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/Problem16_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 19:48:36,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 19:48:36,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 19:48:36,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 19:48:36,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 19:48:36,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 19:48:36,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 19:48:36,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 19:48:36,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 19:48:36,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 19:48:36,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 19:48:36,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 19:48:36,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 19:48:36,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 19:48:36,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 19:48:36,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 19:48:36,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 19:48:36,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 19:48:36,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 19:48:36,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 19:48:36,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 19:48:36,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 19:48:36,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 19:48:36,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 19:48:36,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-09 19:48:36,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-09 19:48:36,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-09 19:48:36,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-09 19:48:36,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-09 19:48:36,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-09 19:48:36,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 19:48:36,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 19:48:36,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 19:48:36,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 19:48:36,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 19:48:36,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 19:48:36,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 19:48:36,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 19:48:36,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 19:48:36,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 19:48:36,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 19:48:36,287 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 19:48:36,303 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 19:48:36,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 19:48:36,303 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 19:48:36,303 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 19:48:36,304 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 19:48:36,304 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 19:48:36,305 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 19:48:36,305 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 19:48:36,305 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 19:48:36,305 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 19:48:36,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 19:48:36,306 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 19:48:36,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 19:48:36,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 19:48:36,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 19:48:36,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 19:48:36,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 19:48:36,308 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 19:48:36,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 19:48:36,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 19:48:36,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 19:48:36,309 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 19:48:36,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 19:48:36,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 19:48:36,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 19:48:36,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 19:48:36,310 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 19:48:36,311 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 19:48:36,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 19:48:36,311 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 19:48:36,340 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 19:48:36,351 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 19:48:36,355 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 19:48:36,356 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 19:48:36,356 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 19:48:36,357 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label03.c [2019-09-09 19:48:36,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a4cdf7bc/794a2c8f312f4b209525f5af74976b86/FLAG711fc4710 [2019-09-09 19:48:37,035 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 19:48:37,036 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label03.c [2019-09-09 19:48:37,059 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a4cdf7bc/794a2c8f312f4b209525f5af74976b86/FLAG711fc4710 [2019-09-09 19:48:37,210 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a4cdf7bc/794a2c8f312f4b209525f5af74976b86 [2019-09-09 19:48:37,219 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 19:48:37,220 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 19:48:37,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 19:48:37,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 19:48:37,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 19:48:37,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 07:48:37" (1/1) ... [2019-09-09 19:48:37,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6108166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:48:37, skipping insertion in model container [2019-09-09 19:48:37,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 07:48:37" (1/1) ... [2019-09-09 19:48:37,237 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 19:48:37,303 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 19:48:38,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 19:48:38,234 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 19:48:38,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 19:48:38,491 INFO L192 MainTranslator]: Completed translation [2019-09-09 19:48:38,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:48:38 WrapperNode [2019-09-09 19:48:38,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 19:48:38,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 19:48:38,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 19:48:38,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 19:48:38,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:48:38" (1/1) ... [2019-09-09 19:48:38,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:48:38" (1/1) ... [2019-09-09 19:48:38,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:48:38" (1/1) ... [2019-09-09 19:48:38,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:48:38" (1/1) ... [2019-09-09 19:48:38,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:48:38" (1/1) ... [2019-09-09 19:48:38,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:48:38" (1/1) ... [2019-09-09 19:48:38,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:48:38" (1/1) ... [2019-09-09 19:48:38,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 19:48:38,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 19:48:38,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 19:48:38,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 19:48:38,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:48:38" (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 19:48:38,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 19:48:38,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 19:48:38,750 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 19:48:38,750 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 19:48:38,750 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 19:48:38,750 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 19:48:38,750 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 19:48:38,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 19:48:38,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 19:48:38,751 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 19:48:38,752 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 19:48:38,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 19:48:38,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 19:48:41,556 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 19:48:41,556 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 19:48:41,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 07:48:41 BoogieIcfgContainer [2019-09-09 19:48:41,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 19:48:41,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 19:48:41,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 19:48:41,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 19:48:41,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 07:48:37" (1/3) ... [2019-09-09 19:48:41,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511201ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 07:48:41, skipping insertion in model container [2019-09-09 19:48:41,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:48:38" (2/3) ... [2019-09-09 19:48:41,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511201ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 07:48:41, skipping insertion in model container [2019-09-09 19:48:41,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 07:48:41" (3/3) ... [2019-09-09 19:48:41,567 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label03.c [2019-09-09 19:48:41,577 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 19:48:41,586 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 19:48:41,603 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 19:48:41,631 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 19:48:41,631 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 19:48:41,631 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 19:48:41,631 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 19:48:41,631 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 19:48:41,632 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 19:48:41,632 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 19:48:41,632 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 19:48:41,660 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2019-09-09 19:48:41,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-09 19:48:41,670 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 19:48:41,671 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 19:48:41,673 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 19:48:41,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 19:48:41,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1120650517, now seen corresponding path program 1 times [2019-09-09 19:48:41,682 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 19:48:41,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 19:48:41,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 19:48:41,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 19:48:41,729 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 19:48:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 19:48:41,972 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 19:48:41,974 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 19:48:41,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 19:48:41,974 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 19:48:41,980 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 19:48:41,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 19:48:41,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 19:48:41,998 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 3 states. [2019-09-09 19:48:44,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 19:48:44,771 INFO L93 Difference]: Finished difference Result 750 states and 1289 transitions. [2019-09-09 19:48:44,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 19:48:44,775 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-09-09 19:48:44,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 19:48:44,798 INFO L225 Difference]: With dead ends: 750 [2019-09-09 19:48:44,799 INFO L226 Difference]: Without dead ends: 682 [2019-09-09 19:48:44,800 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 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 19:48:44,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2019-09-09 19:48:44,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2019-09-09 19:48:44,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2019-09-09 19:48:44,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1172 transitions. [2019-09-09 19:48:44,893 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1172 transitions. Word has length 12 [2019-09-09 19:48:44,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 19:48:44,894 INFO L475 AbstractCegarLoop]: Abstraction has 682 states and 1172 transitions. [2019-09-09 19:48:44,894 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 19:48:44,894 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1172 transitions. [2019-09-09 19:48:44,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-09 19:48:44,898 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 19:48:44,898 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 19:48:44,898 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 19:48:44,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 19:48:44,899 INFO L82 PathProgramCache]: Analyzing trace with hash 936875984, now seen corresponding path program 1 times [2019-09-09 19:48:44,899 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 19:48:44,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 19:48:44,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 19:48:44,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 19:48:44,901 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 19:48:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 19:48:45,154 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 19:48:45,155 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 19:48:45,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 19:48:45,155 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 19:48:45,158 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 19:48:45,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 19:48:45,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 19:48:45,159 INFO L87 Difference]: Start difference. First operand 682 states and 1172 transitions. Second operand 6 states. [2019-09-09 19:48:48,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 19:48:48,091 INFO L93 Difference]: Finished difference Result 1398 states and 2384 transitions. [2019-09-09 19:48:48,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 19:48:48,094 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2019-09-09 19:48:48,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 19:48:48,106 INFO L225 Difference]: With dead ends: 1398 [2019-09-09 19:48:48,106 INFO L226 Difference]: Without dead ends: 1398 [2019-09-09 19:48:48,107 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 19:48:48,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2019-09-09 19:48:48,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1382. [2019-09-09 19:48:48,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1382 states. [2019-09-09 19:48:48,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 2347 transitions. [2019-09-09 19:48:48,211 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 2347 transitions. Word has length 84 [2019-09-09 19:48:48,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 19:48:48,212 INFO L475 AbstractCegarLoop]: Abstraction has 1382 states and 2347 transitions. [2019-09-09 19:48:48,212 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 19:48:48,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 2347 transitions. [2019-09-09 19:48:48,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-09-09 19:48:48,217 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 19:48:48,217 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 19:48:48,217 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 19:48:48,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 19:48:48,218 INFO L82 PathProgramCache]: Analyzing trace with hash 2128606377, now seen corresponding path program 1 times [2019-09-09 19:48:48,218 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 19:48:48,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 19:48:48,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 19:48:48,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 19:48:48,220 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 19:48:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 19:48:48,417 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 19:48:48,418 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 19:48:48,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 19:48:48,418 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 19:48:48,419 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 19:48:48,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 19:48:48,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 19:48:48,420 INFO L87 Difference]: Start difference. First operand 1382 states and 2347 transitions. Second operand 6 states. [2019-09-09 19:48:51,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 19:48:51,104 INFO L93 Difference]: Finished difference Result 2120 states and 3448 transitions. [2019-09-09 19:48:51,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 19:48:51,105 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2019-09-09 19:48:51,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 19:48:51,120 INFO L225 Difference]: With dead ends: 2120 [2019-09-09 19:48:51,121 INFO L226 Difference]: Without dead ends: 2120 [2019-09-09 19:48:51,125 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 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 19:48:51,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2120 states. [2019-09-09 19:48:51,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2120 to 2088. [2019-09-09 19:48:51,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2088 states. [2019-09-09 19:48:51,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2088 states to 2088 states and 3354 transitions. [2019-09-09 19:48:51,218 INFO L78 Accepts]: Start accepts. Automaton has 2088 states and 3354 transitions. Word has length 113 [2019-09-09 19:48:51,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 19:48:51,220 INFO L475 AbstractCegarLoop]: Abstraction has 2088 states and 3354 transitions. [2019-09-09 19:48:51,220 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 19:48:51,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2088 states and 3354 transitions. [2019-09-09 19:48:51,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-09-09 19:48:51,225 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 19:48:51,225 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:51,226 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 19:48:51,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 19:48:51,227 INFO L82 PathProgramCache]: Analyzing trace with hash 333501888, now seen corresponding path program 1 times [2019-09-09 19:48:51,227 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 19:48:51,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 19:48:51,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 19:48:51,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 19:48:51,229 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 19:48:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 19:48:51,534 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 19:48:51,535 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 19:48:51,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 19:48:51,535 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 19:48:51,537 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 19:48:51,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 19:48:51,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 19:48:51,538 INFO L87 Difference]: Start difference. First operand 2088 states and 3354 transitions. Second operand 6 states. [2019-09-09 19:48:54,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 19:48:54,169 INFO L93 Difference]: Finished difference Result 3153 states and 4918 transitions. [2019-09-09 19:48:54,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 19:48:54,173 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2019-09-09 19:48:54,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 19:48:54,196 INFO L225 Difference]: With dead ends: 3153 [2019-09-09 19:48:54,196 INFO L226 Difference]: Without dead ends: 3153 [2019-09-09 19:48:54,197 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 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 19:48:54,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2019-09-09 19:48:54,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 3136. [2019-09-09 19:48:54,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3136 states. [2019-09-09 19:48:54,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3136 states to 3136 states and 4871 transitions. [2019-09-09 19:48:54,279 INFO L78 Accepts]: Start accepts. Automaton has 3136 states and 4871 transitions. Word has length 156 [2019-09-09 19:48:54,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 19:48:54,281 INFO L475 AbstractCegarLoop]: Abstraction has 3136 states and 4871 transitions. [2019-09-09 19:48:54,281 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 19:48:54,281 INFO L276 IsEmpty]: Start isEmpty. Operand 3136 states and 4871 transitions. [2019-09-09 19:48:54,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2019-09-09 19:48:54,288 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 19:48:54,289 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:54,289 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 19:48:54,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 19:48:54,290 INFO L82 PathProgramCache]: Analyzing trace with hash -751206508, now seen corresponding path program 1 times [2019-09-09 19:48:54,290 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 19:48:54,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 19:48:54,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 19:48:54,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 19:48:54,291 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 19:48:54,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 19:48:54,466 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 10 proven. 65 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-09 19:48:54,467 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 19:48:54,467 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 19:48:54,468 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 226 with the following transitions: [2019-09-09 19:48:54,472 INFO L207 CegarAbsIntRunner]: [0], [1], [180], [183], [185], [188], [196], [204], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [972], [1552], [1556], [1565], [1569], [1571], [1578], [1579], [1580], [1582], [1583] [2019-09-09 19:48:54,521 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 19:48:54,521 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 19:49:04,865 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 19:49:04,867 INFO L272 AbstractInterpreter]: Visited 149 different actions 149 times. Never merged. Never widened. Performed 320 root evaluator evaluations with a maximum evaluation depth of 14. Performed 320 inverse root evaluator evaluations with a maximum inverse evaluation depth of 14. Never found a fixpoint. Largest state had 24 variables. [2019-09-09 19:49:04,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 19:49:04,871 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 19:49:11,455 INFO L227 lantSequenceWeakener]: Weakened 206 states. On average, predicates are now at 77.28% of their original sizes. [2019-09-09 19:49:11,455 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 19:49:11,579 INFO L420 sIntCurrentIteration]: We unified 224 AI predicates to 224 [2019-09-09 19:49:11,580 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 19:49:11,580 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 19:49:11,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [5] total 15 [2019-09-09 19:49:11,581 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 19:49:11,581 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-09 19:49:11,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-09 19:49:11,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2019-09-09 19:49:11,582 INFO L87 Difference]: Start difference. First operand 3136 states and 4871 transitions. Second operand 12 states. [2019-09-09 19:49:36,681 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.