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/Problem12_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 16:35:09,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 16:35:09,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 16:35:10,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 16:35:10,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 16:35:10,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 16:35:10,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 16:35:10,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 16:35:10,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 16:35:10,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 16:35:10,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 16:35:10,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 16:35:10,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 16:35:10,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 16:35:10,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 16:35:10,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 16:35:10,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 16:35:10,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 16:35:10,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 16:35:10,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 16:35:10,072 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 16:35:10,087 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 16:35:10,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 16:35:10,087 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 16:35:10,088 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 16:35:10,088 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 16:35:10,088 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 16:35:10,089 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 16:35:10,089 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 16:35:10,089 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 16:35:10,089 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 16:35:10,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 16:35:10,090 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 16:35:10,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 16:35:10,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 16:35:10,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 16:35:10,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 16:35:10,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 16:35:10,091 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 16:35:10,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 16:35:10,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 16:35:10,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 16:35:10,092 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 16:35:10,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 16:35:10,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 16:35:10,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 16:35:10,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 16:35:10,093 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 16:35:10,093 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 16:35:10,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 16:35:10,094 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 16:35:10,122 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 16:35:10,139 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 16:35:10,143 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 16:35:10,145 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 16:35:10,147 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 16:35:10,148 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label43.c [2019-09-09 16:35:10,206 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcdec1744/5ed07f8f5d2242bda4e8750accfcdf38/FLAG3163814e0 [2019-09-09 16:35:10,932 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 16:35:10,933 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label43.c [2019-09-09 16:35:10,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcdec1744/5ed07f8f5d2242bda4e8750accfcdf38/FLAG3163814e0 [2019-09-09 16:35:11,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcdec1744/5ed07f8f5d2242bda4e8750accfcdf38 [2019-09-09 16:35:11,025 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 16:35:11,027 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 16:35:11,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 16:35:11,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 16:35:11,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 16:35:11,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 04:35:11" (1/1) ... [2019-09-09 16:35:11,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ad31ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 04:35:11, skipping insertion in model container [2019-09-09 16:35:11,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 04:35:11" (1/1) ... [2019-09-09 16:35:11,045 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 16:35:11,220 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 16:35:12,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 16:35:12,627 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 16:35:13,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 16:35:13,388 INFO L192 MainTranslator]: Completed translation [2019-09-09 16:35:13,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 04:35:13 WrapperNode [2019-09-09 16:35:13,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 16:35:13,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 16:35:13,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 16:35:13,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 16:35:13,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 04:35:13" (1/1) ... [2019-09-09 16:35:13,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 04:35:13" (1/1) ... [2019-09-09 16:35:13,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 04:35:13" (1/1) ... [2019-09-09 16:35:13,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 04:35:13" (1/1) ... [2019-09-09 16:35:13,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 04:35:13" (1/1) ... [2019-09-09 16:35:13,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 04:35:13" (1/1) ... [2019-09-09 16:35:13,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 04:35:13" (1/1) ... [2019-09-09 16:35:13,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 16:35:13,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 16:35:13,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 16:35:13,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 16:35:13,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 04:35:13" (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 16:35:13,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 16:35:13,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 16:35:13,714 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 16:35:13,714 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 16:35:13,714 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-09 16:35:13,714 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-09 16:35:13,715 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 16:35:13,716 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 16:35:13,716 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 16:35:13,716 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-09 16:35:13,716 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-09 16:35:13,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 16:35:13,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 16:35:13,718 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 16:35:13,718 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 16:35:13,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 16:35:13,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 16:35:18,477 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 16:35:18,478 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 16:35:18,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 04:35:18 BoogieIcfgContainer [2019-09-09 16:35:18,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 16:35:18,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 16:35:18,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 16:35:18,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 16:35:18,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 04:35:11" (1/3) ... [2019-09-09 16:35:18,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30318b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 04:35:18, skipping insertion in model container [2019-09-09 16:35:18,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 04:35:13" (2/3) ... [2019-09-09 16:35:18,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30318b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 04:35:18, skipping insertion in model container [2019-09-09 16:35:18,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 04:35:18" (3/3) ... [2019-09-09 16:35:18,499 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label43.c [2019-09-09 16:35:18,511 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 16:35:18,522 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 16:35:18,539 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 16:35:18,570 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 16:35:18,570 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 16:35:18,571 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 16:35:18,571 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 16:35:18,571 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 16:35:18,571 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 16:35:18,571 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 16:35:18,571 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 16:35:18,619 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-09-09 16:35:18,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-09 16:35:18,634 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 16:35:18,635 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, 1, 1, 1, 1, 1, 1] [2019-09-09 16:35:18,638 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 16:35:18,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 16:35:18,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1358413806, now seen corresponding path program 1 times [2019-09-09 16:35:18,646 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 16:35:18,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 16:35:18,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 16:35:18,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 16:35:18,691 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 16:35:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 16:35:18,995 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 16:35:18,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 16:35:18,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 16:35:18,998 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 16:35:19,004 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 16:35:19,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 16:35:19,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 16:35:19,023 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 3 states. [2019-09-09 16:35:24,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 16:35:24,527 INFO L93 Difference]: Finished difference Result 1610 states and 2807 transitions. [2019-09-09 16:35:24,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 16:35:24,528 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-09-09 16:35:24,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 16:35:24,565 INFO L225 Difference]: With dead ends: 1610 [2019-09-09 16:35:24,566 INFO L226 Difference]: Without dead ends: 1542 [2019-09-09 16:35:24,568 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 16:35:24,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2019-09-09 16:35:24,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2019-09-09 16:35:24,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2019-09-09 16:35:24,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2702 transitions. [2019-09-09 16:35:24,708 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2702 transitions. Word has length 47 [2019-09-09 16:35:24,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 16:35:24,709 INFO L475 AbstractCegarLoop]: Abstraction has 1542 states and 2702 transitions. [2019-09-09 16:35:24,709 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 16:35:24,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2702 transitions. [2019-09-09 16:35:24,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-09-09 16:35:24,715 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 16:35:24,715 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, 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 16:35:24,716 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 16:35:24,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 16:35:24,716 INFO L82 PathProgramCache]: Analyzing trace with hash 155650379, now seen corresponding path program 1 times [2019-09-09 16:35:24,716 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 16:35:24,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 16:35:24,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 16:35:24,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 16:35:24,718 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 16:35:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 16:35:24,886 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 16:35:24,887 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 16:35:24,887 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 16:35:24,887 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 16:35:24,890 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 16:35:24,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 16:35:24,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 16:35:24,891 INFO L87 Difference]: Start difference. First operand 1542 states and 2702 transitions. Second operand 4 states. [2019-09-09 16:35:32,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 16:35:32,964 INFO L93 Difference]: Finished difference Result 4610 states and 7729 transitions. [2019-09-09 16:35:32,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 16:35:32,966 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2019-09-09 16:35:32,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 16:35:32,995 INFO L225 Difference]: With dead ends: 4610 [2019-09-09 16:35:32,995 INFO L226 Difference]: Without dead ends: 4610 [2019-09-09 16:35:32,997 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 16:35:33,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4610 states. [2019-09-09 16:35:33,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4610 to 4610. [2019-09-09 16:35:33,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4610 states. [2019-09-09 16:35:33,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 7729 transitions. [2019-09-09 16:35:33,133 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 7729 transitions. Word has length 122 [2019-09-09 16:35:33,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 16:35:33,134 INFO L475 AbstractCegarLoop]: Abstraction has 4610 states and 7729 transitions. [2019-09-09 16:35:33,134 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 16:35:33,135 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 7729 transitions. [2019-09-09 16:35:33,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-09-09 16:35:33,139 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 16:35:33,139 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, 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] [2019-09-09 16:35:33,139 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 16:35:33,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 16:35:33,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1116982291, now seen corresponding path program 1 times [2019-09-09 16:35:33,140 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 16:35:33,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 16:35:33,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 16:35:33,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 16:35:33,142 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 16:35:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 16:35:33,364 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 16:35:33,365 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 16:35:33,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 16:35:33,365 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 16:35:33,366 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 16:35:33,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 16:35:33,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-09 16:35:33,367 INFO L87 Difference]: Start difference. First operand 4610 states and 7729 transitions. Second operand 5 states. [2019-09-09 16:35:39,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 16:35:39,713 INFO L93 Difference]: Finished difference Result 9406 states and 14687 transitions. [2019-09-09 16:35:39,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-09 16:35:39,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2019-09-09 16:35:39,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 16:35:39,770 INFO L225 Difference]: With dead ends: 9406 [2019-09-09 16:35:39,770 INFO L226 Difference]: Without dead ends: 9406 [2019-09-09 16:35:39,780 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 16:35:39,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9406 states. [2019-09-09 16:35:40,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9406 to 9324. [2019-09-09 16:35:40,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9324 states. [2019-09-09 16:35:40,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9324 states to 9324 states and 14436 transitions. [2019-09-09 16:35:40,067 INFO L78 Accepts]: Start accepts. Automaton has 9324 states and 14436 transitions. Word has length 126 [2019-09-09 16:35:40,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 16:35:40,068 INFO L475 AbstractCegarLoop]: Abstraction has 9324 states and 14436 transitions. [2019-09-09 16:35:40,068 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 16:35:40,068 INFO L276 IsEmpty]: Start isEmpty. Operand 9324 states and 14436 transitions. [2019-09-09 16:35:40,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-09-09 16:35:40,072 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 16:35:40,073 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, 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] [2019-09-09 16:35:40,073 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 16:35:40,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 16:35:40,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1241395422, now seen corresponding path program 1 times [2019-09-09 16:35:40,073 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 16:35:40,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 16:35:40,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 16:35:40,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 16:35:40,075 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 16:35:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 16:35:40,287 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 16:35:40,287 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 16:35:40,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 16:35:40,288 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 16:35:40,288 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 16:35:40,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 16:35:40,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-09-09 16:35:40,289 INFO L87 Difference]: Start difference. First operand 9324 states and 14436 transitions. Second operand 6 states. [2019-09-09 16:35:52,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 16:35:52,907 INFO L93 Difference]: Finished difference Result 28320 states and 43592 transitions. [2019-09-09 16:35:52,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 16:35:52,908 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2019-09-09 16:35:52,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 16:35:53,103 INFO L225 Difference]: With dead ends: 28320 [2019-09-09 16:35:53,103 INFO L226 Difference]: Without dead ends: 28320 [2019-09-09 16:35:53,104 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-09 16:35:53,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28320 states. [2019-09-09 16:35:53,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28320 to 28276. [2019-09-09 16:35:53,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28276 states. [2019-09-09 16:35:54,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28276 states to 28276 states and 43176 transitions. [2019-09-09 16:35:54,014 INFO L78 Accepts]: Start accepts. Automaton has 28276 states and 43176 transitions. Word has length 137 [2019-09-09 16:35:54,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 16:35:54,016 INFO L475 AbstractCegarLoop]: Abstraction has 28276 states and 43176 transitions. [2019-09-09 16:35:54,017 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 16:35:54,017 INFO L276 IsEmpty]: Start isEmpty. Operand 28276 states and 43176 transitions. [2019-09-09 16:35:54,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-09-09 16:35:54,022 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 16:35:54,023 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:35:54,023 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 16:35:54,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 16:35:54,023 INFO L82 PathProgramCache]: Analyzing trace with hash -669065665, now seen corresponding path program 1 times [2019-09-09 16:35:54,024 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 16:35:54,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 16:35:54,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 16:35:54,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 16:35:54,025 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 16:35:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 16:35:55,130 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 80 proven. 75 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-09 16:35:55,131 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 16:35:55,131 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 16:35:55,132 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 235 with the following transitions: [2019-09-09 16:35:55,137 INFO L207 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2151], [2153], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2400], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2516], [3240], [3244], [3253], [3257], [3259], [3270], [3271], [3272], [3274], [3275] [2019-09-09 16:35:55,211 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 16:35:55,216 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 16:36:17,976 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 16:36:17,978 INFO L272 AbstractInterpreter]: Visited 113 different actions 113 times. Never merged. Never widened. Performed 270 root evaluator evaluations with a maximum evaluation depth of 16. Performed 270 inverse root evaluator evaluations with a maximum inverse evaluation depth of 16. Never found a fixpoint. Largest state had 26 variables. [2019-09-09 16:36:17,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 16:36:17,984 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 16:36:40,670 INFO L227 lantSequenceWeakener]: Weakened 215 states. On average, predicates are now at 75.68% of their original sizes. [2019-09-09 16:36:40,671 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 16:36:40,761 INFO L420 sIntCurrentIteration]: We unified 233 AI predicates to 233 [2019-09-09 16:36:40,762 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 16:36:40,763 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 16:36:40,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2019-09-09 16:36:40,763 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 16:36:40,764 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-09 16:36:40,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-09 16:36:40,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-09-09 16:36:40,765 INFO L87 Difference]: Start difference. First operand 28276 states and 43176 transitions. Second operand 11 states. [2019-09-09 16:39:40,476 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.