11-07 14:19:26,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:19:26,054 INFO L93 Difference]: Finished difference Result 1288 states and 2312 transitions. [2018-11-07 14:19:26,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 14:19:26,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2018-11-07 14:19:26,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:19:26,064 INFO L225 Difference]: With dead ends: 1288 [2018-11-07 14:19:26,064 INFO L226 Difference]: Without dead ends: 938 [2018-11-07 14:19:26,068 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 14:19:26,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2018-11-07 14:19:26,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 923. [2018-11-07 14:19:26,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2018-11-07 14:19:26,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1440 transitions. [2018-11-07 14:19:26,133 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1440 transitions. Word has length 129 [2018-11-07 14:19:26,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:19:26,134 INFO L480 AbstractCegarLoop]: Abstraction has 923 states and 1440 transitions. [2018-11-07 14:19:26,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:19:26,134 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1440 transitions. [2018-11-07 14:19:26,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-11-07 14:19:26,149 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:19:26,149 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:19:26,149 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:19:26,150 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:19:26,150 INFO L82 PathProgramCache]: Analyzing trace with hash -205231877, now seen corresponding path program 1 times [2018-11-07 14:19:26,150 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:19:26,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:19:26,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:19:26,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:19:26,152 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:19:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:19:26,502 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:19:26,502 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:19:26,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:19:26,503 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:19:26,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:19:26,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:19:26,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:19:26,505 INFO L87 Difference]: Start difference. First operand 923 states and 1440 transitions. Second operand 6 states. [2018-11-07 14:19:30,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:19:30,099 INFO L93 Difference]: Finished difference Result 2531 states and 4077 transitions. [2018-11-07 14:19:30,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:19:30,100 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-11-07 14:19:30,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:19:30,117 INFO L225 Difference]: With dead ends: 2531 [2018-11-07 14:19:30,118 INFO L226 Difference]: Without dead ends: 1614 [2018-11-07 14:19:30,129 INFO L604 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 [2018-11-07 14:19:30,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2018-11-07 14:19:30,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1583. [2018-11-07 14:19:30,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2018-11-07 14:19:30,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2316 transitions. [2018-11-07 14:19:30,198 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2316 transitions. Word has length 145 [2018-11-07 14:19:30,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:19:30,199 INFO L480 AbstractCegarLoop]: Abstraction has 1583 states and 2316 transitions. [2018-11-07 14:19:30,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:19:30,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2316 transitions. [2018-11-07 14:19:30,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-11-07 14:19:30,204 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:19:30,204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:19:30,205 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:19:30,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:19:30,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1849309771, now seen corresponding path program 1 times [2018-11-07 14:19:30,205 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:19:30,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:19:30,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:19:30,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:19:30,208 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:19:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:19:30,563 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:19:30,962 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:19:30,962 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:19:30,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:19:30,962 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:19:30,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:19:30,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:19:30,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:19:30,964 INFO L87 Difference]: Start difference. First operand 1583 states and 2316 transitions. Second operand 6 states. [2018-11-07 14:19:32,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:19:32,691 INFO L93 Difference]: Finished difference Result 3500 states and 5310 transitions. [2018-11-07 14:19:32,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:19:32,700 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2018-11-07 14:19:32,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:19:32,714 INFO L225 Difference]: With dead ends: 3500 [2018-11-07 14:19:32,715 INFO L226 Difference]: Without dead ends: 1923 [2018-11-07 14:19:32,722 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:19:32,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2018-11-07 14:19:32,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1882. [2018-11-07 14:19:32,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1882 states. [2018-11-07 14:19:32,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 2674 transitions. [2018-11-07 14:19:32,790 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 2674 transitions. Word has length 169 [2018-11-07 14:19:32,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:19:32,791 INFO L480 AbstractCegarLoop]: Abstraction has 1882 states and 2674 transitions. [2018-11-07 14:19:32,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:19:32,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 2674 transitions. [2018-11-07 14:19:32,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-11-07 14:19:32,799 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:19:32,799 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:19:32,800 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:19:32,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:19:32,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1437431884, now seen corresponding path program 1 times [2018-11-07 14:19:32,800 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:19:32,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:19:32,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:19:32,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:19:32,802 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:19:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:19:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:19:33,272 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:19:33,272 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:19:33,273 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 201 with the following transitions: [2018-11-07 14:19:33,275 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], [269], [271], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [546], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 14:19:33,325 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:19:33,325 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:19:33,740 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:19:34,287 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:19:34,290 INFO L272 AbstractInterpreter]: Visited 91 different actions 260 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 14:19:34,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:19:34,343 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:19:34,973 INFO L227 lantSequenceWeakener]: Weakened 57 states. On average, predicates are now at 75.64% of their original sizes. [2018-11-07 14:19:34,973 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:19:36,548 INFO L415 sIntCurrentIteration]: We unified 199 AI predicates to 199 [2018-11-07 14:19:36,549 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:19:36,550 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:19:36,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-11-07 14:19:36,550 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:19:36,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 14:19:36,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 14:19:36,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-07 14:19:36,552 INFO L87 Difference]: Start difference. First operand 1882 states and 2674 transitions. Second operand 21 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown