java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 17:27:47,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 17:27:47,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 17:27:47,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 17:27:47,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 17:27:47,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 17:27:47,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 17:27:47,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 17:27:47,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 17:27:47,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 17:27:47,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 17:27:47,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 17:27:47,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 17:27:47,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 17:27:47,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 17:27:47,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 17:27:47,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 17:27:47,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 17:27:47,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 17:27:47,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 17:27:47,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 17:27:47,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 17:27:47,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 17:27:47,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 17:27:47,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 17:27:47,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 17:27:47,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 17:27:47,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 17:27:47,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 17:27:47,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 17:27:47,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 17:27:47,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 17:27:47,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 17:27:47,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 17:27:47,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 17:27:47,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 17:27:47,364 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-09 17:27:47,381 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 17:27:47,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 17:27:47,382 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 17:27:47,382 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 17:27:47,383 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 17:27:47,383 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 17:27:47,383 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 17:27:47,383 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 17:27:47,384 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 17:27:47,384 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 17:27:47,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 17:27:47,385 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 17:27:47,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 17:27:47,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 17:27:47,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 17:27:47,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 17:27:47,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 17:27:47,386 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 17:27:47,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 17:27:47,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 17:27:47,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 17:27:47,387 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 17:27:47,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 17:27:47,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 17:27:47,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 17:27:47,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 17:27:47,388 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 17:27:47,388 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 17:27:47,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 17:27:47,389 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 17:27:47,434 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 17:27:47,449 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 17:27:47,452 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 17:27:47,454 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 17:27:47,454 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 17:27:47,455 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label33.c [2019-09-09 17:27:47,516 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f579c628e/f1a6fe8306474bfe9c6ee31c857b9409/FLAGa9cdef7f7 [2019-09-09 17:27:48,299 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 17:27:48,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label33.c [2019-09-09 17:27:48,339 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f579c628e/f1a6fe8306474bfe9c6ee31c857b9409/FLAGa9cdef7f7 [2019-09-09 17:27:48,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f579c628e/f1a6fe8306474bfe9c6ee31c857b9409 [2019-09-09 17:27:48,847 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 17:27:48,848 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 17:27:48,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 17:27:48,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 17:27:48,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 17:27:48,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:27:48" (1/1) ... [2019-09-09 17:27:48,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2701da4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:48, skipping insertion in model container [2019-09-09 17:27:48,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:27:48" (1/1) ... [2019-09-09 17:27:48,865 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 17:27:49,035 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 17:27:50,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 17:27:50,801 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 17:27:51,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 17:27:51,525 INFO L192 MainTranslator]: Completed translation [2019-09-09 17:27:51,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:51 WrapperNode [2019-09-09 17:27:51,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 17:27:51,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 17:27:51,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 17:27:51,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 17:27:51,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:51" (1/1) ... [2019-09-09 17:27:51,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:51" (1/1) ... [2019-09-09 17:27:51,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:51" (1/1) ... [2019-09-09 17:27:51,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:51" (1/1) ... [2019-09-09 17:27:51,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:51" (1/1) ... [2019-09-09 17:27:51,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:51" (1/1) ... [2019-09-09 17:27:51,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:51" (1/1) ... [2019-09-09 17:27:51,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 17:27:51,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 17:27:51,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 17:27:51,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 17:27:51,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:51" (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 [2019-09-09 17:27:51,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 17:27:51,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 17:27:51,916 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 17:27:51,916 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 17:27:51,917 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-09 17:27:51,917 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-09 17:27:51,917 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 17:27:51,917 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 17:27:51,917 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 17:27:51,918 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-09 17:27:51,918 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-09 17:27:51,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 17:27:51,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 17:27:51,918 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 17:27:51,919 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 17:27:51,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 17:27:51,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 17:27:58,214 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 17:27:58,215 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 17:27:58,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:27:58 BoogieIcfgContainer [2019-09-09 17:27:58,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 17:27:58,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 17:27:58,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 17:27:58,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 17:27:58,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 05:27:48" (1/3) ... [2019-09-09 17:27:58,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a48810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:27:58, skipping insertion in model container [2019-09-09 17:27:58,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:27:51" (2/3) ... [2019-09-09 17:27:58,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a48810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:27:58, skipping insertion in model container [2019-09-09 17:27:58,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:27:58" (3/3) ... [2019-09-09 17:27:58,227 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label33.c [2019-09-09 17:27:58,237 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 17:27:58,246 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 17:27:58,264 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 17:27:58,291 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 17:27:58,292 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 17:27:58,292 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 17:27:58,292 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 17:27:58,292 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 17:27:58,292 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 17:27:58,293 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 17:27:58,293 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 17:27:58,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2019-09-09 17:27:58,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-09-09 17:27:58,341 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:27:58,343 INFO L399 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] [2019-09-09 17:27:58,345 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:27:58,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:27:58,350 INFO L82 PathProgramCache]: Analyzing trace with hash 966889472, now seen corresponding path program 1 times [2019-09-09 17:27:58,353 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:27:58,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:27:58,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:27:58,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:27:58,406 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:27:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:27:58,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 17:27:58,733 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 17:27:58,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 17:27:58,734 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:27:58,740 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 17:27:58,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 17:27:58,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 17:27:58,758 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2019-09-09 17:28:08,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 17:28:08,423 INFO L93 Difference]: Finished difference Result 2851 states and 4840 transitions. [2019-09-09 17:28:08,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 17:28:08,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2019-09-09 17:28:08,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 17:28:08,464 INFO L225 Difference]: With dead ends: 2851 [2019-09-09 17:28:08,465 INFO L226 Difference]: Without dead ends: 2758 [2019-09-09 17:28:08,467 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 17:28:08,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2758 states. [2019-09-09 17:28:08,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2758 to 1919. [2019-09-09 17:28:08,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1919 states. [2019-09-09 17:28:08,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 3313 transitions. [2019-09-09 17:28:08,629 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 3313 transitions. Word has length 41 [2019-09-09 17:28:08,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 17:28:08,630 INFO L475 AbstractCegarLoop]: Abstraction has 1919 states and 3313 transitions. [2019-09-09 17:28:08,630 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 17:28:08,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 3313 transitions. [2019-09-09 17:28:08,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-09-09 17:28:08,635 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:28:08,636 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 17:28:08,636 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:28:08,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:28:08,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1658513383, now seen corresponding path program 1 times [2019-09-09 17:28:08,637 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:28:08,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:28:08,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:28:08,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:28:08,639 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:28:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:28:08,865 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 17:28:08,865 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 17:28:08,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 17:28:08,866 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:28:08,868 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 17:28:08,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 17:28:08,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 17:28:08,869 INFO L87 Difference]: Start difference. First operand 1919 states and 3313 transitions. Second operand 5 states. [2019-09-09 17:28:16,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 17:28:16,856 INFO L93 Difference]: Finished difference Result 3632 states and 5664 transitions. [2019-09-09 17:28:16,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 17:28:16,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2019-09-09 17:28:16,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 17:28:16,876 INFO L225 Difference]: With dead ends: 3632 [2019-09-09 17:28:16,877 INFO L226 Difference]: Without dead ends: 3632 [2019-09-09 17:28:16,878 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-09 17:28:16,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3632 states. [2019-09-09 17:28:16,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3632 to 3623. [2019-09-09 17:28:16,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3623 states. [2019-09-09 17:28:16,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 5644 transitions. [2019-09-09 17:28:16,966 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 5644 transitions. Word has length 110 [2019-09-09 17:28:16,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 17:28:16,966 INFO L475 AbstractCegarLoop]: Abstraction has 3623 states and 5644 transitions. [2019-09-09 17:28:16,967 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 17:28:16,967 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 5644 transitions. [2019-09-09 17:28:16,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-09 17:28:16,969 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:28:16,970 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 17:28:16,970 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:28:16,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:28:16,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1434785027, now seen corresponding path program 1 times [2019-09-09 17:28:16,971 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:28:16,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:28:16,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:28:16,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:28:16,972 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:28:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:28:17,114 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 17:28:17,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 17:28:17,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 17:28:17,115 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:28:17,116 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 17:28:17,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 17:28:17,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 17:28:17,117 INFO L87 Difference]: Start difference. First operand 3623 states and 5644 transitions. Second operand 5 states. [2019-09-09 17:28:25,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 17:28:25,365 INFO L93 Difference]: Finished difference Result 7191 states and 10294 transitions. [2019-09-09 17:28:25,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-09 17:28:25,367 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2019-09-09 17:28:25,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 17:28:25,405 INFO L225 Difference]: With dead ends: 7191 [2019-09-09 17:28:25,406 INFO L226 Difference]: Without dead ends: 7191 [2019-09-09 17:28:25,406 INFO L628 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 [2019-09-09 17:28:25,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7191 states. [2019-09-09 17:28:25,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7191 to 7086. [2019-09-09 17:28:25,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7086 states. [2019-09-09 17:28:25,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7086 states to 7086 states and 10105 transitions. [2019-09-09 17:28:25,663 INFO L78 Accepts]: Start accepts. Automaton has 7086 states and 10105 transitions. Word has length 112 [2019-09-09 17:28:25,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 17:28:25,665 INFO L475 AbstractCegarLoop]: Abstraction has 7086 states and 10105 transitions. [2019-09-09 17:28:25,666 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 17:28:25,666 INFO L276 IsEmpty]: Start isEmpty. Operand 7086 states and 10105 transitions. [2019-09-09 17:28:25,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-09-09 17:28:25,674 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:28:25,674 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 17:28:25,674 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:28:25,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:28:25,675 INFO L82 PathProgramCache]: Analyzing trace with hash -877925259, now seen corresponding path program 1 times [2019-09-09 17:28:25,675 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:28:25,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:28:25,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:28:25,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:28:25,677 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:28:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:28:25,850 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 17:28:25,850 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 17:28:25,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 17:28:25,851 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:28:25,852 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 17:28:25,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 17:28:25,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 17:28:25,853 INFO L87 Difference]: Start difference. First operand 7086 states and 10105 transitions. Second operand 4 states. [2019-09-09 17:28:34,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 17:28:34,444 INFO L93 Difference]: Finished difference Result 20403 states and 28400 transitions. [2019-09-09 17:28:34,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 17:28:34,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2019-09-09 17:28:34,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 17:28:34,526 INFO L225 Difference]: With dead ends: 20403 [2019-09-09 17:28:34,526 INFO L226 Difference]: Without dead ends: 20403 [2019-09-09 17:28:34,527 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 17:28:34,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20403 states. [2019-09-09 17:28:35,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20403 to 20366. [2019-09-09 17:28:35,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20366 states. [2019-09-09 17:28:35,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20366 states to 20366 states and 28309 transitions. [2019-09-09 17:28:35,080 INFO L78 Accepts]: Start accepts. Automaton has 20366 states and 28309 transitions. Word has length 156 [2019-09-09 17:28:35,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 17:28:35,082 INFO L475 AbstractCegarLoop]: Abstraction has 20366 states and 28309 transitions. [2019-09-09 17:28:35,082 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 17:28:35,082 INFO L276 IsEmpty]: Start isEmpty. Operand 20366 states and 28309 transitions. [2019-09-09 17:28:35,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2019-09-09 17:28:35,089 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:28:35,089 INFO L399 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-09 17:28:35,089 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:28:35,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:28:35,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1187206618, now seen corresponding path program 1 times [2019-09-09 17:28:35,090 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:28:35,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:28:35,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:28:35,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:28:35,092 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:28:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:28:35,377 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 17:28:35,378 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 17:28:35,378 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 17:28:35,379 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 271 with the following transitions: [2019-09-09 17:28:35,382 INFO L207 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2863], [2865], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3308], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4251], [4255], [4257], [4268], [4269], [4270], [4272], [4273] [2019-09-09 17:28:35,485 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 17:28:35,485 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 17:29:41,990 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 17:29:41,992 INFO L272 AbstractInterpreter]: Visited 123 different actions 123 times. Never merged. Never widened. Performed 164 root evaluator evaluations with a maximum evaluation depth of 17. Performed 164 inverse root evaluator evaluations with a maximum inverse evaluation depth of 17. Never found a fixpoint. Largest state had 26 variables. [2019-09-09 17:29:41,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:29:41,997 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 17:31:13,814 INFO L227 lantSequenceWeakener]: Weakened 259 states. On average, predicates are now at 71.05% of their original sizes. [2019-09-09 17:31:13,814 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 17:31:13,880 INFO L420 sIntCurrentIteration]: We unified 269 AI predicates to 269 [2019-09-09 17:31:13,880 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 17:31:13,881 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 17:31:13,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2019-09-09 17:31:13,882 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:31:13,882 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-09 17:31:13,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-09 17:31:13,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-09-09 17:31:13,883 INFO L87 Difference]: Start difference. First operand 20366 states and 28309 transitions. Second operand 8 states. [2019-09-09 17:34:34,350 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.