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/Problem19_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 23:21:11,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 23:21:11,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 23:21:11,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 23:21:11,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 23:21:11,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 23:21:11,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 23:21:11,382 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 23:21:11,397 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 23:21:11,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 23:21:11,398 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 23:21:11,398 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 23:21:11,399 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 23:21:11,399 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 23:21:11,399 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 23:21:11,399 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 23:21:11,400 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 23:21:11,400 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 23:21:11,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 23:21:11,401 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 23:21:11,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 23:21:11,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 23:21:11,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 23:21:11,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 23:21:11,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 23:21:11,403 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 23:21:11,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 23:21:11,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 23:21:11,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 23:21:11,404 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 23:21:11,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 23:21:11,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 23:21:11,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 23:21:11,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 23:21:11,405 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 23:21:11,405 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 23:21:11,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 23:21:11,406 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 23:21:11,446 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 23:21:11,458 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 23:21:11,461 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 23:21:11,462 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 23:21:11,463 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 23:21:11,464 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label31.c [2019-09-09 23:21:11,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65587427b/93d1bee5532c4108af1f97e2878d2087/FLAG4418d8176 [2019-09-09 23:21:12,485 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 23:21:12,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label31.c [2019-09-09 23:21:12,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65587427b/93d1bee5532c4108af1f97e2878d2087/FLAG4418d8176 [2019-09-09 23:21:12,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65587427b/93d1bee5532c4108af1f97e2878d2087 [2019-09-09 23:21:12,867 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 23:21:12,869 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 23:21:12,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 23:21:12,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 23:21:12,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 23:21:12,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 11:21:12" (1/1) ... [2019-09-09 23:21:12,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f1699d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:21:12, skipping insertion in model container [2019-09-09 23:21:12,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 11:21:12" (1/1) ... [2019-09-09 23:21:12,887 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 23:21:13,159 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 23:21:15,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 23:21:15,385 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 23:21:16,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 23:21:16,540 INFO L192 MainTranslator]: Completed translation [2019-09-09 23:21:16,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:21:16 WrapperNode [2019-09-09 23:21:16,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 23:21:16,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 23:21:16,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 23:21:16,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 23:21:16,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:21:16" (1/1) ... [2019-09-09 23:21:16,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:21:16" (1/1) ... [2019-09-09 23:21:16,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:21:16" (1/1) ... [2019-09-09 23:21:16,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:21:16" (1/1) ... [2019-09-09 23:21:16,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:21:16" (1/1) ... [2019-09-09 23:21:16,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:21:16" (1/1) ... [2019-09-09 23:21:17,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:21:16" (1/1) ... [2019-09-09 23:21:17,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 23:21:17,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 23:21:17,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 23:21:17,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 23:21:17,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:21:16" (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 23:21:17,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 23:21:17,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 23:21:17,232 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 23:21:17,232 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 23:21:17,233 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-09 23:21:17,234 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-09 23:21:17,234 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-09 23:21:17,234 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-09 23:21:17,234 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 23:21:17,235 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 23:21:17,235 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 23:21:17,238 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-09 23:21:17,239 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-09 23:21:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-09 23:21:17,240 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-09 23:21:17,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 23:21:17,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 23:21:17,242 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 23:21:17,242 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 23:21:17,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 23:21:17,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 23:21:28,540 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 23:21:28,543 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 23:21:28,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 11:21:28 BoogieIcfgContainer [2019-09-09 23:21:28,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 23:21:28,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 23:21:28,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 23:21:28,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 23:21:28,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 11:21:12" (1/3) ... [2019-09-09 23:21:28,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8b9753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 11:21:28, skipping insertion in model container [2019-09-09 23:21:28,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 11:21:16" (2/3) ... [2019-09-09 23:21:28,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8b9753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 11:21:28, skipping insertion in model container [2019-09-09 23:21:28,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 11:21:28" (3/3) ... [2019-09-09 23:21:28,562 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label31.c [2019-09-09 23:21:28,574 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 23:21:28,589 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 23:21:28,608 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 23:21:28,636 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 23:21:28,636 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 23:21:28,636 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 23:21:28,636 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 23:21:28,637 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 23:21:28,637 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 23:21:28,637 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 23:21:28,637 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 23:21:28,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-09 23:21:28,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-09 23:21:28,712 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:21:28,713 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] [2019-09-09 23:21:28,715 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:21:28,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:21:28,721 INFO L82 PathProgramCache]: Analyzing trace with hash 756095498, now seen corresponding path program 1 times [2019-09-09 23:21:28,724 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:21:28,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:21:28,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:21:28,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:21:28,783 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:21:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:21:29,096 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 23:21:29,103 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:21:29,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 23:21:29,104 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:21:29,110 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 23:21:29,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 23:21:29,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 23:21:29,129 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2019-09-09 23:21:46,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:21:46,853 INFO L93 Difference]: Finished difference Result 4735 states and 7420 transitions. [2019-09-09 23:21:46,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 23:21:46,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2019-09-09 23:21:46,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:21:46,908 INFO L225 Difference]: With dead ends: 4735 [2019-09-09 23:21:46,908 INFO L226 Difference]: Without dead ends: 4647 [2019-09-09 23:21:46,910 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 23:21:46,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4647 states. [2019-09-09 23:21:47,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4647 to 4608. [2019-09-09 23:21:47,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4608 states. [2019-09-09 23:21:47,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4608 states to 4608 states and 7227 transitions. [2019-09-09 23:21:47,139 INFO L78 Accepts]: Start accepts. Automaton has 4608 states and 7227 transitions. Word has length 24 [2019-09-09 23:21:47,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:21:47,139 INFO L475 AbstractCegarLoop]: Abstraction has 4608 states and 7227 transitions. [2019-09-09 23:21:47,139 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 23:21:47,140 INFO L276 IsEmpty]: Start isEmpty. Operand 4608 states and 7227 transitions. [2019-09-09 23:21:47,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-09-09 23:21:47,144 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:21:47,145 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 23:21:47,145 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:21:47,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:21:47,146 INFO L82 PathProgramCache]: Analyzing trace with hash -2080715337, now seen corresponding path program 1 times [2019-09-09 23:21:47,146 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:21:47,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:21:47,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:21:47,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:21:47,147 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:21:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:21:47,335 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:21:47,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:21:47,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 23:21:47,336 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:21:47,338 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 23:21:47,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 23:21:47,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 23:21:47,339 INFO L87 Difference]: Start difference. First operand 4608 states and 7227 transitions. Second operand 6 states. [2019-09-09 23:22:02,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:22:02,760 INFO L93 Difference]: Finished difference Result 9029 states and 13933 transitions. [2019-09-09 23:22:02,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 23:22:02,761 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2019-09-09 23:22:02,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:22:02,809 INFO L225 Difference]: With dead ends: 9029 [2019-09-09 23:22:02,809 INFO L226 Difference]: Without dead ends: 9029 [2019-09-09 23:22:02,810 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 23:22:02,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9029 states. [2019-09-09 23:22:03,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9029 to 8961. [2019-09-09 23:22:03,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8961 states. [2019-09-09 23:22:03,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8961 states to 8961 states and 13764 transitions. [2019-09-09 23:22:03,038 INFO L78 Accepts]: Start accepts. Automaton has 8961 states and 13764 transitions. Word has length 95 [2019-09-09 23:22:03,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:22:03,040 INFO L475 AbstractCegarLoop]: Abstraction has 8961 states and 13764 transitions. [2019-09-09 23:22:03,040 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 23:22:03,041 INFO L276 IsEmpty]: Start isEmpty. Operand 8961 states and 13764 transitions. [2019-09-09 23:22:03,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-09-09 23:22:03,048 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:22:03,049 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 23:22:03,050 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:22:03,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:22:03,050 INFO L82 PathProgramCache]: Analyzing trace with hash 524305038, now seen corresponding path program 1 times [2019-09-09 23:22:03,051 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:22:03,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:22:03,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:22:03,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:22:03,052 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:22:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:22:03,266 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:22:03,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:22:03,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 23:22:03,267 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:22:03,268 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 23:22:03,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 23:22:03,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 23:22:03,268 INFO L87 Difference]: Start difference. First operand 8961 states and 13764 transitions. Second operand 6 states. [2019-09-09 23:22:18,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:22:18,056 INFO L93 Difference]: Finished difference Result 18033 states and 28503 transitions. [2019-09-09 23:22:18,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 23:22:18,064 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2019-09-09 23:22:18,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:22:18,157 INFO L225 Difference]: With dead ends: 18033 [2019-09-09 23:22:18,158 INFO L226 Difference]: Without dead ends: 18033 [2019-09-09 23:22:18,158 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 23:22:18,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18033 states. [2019-09-09 23:22:18,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18033 to 17865. [2019-09-09 23:22:18,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17865 states. [2019-09-09 23:22:18,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17865 states to 17865 states and 27911 transitions. [2019-09-09 23:22:18,653 INFO L78 Accepts]: Start accepts. Automaton has 17865 states and 27911 transitions. Word has length 97 [2019-09-09 23:22:18,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:22:18,658 INFO L475 AbstractCegarLoop]: Abstraction has 17865 states and 27911 transitions. [2019-09-09 23:22:18,658 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 23:22:18,658 INFO L276 IsEmpty]: Start isEmpty. Operand 17865 states and 27911 transitions. [2019-09-09 23:22:18,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-09-09 23:22:18,663 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:22:18,663 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 23:22:18,664 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:22:18,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:22:18,664 INFO L82 PathProgramCache]: Analyzing trace with hash 939261749, now seen corresponding path program 1 times [2019-09-09 23:22:18,664 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:22:18,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:22:18,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:22:18,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:22:18,666 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:22:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:22:18,880 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:22:18,880 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:22:18,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 23:22:18,881 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:22:18,882 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 23:22:18,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 23:22:18,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-09 23:22:18,884 INFO L87 Difference]: Start difference. First operand 17865 states and 27911 transitions. Second operand 6 states. [2019-09-09 23:22:36,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:22:36,332 INFO L93 Difference]: Finished difference Result 36459 states and 57704 transitions. [2019-09-09 23:22:36,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-09 23:22:36,332 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2019-09-09 23:22:36,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:22:36,486 INFO L225 Difference]: With dead ends: 36459 [2019-09-09 23:22:36,486 INFO L226 Difference]: Without dead ends: 36459 [2019-09-09 23:22:36,487 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-09-09 23:22:36,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36459 states. [2019-09-09 23:22:37,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36459 to 36139. [2019-09-09 23:22:37,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36139 states. [2019-09-09 23:22:37,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36139 states to 36139 states and 56221 transitions. [2019-09-09 23:22:37,490 INFO L78 Accepts]: Start accepts. Automaton has 36139 states and 56221 transitions. Word has length 105 [2019-09-09 23:22:37,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:22:37,490 INFO L475 AbstractCegarLoop]: Abstraction has 36139 states and 56221 transitions. [2019-09-09 23:22:37,490 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 23:22:37,491 INFO L276 IsEmpty]: Start isEmpty. Operand 36139 states and 56221 transitions. [2019-09-09 23:22:37,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-09-09 23:22:37,498 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:22:37,498 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 23:22:37,498 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:22:37,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:22:37,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1024558239, now seen corresponding path program 1 times [2019-09-09 23:22:37,500 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:22:37,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:22:37,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:22:37,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:22:37,503 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:22:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:22:37,636 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:22:37,637 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:22:37,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 23:22:37,637 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:22:37,638 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 23:22:37,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 23:22:37,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 23:22:37,639 INFO L87 Difference]: Start difference. First operand 36139 states and 56221 transitions. Second operand 5 states. [2019-09-09 23:22:55,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:22:55,289 INFO L93 Difference]: Finished difference Result 72026 states and 104994 transitions. [2019-09-09 23:22:55,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-09 23:22:55,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2019-09-09 23:22:55,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:22:55,546 INFO L225 Difference]: With dead ends: 72026 [2019-09-09 23:22:55,546 INFO L226 Difference]: Without dead ends: 72026 [2019-09-09 23:22:55,547 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-09 23:22:55,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72026 states. [2019-09-09 23:22:56,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72026 to 66889. [2019-09-09 23:22:56,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66889 states. [2019-09-09 23:22:56,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66889 states to 66889 states and 97062 transitions. [2019-09-09 23:22:56,970 INFO L78 Accepts]: Start accepts. Automaton has 66889 states and 97062 transitions. Word has length 125 [2019-09-09 23:22:56,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:22:56,972 INFO L475 AbstractCegarLoop]: Abstraction has 66889 states and 97062 transitions. [2019-09-09 23:22:56,972 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 23:22:56,972 INFO L276 IsEmpty]: Start isEmpty. Operand 66889 states and 97062 transitions. [2019-09-09 23:22:56,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-09-09 23:22:56,974 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:22:56,975 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:22:56,975 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:22:56,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:22:56,975 INFO L82 PathProgramCache]: Analyzing trace with hash -307893222, now seen corresponding path program 1 times [2019-09-09 23:22:56,976 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:22:56,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:22:56,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:22:56,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:22:56,977 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:22:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:22:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:22:58,960 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:22:58,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 23:22:58,960 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:22:58,961 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 23:22:58,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 23:22:58,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 23:22:58,961 INFO L87 Difference]: Start difference. First operand 66889 states and 97062 transitions. Second operand 6 states. [2019-09-09 23:23:15,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:23:15,577 INFO L93 Difference]: Finished difference Result 99769 states and 146000 transitions. [2019-09-09 23:23:15,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 23:23:15,578 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 188 [2019-09-09 23:23:15,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:23:15,928 INFO L225 Difference]: With dead ends: 99769 [2019-09-09 23:23:15,929 INFO L226 Difference]: Without dead ends: 99769 [2019-09-09 23:23:15,931 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 23:23:16,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99769 states. [2019-09-09 23:23:17,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99769 to 97771. [2019-09-09 23:23:17,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97771 states. [2019-09-09 23:23:18,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97771 states to 97771 states and 138925 transitions. [2019-09-09 23:23:18,129 INFO L78 Accepts]: Start accepts. Automaton has 97771 states and 138925 transitions. Word has length 188 [2019-09-09 23:23:18,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:23:18,129 INFO L475 AbstractCegarLoop]: Abstraction has 97771 states and 138925 transitions. [2019-09-09 23:23:18,130 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 23:23:18,133 INFO L276 IsEmpty]: Start isEmpty. Operand 97771 states and 138925 transitions. [2019-09-09 23:23:18,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2019-09-09 23:23:18,152 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:23:18,153 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:23:18,156 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:23:18,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:23:18,158 INFO L82 PathProgramCache]: Analyzing trace with hash -2081854123, now seen corresponding path program 1 times [2019-09-09 23:23:18,158 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:23:18,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:23:18,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:23:18,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:23:18,160 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:23:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:23:19,314 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 23:23:19,314 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:23:19,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 23:23:19,315 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:23:19,316 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 23:23:19,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 23:23:19,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 23:23:19,317 INFO L87 Difference]: Start difference. First operand 97771 states and 138925 transitions. Second operand 4 states. [2019-09-09 23:23:39,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:23:39,713 INFO L93 Difference]: Finished difference Result 187491 states and 265811 transitions. [2019-09-09 23:23:39,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 23:23:39,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 617 [2019-09-09 23:23:39,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:23:43,004 INFO L225 Difference]: With dead ends: 187491 [2019-09-09 23:23:43,004 INFO L226 Difference]: Without dead ends: 187491 [2019-09-09 23:23:43,005 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 23:23:43,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187491 states. [2019-09-09 23:23:45,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187491 to 180323. [2019-09-09 23:23:45,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180323 states. [2019-09-09 23:23:46,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180323 states to 180323 states and 257883 transitions. [2019-09-09 23:23:46,179 INFO L78 Accepts]: Start accepts. Automaton has 180323 states and 257883 transitions. Word has length 617 [2019-09-09 23:23:46,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:23:46,181 INFO L475 AbstractCegarLoop]: Abstraction has 180323 states and 257883 transitions. [2019-09-09 23:23:46,181 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 23:23:46,181 INFO L276 IsEmpty]: Start isEmpty. Operand 180323 states and 257883 transitions. [2019-09-09 23:23:46,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2019-09-09 23:23:46,209 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:23:46,210 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:23:46,210 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:23:46,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:23:46,211 INFO L82 PathProgramCache]: Analyzing trace with hash 2057916753, now seen corresponding path program 1 times [2019-09-09 23:23:46,211 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:23:46,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:23:46,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:23:46,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:23:46,213 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:23:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:23:46,850 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2019-09-09 23:23:46,850 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 23:23:46,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 23:23:46,851 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:23:46,852 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 23:23:46,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 23:23:46,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 23:23:46,852 INFO L87 Difference]: Start difference. First operand 180323 states and 257883 transitions. Second operand 4 states. [2019-09-09 23:24:03,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 23:24:03,823 INFO L93 Difference]: Finished difference Result 246563 states and 323378 transitions. [2019-09-09 23:24:03,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 23:24:03,823 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 834 [2019-09-09 23:24:03,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 23:24:04,467 INFO L225 Difference]: With dead ends: 246563 [2019-09-09 23:24:04,467 INFO L226 Difference]: Without dead ends: 246563 [2019-09-09 23:24:04,467 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 23:24:04,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246563 states. [2019-09-09 23:24:11,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246563 to 232584. [2019-09-09 23:24:11,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232584 states. [2019-09-09 23:24:12,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232584 states to 232584 states and 308311 transitions. [2019-09-09 23:24:12,019 INFO L78 Accepts]: Start accepts. Automaton has 232584 states and 308311 transitions. Word has length 834 [2019-09-09 23:24:12,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 23:24:12,021 INFO L475 AbstractCegarLoop]: Abstraction has 232584 states and 308311 transitions. [2019-09-09 23:24:12,021 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 23:24:12,021 INFO L276 IsEmpty]: Start isEmpty. Operand 232584 states and 308311 transitions. [2019-09-09 23:24:12,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1360 [2019-09-09 23:24:12,180 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 23:24:12,181 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:24:12,181 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 23:24:12,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:24:12,183 INFO L82 PathProgramCache]: Analyzing trace with hash -287792388, now seen corresponding path program 1 times [2019-09-09 23:24:12,183 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 23:24:12,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:24:12,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 23:24:12,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 23:24:12,184 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 23:24:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 23:24:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1850 backedges. 509 proven. 301 refuted. 0 times theorem prover too weak. 1040 trivial. 0 not checked. [2019-09-09 23:24:15,674 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 23:24:15,674 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 23:24:15,676 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 1360 with the following transitions: [2019-09-09 23:24:15,679 INFO L207 CegarAbsIntRunner]: [0], [1], [4196], [4200], [4204], [4208], [4212], [4216], [4220], [4224], [4228], [4232], [4236], [4240], [4244], [4248], [4252], [4256], [4260], [4264], [4268], [4279], [4290], [4294], [4297], [4298], [4309], [4313], [4317], [4321], [4325], [4329], [4333], [4337], [4341], [4345], [4349], [4353], [4357], [4361], [4365], [4369], [4373], [4377], [4381], [4385], [4396], [4400], [4404], [4408], [4412], [4416], [4420], [4431], [4435], [4439], [4443], [4454], [4458], [4462], [4466], [4470], [4474], [4478], [4482], [4486], [4490], [4494], [4498], [4502], [4506], [4510], [4514], [4518], [4522], [4526], [4530], [4534], [4538], [4542], [4553], [4557], [4561], [4565], [4569], [4573], [4577], [4581], [4585], [4589], [4593], [4597], [4601], [4605], [4609], [4620], [4624], [4628], [4632], [4636], [4647], [4651], [4655], [4659], [4663], [4667], [4671], [4675], [4679], [4690], [4694], [4698], [4709], [4713], [4717], [4721], [4725], [4729], [4733], [4737], [4741], [4745], [4749], [4753], [4764], [4768], [4772], [4776], [4780], [4784], [4788], [4792], [4803], [4807], [4811], [4815], [4819], [4823], [4827], [4831], [4835], [4839], [4843], [4847], [4858], [4862], [4873], [4877], [4881], [4885], [4896], [4900], [4904], [4908], [4912], [4916], [4920], [4924], [4935], [4939], [4943], [4954], [4958], [4962], [4966], [4970], [4974], [4978], [4982], [4986], [4990], [4994], [4998], [5002], [5006], [5010], [5014], [5018], [5022], [5026], [5030], [5034], [5038], [5042], [5046], [5050], [5054], [5058], [5062], [5066], [5070], [5074], [5078], [5082], [5086], [5090], [5094], [5105], [5109], [5120], [5124], [5128], [5132], [5136], [5140], [5143], [5226], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5326], [5328], [5331], [5339], [5347], [5355], [5363], [5371], [5379], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5878], [5882], [5886], [5889], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6363], [6366], [6370], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6421], [6425], [6429], [6440], [6444], [6455], [6459], [6463], [6467], [6470], [6471], [6475], [6486], [6490], [6494], [6498], [6502], [6506], [6510], [6514], [6525], [6529], [6533], [6537], [6541], [6545], [6549], [6553], [6557], [6561], [6565], [6569], [6573], [6577], [6581], [6585], [6589], [6593], [6604], [6608], [6619], [6623], [6634], [6645], [6649], [6653], [6657], [6661], [6665], [6669], [6673], [6677], [6681], [6685], [6689], [6693], [6697], [6701], [6712], [6716], [6727], [6731], [6735], [6739], [6743], [6747], [6751], [6755], [6759], [6763], [6767], [6771], [6775], [6779], [6783], [6787], [6791], [6795], [6799], [6801], [6802], [6806], [6815], [6819], [6821], [6834], [6835], [6836], [6837], [6838], [6840], [6841] [2019-09-09 23:24:15,778 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 23:24:15,779 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 23:25:42,864 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-09 23:27:14,524 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 23:27:14,527 INFO L272 AbstractInterpreter]: Visited 506 different actions 1007 times. Merged at 4 different actions 5 times. Never widened. Performed 2184 root evaluator evaluations with a maximum evaluation depth of 17. Performed 2184 inverse root evaluator evaluations with a maximum inverse evaluation depth of 17. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2019-09-09 23:27:14,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 23:27:14,532 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 23:29:38,570 INFO L227 lantSequenceWeakener]: Weakened 1354 states. On average, predicates are now at 75.02% of their original sizes. [2019-09-09 23:29:38,571 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 23:29:38,763 INFO L420 sIntCurrentIteration]: We unified 1358 AI predicates to 1358 [2019-09-09 23:29:38,763 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 23:29:38,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 23:29:38,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 18 [2019-09-09 23:29:38,765 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 23:29:38,768 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-09 23:29:38,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-09 23:29:38,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2019-09-09 23:29:38,768 INFO L87 Difference]: Start difference. First operand 232584 states and 308311 transitions. Second operand 14 states.