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/Problem15_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 21:12:18,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 21:12:18,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 21:12:18,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 21:12:18,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 21:12:18,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 21:12:18,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 21:12:18,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 21:12:18,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 21:12:18,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 21:12:18,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 21:12:18,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 21:12:18,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 21:12:18,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 21:12:18,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 21:12:18,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 21:12:18,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 21:12:18,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 21:12:18,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 21:12:18,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 21:12:18,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 21:12:18,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 21:12:18,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 21:12:18,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 21:12:18,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 21:12:18,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 21:12:18,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 21:12:18,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 21:12:18,242 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 [2019-10-02 21:12:18,256 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 21:12:18,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 21:12:18,257 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 21:12:18,257 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 21:12:18,258 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 21:12:18,258 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 21:12:18,258 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 21:12:18,259 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 21:12:18,259 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 21:12:18,259 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 21:12:18,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 21:12:18,260 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 21:12:18,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 21:12:18,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 21:12:18,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 21:12:18,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 21:12:18,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 21:12:18,261 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 21:12:18,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 21:12:18,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 21:12:18,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 21:12:18,262 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 21:12:18,262 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 21:12:18,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 21:12:18,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 21:12:18,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 21:12:18,263 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 21:12:18,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 21:12:18,263 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 21:12:18,263 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 21:12:18,292 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 21:12:18,304 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 21:12:18,308 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 21:12:18,309 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 21:12:18,309 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 21:12:18,310 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label53.c [2019-10-02 21:12:18,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/201a4655d/831e46a26fa24bbba63cd8e30906ceb2/FLAG3a6ec3b92 [2019-10-02 21:12:18,977 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 21:12:18,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label53.c [2019-10-02 21:12:18,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/201a4655d/831e46a26fa24bbba63cd8e30906ceb2/FLAG3a6ec3b92 [2019-10-02 21:12:19,182 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/201a4655d/831e46a26fa24bbba63cd8e30906ceb2 [2019-10-02 21:12:19,191 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 21:12:19,192 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 21:12:19,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 21:12:19,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 21:12:19,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 21:12:19,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 09:12:19" (1/1) ... [2019-10-02 21:12:19,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac9320a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:12:19, skipping insertion in model container [2019-10-02 21:12:19,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 09:12:19" (1/1) ... [2019-10-02 21:12:19,208 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 21:12:19,301 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 21:12:20,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 21:12:20,268 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 21:12:20,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 21:12:20,535 INFO L192 MainTranslator]: Completed translation [2019-10-02 21:12:20,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:12:20 WrapperNode [2019-10-02 21:12:20,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 21:12:20,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 21:12:20,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 21:12:20,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 21:12:20,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:12:20" (1/1) ... [2019-10-02 21:12:20,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:12:20" (1/1) ... [2019-10-02 21:12:20,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:12:20" (1/1) ... [2019-10-02 21:12:20,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:12:20" (1/1) ... [2019-10-02 21:12:20,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:12:20" (1/1) ... [2019-10-02 21:12:20,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:12:20" (1/1) ... [2019-10-02 21:12:20,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:12:20" (1/1) ... [2019-10-02 21:12:20,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 21:12:20,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 21:12:20,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 21:12:20,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 21:12:20,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:12:20" (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 [2019-10-02 21:12:20,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 21:12:20,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 21:12:20,804 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 21:12:20,804 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-02 21:12:20,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 21:12:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 21:12:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-02 21:12:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 21:12:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 21:12:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 21:12:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 21:12:20,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 21:12:20,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 21:12:24,218 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 21:12:24,219 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 21:12:24,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 09:12:24 BoogieIcfgContainer [2019-10-02 21:12:24,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 21:12:24,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 21:12:24,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 21:12:24,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 21:12:24,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 09:12:19" (1/3) ... [2019-10-02 21:12:24,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78388c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 09:12:24, skipping insertion in model container [2019-10-02 21:12:24,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:12:20" (2/3) ... [2019-10-02 21:12:24,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78388c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 09:12:24, skipping insertion in model container [2019-10-02 21:12:24,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 09:12:24" (3/3) ... [2019-10-02 21:12:24,235 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label53.c [2019-10-02 21:12:24,250 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 21:12:24,261 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 21:12:24,280 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 21:12:24,319 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 21:12:24,320 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 21:12:24,320 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 21:12:24,320 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 21:12:24,320 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 21:12:24,320 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 21:12:24,321 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 21:12:24,321 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 21:12:24,366 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2019-10-02 21:12:24,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-02 21:12:24,381 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 21:12:24,382 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 21:12:24,385 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 21:12:24,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:12:24,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1056547171, now seen corresponding path program 1 times [2019-10-02 21:12:24,393 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 21:12:24,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:12:24,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 21:12:24,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:12:24,456 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 21:12:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 21:12:24,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 21:12:24,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 21:12:24,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 21:12:24,814 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 21:12:24,869 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 21:12:24,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 21:12:24,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 21:12:24,883 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2019-10-02 21:12:28,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 21:12:28,973 INFO L93 Difference]: Finished difference Result 1115 states and 1741 transitions. [2019-10-02 21:12:28,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 21:12:28,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-10-02 21:12:28,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 21:12:29,006 INFO L225 Difference]: With dead ends: 1115 [2019-10-02 21:12:29,006 INFO L226 Difference]: Without dead ends: 1028 [2019-10-02 21:12:29,008 INFO L640 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 [2019-10-02 21:12:29,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2019-10-02 21:12:29,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 700. [2019-10-02 21:12:29,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2019-10-02 21:12:29,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1110 transitions. [2019-10-02 21:12:29,119 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1110 transitions. Word has length 53 [2019-10-02 21:12:29,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 21:12:29,120 INFO L475 AbstractCegarLoop]: Abstraction has 700 states and 1110 transitions. [2019-10-02 21:12:29,120 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 21:12:29,120 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1110 transitions. [2019-10-02 21:12:29,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-02 21:12:29,126 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 21:12:29,126 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 21:12:29,127 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 21:12:29,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:12:29,127 INFO L82 PathProgramCache]: Analyzing trace with hash -602725951, now seen corresponding path program 1 times [2019-10-02 21:12:29,128 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 21:12:29,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:12:29,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 21:12:29,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:12:29,130 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 21:12:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 21:12:29,381 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 21:12:29,381 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 21:12:29,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 21:12:29,382 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 21:12:29,383 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 21:12:29,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 21:12:29,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 21:12:29,384 INFO L87 Difference]: Start difference. First operand 700 states and 1110 transitions. Second operand 5 states. [2019-10-02 21:12:33,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 21:12:33,937 INFO L93 Difference]: Finished difference Result 1363 states and 1890 transitions. [2019-10-02 21:12:33,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-02 21:12:33,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2019-10-02 21:12:33,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 21:12:33,950 INFO L225 Difference]: With dead ends: 1363 [2019-10-02 21:12:33,950 INFO L226 Difference]: Without dead ends: 1363 [2019-10-02 21:12:33,951 INFO L640 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 [2019-10-02 21:12:33,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2019-10-02 21:12:34,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1333. [2019-10-02 21:12:34,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1333 states. [2019-10-02 21:12:34,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1846 transitions. [2019-10-02 21:12:34,014 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1846 transitions. Word has length 125 [2019-10-02 21:12:34,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 21:12:34,015 INFO L475 AbstractCegarLoop]: Abstraction has 1333 states and 1846 transitions. [2019-10-02 21:12:34,015 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 21:12:34,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1846 transitions. [2019-10-02 21:12:34,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-02 21:12:34,020 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 21:12:34,021 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 21:12:34,021 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 21:12:34,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:12:34,021 INFO L82 PathProgramCache]: Analyzing trace with hash 741212625, now seen corresponding path program 1 times [2019-10-02 21:12:34,022 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 21:12:34,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:12:34,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 21:12:34,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:12:34,023 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 21:12:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 21:12:34,334 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 21:12:34,334 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 21:12:34,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 21:12:34,335 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 21:12:34,338 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 21:12:34,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 21:12:34,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-02 21:12:34,339 INFO L87 Difference]: Start difference. First operand 1333 states and 1846 transitions. Second operand 6 states. [2019-10-02 21:12:41,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 21:12:41,962 INFO L93 Difference]: Finished difference Result 5075 states and 7082 transitions. [2019-10-02 21:12:41,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-02 21:12:41,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2019-10-02 21:12:41,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 21:12:42,000 INFO L225 Difference]: With dead ends: 5075 [2019-10-02 21:12:42,001 INFO L226 Difference]: Without dead ends: 5075 [2019-10-02 21:12:42,005 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-02 21:12:42,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5075 states. [2019-10-02 21:12:42,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5075 to 4748. [2019-10-02 21:12:42,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4748 states. [2019-10-02 21:12:42,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4748 states to 4748 states and 6574 transitions. [2019-10-02 21:12:42,176 INFO L78 Accepts]: Start accepts. Automaton has 4748 states and 6574 transitions. Word has length 133 [2019-10-02 21:12:42,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 21:12:42,178 INFO L475 AbstractCegarLoop]: Abstraction has 4748 states and 6574 transitions. [2019-10-02 21:12:42,178 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 21:12:42,179 INFO L276 IsEmpty]: Start isEmpty. Operand 4748 states and 6574 transitions. [2019-10-02 21:12:42,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2019-10-02 21:12:42,190 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 21:12:42,191 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-02 21:12:42,191 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 21:12:42,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:12:42,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1520888321, now seen corresponding path program 1 times [2019-10-02 21:12:42,191 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 21:12:42,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:12:42,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 21:12:42,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:12:42,193 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 21:12:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 21:12:42,416 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-02 21:12:42,416 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 21:12:42,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 21:12:42,417 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 21:12:42,418 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 21:12:42,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 21:12:42,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 21:12:42,419 INFO L87 Difference]: Start difference. First operand 4748 states and 6574 transitions. Second operand 4 states. [2019-10-02 21:12:46,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 21:12:46,437 INFO L93 Difference]: Finished difference Result 13691 states and 18144 transitions. [2019-10-02 21:12:46,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 21:12:46,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 211 [2019-10-02 21:12:46,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 21:12:46,509 INFO L225 Difference]: With dead ends: 13691 [2019-10-02 21:12:46,509 INFO L226 Difference]: Without dead ends: 13691 [2019-10-02 21:12:46,509 INFO L640 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 [2019-10-02 21:12:46,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13691 states. [2019-10-02 21:12:46,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13691 to 11845. [2019-10-02 21:12:46,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11845 states. [2019-10-02 21:12:46,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11845 states to 11845 states and 15841 transitions. [2019-10-02 21:12:46,862 INFO L78 Accepts]: Start accepts. Automaton has 11845 states and 15841 transitions. Word has length 211 [2019-10-02 21:12:46,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 21:12:46,864 INFO L475 AbstractCegarLoop]: Abstraction has 11845 states and 15841 transitions. [2019-10-02 21:12:46,864 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 21:12:46,864 INFO L276 IsEmpty]: Start isEmpty. Operand 11845 states and 15841 transitions. [2019-10-02 21:12:46,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2019-10-02 21:12:46,884 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 21:12:46,885 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-02 21:12:46,885 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 21:12:46,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:12:46,886 INFO L82 PathProgramCache]: Analyzing trace with hash 888259648, now seen corresponding path program 1 times [2019-10-02 21:12:46,886 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 21:12:46,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:12:46,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 21:12:46,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:12:46,888 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 21:12:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 21:12:47,455 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2019-10-02 21:12:47,456 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 21:12:47,456 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 21:12:47,457 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 447 with the following transitions: [2019-10-02 21:12:47,459 INFO L207 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [405], [407], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1167], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1648], [1652], [1654], [1661], [1662], [1663], [1665], [1666] [2019-10-02 21:12:47,519 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 21:12:47,519 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 21:12:58,220 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 21:12:58,223 INFO L272 AbstractInterpreter]: Visited 205 different actions 205 times. Never merged. Never widened. Performed 449 root evaluator evaluations with a maximum evaluation depth of 14. Performed 449 inverse root evaluator evaluations with a maximum inverse evaluation depth of 14. Never found a fixpoint. Largest state had 24 variables. [2019-10-02 21:12:58,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:12:58,229 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 21:13:12,208 INFO L227 lantSequenceWeakener]: Weakened 427 states. On average, predicates are now at 77.71% of their original sizes. [2019-10-02 21:13:12,209 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 21:13:12,313 INFO L420 sIntCurrentIteration]: We unified 445 AI predicates to 445 [2019-10-02 21:13:12,313 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 21:13:12,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 21:13:12,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2019-10-02 21:13:12,314 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 21:13:12,315 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-02 21:13:12,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-02 21:13:12,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-02 21:13:12,316 INFO L87 Difference]: Start difference. First operand 11845 states and 15841 transitions. Second operand 11 states. [2019-10-02 21:13:24,121 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.