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_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 17:18:11,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 17:18:11,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 17:18:11,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 17:18:11,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 17:18:11,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 17:18:11,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 17:18:11,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 17:18:11,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 17:18:11,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 17:18:11,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 17:18:11,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 17:18:11,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 17:18:11,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 17:18:11,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 17:18:11,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 17:18:11,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 17:18:11,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 17:18:11,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 17:18:11,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 17:18:11,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 17:18:11,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 17:18:11,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 17:18:11,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 17:18:11,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 17:18:11,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 17:18:11,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 17:18:11,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 17:18:11,080 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 17:18:11,105 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 17:18:11,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 17:18:11,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 17:18:11,106 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 17:18:11,107 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 17:18:11,107 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 17:18:11,108 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 17:18:11,108 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 17:18:11,108 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 17:18:11,109 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 17:18:11,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 17:18:11,110 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 17:18:11,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 17:18:11,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 17:18:11,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 17:18:11,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 17:18:11,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 17:18:11,113 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 17:18:11,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 17:18:11,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 17:18:11,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 17:18:11,114 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 17:18:11,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 17:18:11,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 17:18:11,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 17:18:11,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 17:18:11,115 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 17:18:11,116 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 17:18:11,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 17:18:11,116 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 17:18:11,162 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 17:18:11,179 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 17:18:11,182 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 17:18:11,184 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 17:18:11,184 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 17:18:11,185 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label25.c [2019-09-09 17:18:11,246 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c98f3cb95/a6edafd1520543d4bd1a9b1cfa887807/FLAGebfa3fd24 [2019-09-09 17:18:12,120 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 17:18:12,121 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label25.c [2019-09-09 17:18:12,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c98f3cb95/a6edafd1520543d4bd1a9b1cfa887807/FLAGebfa3fd24 [2019-09-09 17:18:12,620 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c98f3cb95/a6edafd1520543d4bd1a9b1cfa887807 [2019-09-09 17:18:12,629 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 17:18:12,631 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 17:18:12,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 17:18:12,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 17:18:12,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 17:18:12,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:18:12" (1/1) ... [2019-09-09 17:18:12,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e7ff09f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:18:12, skipping insertion in model container [2019-09-09 17:18:12,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:18:12" (1/1) ... [2019-09-09 17:18:12,647 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 17:18:12,824 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 17:18:14,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 17:18:14,433 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 17:18:15,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 17:18:15,183 INFO L192 MainTranslator]: Completed translation [2019-09-09 17:18:15,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:18:15 WrapperNode [2019-09-09 17:18:15,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 17:18:15,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 17:18:15,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 17:18:15,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 17:18:15,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:18:15" (1/1) ... [2019-09-09 17:18:15,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:18:15" (1/1) ... [2019-09-09 17:18:15,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:18:15" (1/1) ... [2019-09-09 17:18:15,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:18:15" (1/1) ... [2019-09-09 17:18:15,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:18:15" (1/1) ... [2019-09-09 17:18:15,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:18:15" (1/1) ... [2019-09-09 17:18:15,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:18:15" (1/1) ... [2019-09-09 17:18:15,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 17:18:15,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 17:18:15,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 17:18:15,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 17:18:15,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:18:15" (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 17:18:15,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 17:18:15,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 17:18:15,588 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 17:18:15,589 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 17:18:15,589 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-09 17:18:15,589 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-09 17:18:15,589 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 17:18:15,589 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 17:18:15,590 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 17:18:15,590 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-09 17:18:15,590 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-09 17:18:15,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 17:18:15,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 17:18:15,592 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 17:18:15,592 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 17:18:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 17:18:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 17:18:22,385 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 17:18:22,386 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 17:18:22,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:18:22 BoogieIcfgContainer [2019-09-09 17:18:22,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 17:18:22,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 17:18:22,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 17:18:22,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 17:18:22,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 05:18:12" (1/3) ... [2019-09-09 17:18:22,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14ef64ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:18:22, skipping insertion in model container [2019-09-09 17:18:22,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:18:15" (2/3) ... [2019-09-09 17:18:22,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14ef64ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:18:22, skipping insertion in model container [2019-09-09 17:18:22,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:18:22" (3/3) ... [2019-09-09 17:18:22,399 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label25.c [2019-09-09 17:18:22,411 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 17:18:22,421 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 17:18:22,438 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 17:18:22,465 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 17:18:22,466 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 17:18:22,466 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 17:18:22,466 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 17:18:22,466 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 17:18:22,466 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 17:18:22,466 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 17:18:22,467 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 17:18:22,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2019-09-09 17:18:22,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-09-09 17:18:22,530 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:18:22,530 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] [2019-09-09 17:18:22,532 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:18:22,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:18:22,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1804033680, now seen corresponding path program 1 times [2019-09-09 17:18:22,541 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:18:22,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:18:22,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:18:22,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:18:22,582 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:18:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:18:22,776 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 17:18:22,778 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 17:18:22,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 17:18:22,779 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:18:22,784 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 17:18:22,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 17:18:22,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 17:18:22,802 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2019-09-09 17:18:34,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 17:18:34,734 INFO L93 Difference]: Finished difference Result 2946 states and 5042 transitions. [2019-09-09 17:18:34,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 17:18:34,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2019-09-09 17:18:34,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 17:18:34,778 INFO L225 Difference]: With dead ends: 2946 [2019-09-09 17:18:34,778 INFO L226 Difference]: Without dead ends: 2859 [2019-09-09 17:18:34,780 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 17:18:34,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2019-09-09 17:18:34,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 1920. [2019-09-09 17:18:34,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2019-09-09 17:18:34,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 3303 transitions. [2019-09-09 17:18:34,951 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 3303 transitions. Word has length 29 [2019-09-09 17:18:34,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 17:18:34,952 INFO L475 AbstractCegarLoop]: Abstraction has 1920 states and 3303 transitions. [2019-09-09 17:18:34,952 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 17:18:34,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 3303 transitions. [2019-09-09 17:18:34,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-09-09 17:18:34,960 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:18:34,961 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:18:34,961 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:18:34,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:18:34,962 INFO L82 PathProgramCache]: Analyzing trace with hash -678409448, now seen corresponding path program 1 times [2019-09-09 17:18:34,962 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:18:34,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:18:34,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:18:34,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:18:34,964 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:18:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:18:35,200 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 17:18:35,201 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 17:18:35,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 17:18:35,201 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:18:35,205 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 17:18:35,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 17:18:35,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 17:18:35,207 INFO L87 Difference]: Start difference. First operand 1920 states and 3303 transitions. Second operand 6 states. [2019-09-09 17:18:43,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 17:18:43,668 INFO L93 Difference]: Finished difference Result 3659 states and 6181 transitions. [2019-09-09 17:18:43,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 17:18:43,668 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2019-09-09 17:18:43,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 17:18:43,691 INFO L225 Difference]: With dead ends: 3659 [2019-09-09 17:18:43,691 INFO L226 Difference]: Without dead ends: 3659 [2019-09-09 17:18:43,692 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-09 17:18:43,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2019-09-09 17:18:43,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 3612. [2019-09-09 17:18:43,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3612 states. [2019-09-09 17:18:43,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3612 states to 3612 states and 6092 transitions. [2019-09-09 17:18:43,813 INFO L78 Accepts]: Start accepts. Automaton has 3612 states and 6092 transitions. Word has length 99 [2019-09-09 17:18:43,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 17:18:43,814 INFO L475 AbstractCegarLoop]: Abstraction has 3612 states and 6092 transitions. [2019-09-09 17:18:43,814 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 17:18:43,815 INFO L276 IsEmpty]: Start isEmpty. Operand 3612 states and 6092 transitions. [2019-09-09 17:18:43,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-09-09 17:18:43,824 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:18:43,824 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:18:43,825 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:18:43,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:18:43,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1037005519, now seen corresponding path program 1 times [2019-09-09 17:18:43,825 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:18:43,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:18:43,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:18:43,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:18:43,828 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:18:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:18:43,997 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 17:18:43,998 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 17:18:43,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 17:18:43,998 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:18:43,999 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 17:18:43,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 17:18:43,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 17:18:43,999 INFO L87 Difference]: Start difference. First operand 3612 states and 6092 transitions. Second operand 6 states. [2019-09-09 17:18:51,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 17:18:51,929 INFO L93 Difference]: Finished difference Result 5389 states and 8684 transitions. [2019-09-09 17:18:51,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 17:18:51,929 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2019-09-09 17:18:51,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 17:18:51,959 INFO L225 Difference]: With dead ends: 5389 [2019-09-09 17:18:51,959 INFO L226 Difference]: Without dead ends: 5389 [2019-09-09 17:18:51,968 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-09 17:18:51,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5389 states. [2019-09-09 17:18:52,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5389 to 5334. [2019-09-09 17:18:52,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5334 states. [2019-09-09 17:18:52,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5334 states to 5334 states and 8555 transitions. [2019-09-09 17:18:52,113 INFO L78 Accepts]: Start accepts. Automaton has 5334 states and 8555 transitions. Word has length 102 [2019-09-09 17:18:52,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 17:18:52,115 INFO L475 AbstractCegarLoop]: Abstraction has 5334 states and 8555 transitions. [2019-09-09 17:18:52,115 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 17:18:52,115 INFO L276 IsEmpty]: Start isEmpty. Operand 5334 states and 8555 transitions. [2019-09-09 17:18:52,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-09 17:18:52,118 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:18:52,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:18:52,119 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:18:52,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:18:52,119 INFO L82 PathProgramCache]: Analyzing trace with hash -507297851, now seen corresponding path program 1 times [2019-09-09 17:18:52,119 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:18:52,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:18:52,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:18:52,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:18:52,121 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:18:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:18:52,276 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 17:18:52,276 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 17:18:52,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 17:18:52,276 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:18:52,277 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 17:18:52,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 17:18:52,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 17:18:52,278 INFO L87 Difference]: Start difference. First operand 5334 states and 8555 transitions. Second operand 5 states. [2019-09-09 17:19:00,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 17:19:00,779 INFO L93 Difference]: Finished difference Result 10876 states and 16837 transitions. [2019-09-09 17:19:00,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-09 17:19:00,780 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2019-09-09 17:19:00,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 17:19:00,842 INFO L225 Difference]: With dead ends: 10876 [2019-09-09 17:19:00,842 INFO L226 Difference]: Without dead ends: 10876 [2019-09-09 17:19:00,843 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 17:19:00,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10876 states. [2019-09-09 17:19:01,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10876 to 10658. [2019-09-09 17:19:01,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10658 states. [2019-09-09 17:19:01,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10658 states to 10658 states and 16087 transitions. [2019-09-09 17:19:01,146 INFO L78 Accepts]: Start accepts. Automaton has 10658 states and 16087 transitions. Word has length 112 [2019-09-09 17:19:01,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 17:19:01,148 INFO L475 AbstractCegarLoop]: Abstraction has 10658 states and 16087 transitions. [2019-09-09 17:19:01,148 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 17:19:01,149 INFO L276 IsEmpty]: Start isEmpty. Operand 10658 states and 16087 transitions. [2019-09-09 17:19:01,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-09-09 17:19:01,150 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 17:19:01,151 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:19:01,152 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 17:19:01,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:19:01,153 INFO L82 PathProgramCache]: Analyzing trace with hash -123191767, now seen corresponding path program 1 times [2019-09-09 17:19:01,153 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 17:19:01,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:19:01,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 17:19:01,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 17:19:01,154 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 17:19:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 17:19:01,300 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-09 17:19:01,301 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 17:19:01,301 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 17:19:01,302 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 130 with the following transitions: [2019-09-09 17:19:01,305 INFO L207 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2767], [2769], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [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], [3265], [4238], [4242], [4251], [4255], [4257], [4268], [4269], [4270], [4272], [4273] [2019-09-09 17:19:01,393 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 17:19:01,393 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 17:21:49,068 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 17:21:49,071 INFO L272 AbstractInterpreter]: Visited 107 different actions 208 times. Merged at 4 different actions 4 times. Never widened. Performed 406 root evaluator evaluations with a maximum evaluation depth of 17. Performed 406 inverse root evaluator evaluations with a maximum inverse evaluation depth of 17. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2019-09-09 17:21:49,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 17:21:49,078 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 17:23:20,954 INFO L227 lantSequenceWeakener]: Weakened 126 states. On average, predicates are now at 70.91% of their original sizes. [2019-09-09 17:23:20,954 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 17:23:21,039 INFO L420 sIntCurrentIteration]: We unified 128 AI predicates to 128 [2019-09-09 17:23:21,039 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 17:23:21,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 17:23:21,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2019-09-09 17:23:21,041 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 17:23:21,041 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-09 17:23:21,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-09 17:23:21,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-09-09 17:23:21,042 INFO L87 Difference]: Start difference. First operand 10658 states and 16087 transitions. Second operand 10 states. [2019-09-09 17:27:15,028 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.