java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 18:55:14,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 18:55:14,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 18:55:14,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 18:55:14,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 18:55:14,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 18:55:14,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 18:55:14,431 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 18:55:14,451 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 18:55:14,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 18:55:14,452 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 18:55:14,452 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 18:55:14,454 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 18:55:14,454 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 18:55:14,454 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 18:55:14,454 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 18:55:14,454 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 18:55:14,455 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 18:55:14,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 18:55:14,456 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 18:55:14,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 18:55:14,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 18:55:14,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 18:55:14,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 18:55:14,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 18:55:14,458 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 18:55:14,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 18:55:14,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 18:55:14,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 18:55:14,459 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 18:55:14,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 18:55:14,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 18:55:14,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 18:55:14,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 18:55:14,460 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 18:55:14,460 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 18:55:14,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 18:55:14,460 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 18:55:14,512 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 18:55:14,524 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 18:55:14,527 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 18:55:14,529 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 18:55:14,529 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 18:55:14,530 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label10.c [2019-09-09 18:55:14,604 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94afa62b3/c3809623f785405e96291fe7cbb5bd50/FLAGfd477a57f [2019-09-09 18:55:15,329 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 18:55:15,330 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label10.c [2019-09-09 18:55:15,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94afa62b3/c3809623f785405e96291fe7cbb5bd50/FLAGfd477a57f [2019-09-09 18:55:15,474 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94afa62b3/c3809623f785405e96291fe7cbb5bd50 [2019-09-09 18:55:15,484 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 18:55:15,485 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 18:55:15,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 18:55:15,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 18:55:15,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 18:55:15,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 06:55:15" (1/1) ... [2019-09-09 18:55:15,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f89b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:55:15, skipping insertion in model container [2019-09-09 18:55:15,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 06:55:15" (1/1) ... [2019-09-09 18:55:15,504 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 18:55:15,585 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 18:55:16,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 18:55:16,650 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 18:55:16,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 18:55:16,970 INFO L192 MainTranslator]: Completed translation [2019-09-09 18:55:16,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:55:16 WrapperNode [2019-09-09 18:55:16,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 18:55:16,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 18:55:16,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 18:55:16,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 18:55:16,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:55:16" (1/1) ... [2019-09-09 18:55:16,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:55:16" (1/1) ... [2019-09-09 18:55:17,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:55:16" (1/1) ... [2019-09-09 18:55:17,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:55:16" (1/1) ... [2019-09-09 18:55:17,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:55:16" (1/1) ... [2019-09-09 18:55:17,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:55:16" (1/1) ... [2019-09-09 18:55:17,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:55:16" (1/1) ... [2019-09-09 18:55:17,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 18:55:17,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 18:55:17,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 18:55:17,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 18:55:17,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:55:16" (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 18:55:17,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 18:55:17,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 18:55:17,266 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 18:55:17,267 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 18:55:17,267 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 18:55:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 18:55:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 18:55:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 18:55:17,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 18:55:17,268 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 18:55:17,268 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 18:55:17,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 18:55:17,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 18:55:21,007 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 18:55:21,007 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 18:55:21,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 06:55:21 BoogieIcfgContainer [2019-09-09 18:55:21,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 18:55:21,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 18:55:21,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 18:55:21,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 18:55:21,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 06:55:15" (1/3) ... [2019-09-09 18:55:21,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd2f385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 06:55:21, skipping insertion in model container [2019-09-09 18:55:21,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:55:16" (2/3) ... [2019-09-09 18:55:21,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd2f385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 06:55:21, skipping insertion in model container [2019-09-09 18:55:21,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 06:55:21" (3/3) ... [2019-09-09 18:55:21,018 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label10.c [2019-09-09 18:55:21,029 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 18:55:21,039 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 18:55:21,057 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 18:55:21,087 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 18:55:21,087 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 18:55:21,087 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 18:55:21,087 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 18:55:21,088 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 18:55:21,088 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 18:55:21,088 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 18:55:21,088 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 18:55:21,119 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2019-09-09 18:55:21,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-09-09 18:55:21,132 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 18:55:21,134 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 18:55:21,136 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 18:55:21,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 18:55:21,143 INFO L82 PathProgramCache]: Analyzing trace with hash 92280264, now seen corresponding path program 1 times [2019-09-09 18:55:21,146 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 18:55:21,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:55:21,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 18:55:21,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:55:21,260 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 18:55:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 18:55:21,508 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 18:55:21,510 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 18:55:21,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 18:55:21,511 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 18:55:21,517 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 18:55:21,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 18:55:21,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 18:55:21,536 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2019-09-09 18:55:27,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 18:55:27,200 INFO L93 Difference]: Finished difference Result 1123 states and 1832 transitions. [2019-09-09 18:55:27,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 18:55:27,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2019-09-09 18:55:27,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 18:55:27,234 INFO L225 Difference]: With dead ends: 1123 [2019-09-09 18:55:27,235 INFO L226 Difference]: Without dead ends: 1036 [2019-09-09 18:55:27,236 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 18:55:27,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2019-09-09 18:55:27,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 1013. [2019-09-09 18:55:27,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2019-09-09 18:55:27,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1638 transitions. [2019-09-09 18:55:27,354 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1638 transitions. Word has length 40 [2019-09-09 18:55:27,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 18:55:27,355 INFO L475 AbstractCegarLoop]: Abstraction has 1013 states and 1638 transitions. [2019-09-09 18:55:27,355 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 18:55:27,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1638 transitions. [2019-09-09 18:55:27,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-09 18:55:27,361 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 18:55:27,361 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:55:27,362 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 18:55:27,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 18:55:27,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1848881283, now seen corresponding path program 1 times [2019-09-09 18:55:27,362 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 18:55:27,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:55:27,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 18:55:27,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:55:27,364 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 18:55:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 18:55:27,609 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 18:55:27,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 18:55:27,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 18:55:27,610 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 18:55:27,612 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 18:55:27,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 18:55:27,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 18:55:27,613 INFO L87 Difference]: Start difference. First operand 1013 states and 1638 transitions. Second operand 5 states. [2019-09-09 18:55:31,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 18:55:31,426 INFO L93 Difference]: Finished difference Result 1996 states and 2816 transitions. [2019-09-09 18:55:31,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-09 18:55:31,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2019-09-09 18:55:31,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 18:55:31,442 INFO L225 Difference]: With dead ends: 1996 [2019-09-09 18:55:31,442 INFO L226 Difference]: Without dead ends: 1996 [2019-09-09 18:55:31,443 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 18:55:31,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1996 states. [2019-09-09 18:55:31,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1996 to 1958. [2019-09-09 18:55:31,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1958 states. [2019-09-09 18:55:31,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1958 states to 1958 states and 2746 transitions. [2019-09-09 18:55:31,553 INFO L78 Accepts]: Start accepts. Automaton has 1958 states and 2746 transitions. Word has length 112 [2019-09-09 18:55:31,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 18:55:31,554 INFO L475 AbstractCegarLoop]: Abstraction has 1958 states and 2746 transitions. [2019-09-09 18:55:31,554 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 18:55:31,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1958 states and 2746 transitions. [2019-09-09 18:55:31,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-09-09 18:55:31,560 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 18:55:31,560 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:55:31,561 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 18:55:31,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 18:55:31,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1574643571, now seen corresponding path program 1 times [2019-09-09 18:55:31,562 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 18:55:31,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:55:31,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 18:55:31,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:55:31,564 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 18:55:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 18:55:31,719 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 18:55:31,719 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 18:55:31,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 18:55:31,720 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 18:55:31,720 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 18:55:31,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 18:55:31,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 18:55:31,721 INFO L87 Difference]: Start difference. First operand 1958 states and 2746 transitions. Second operand 4 states. [2019-09-09 18:55:36,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 18:55:36,512 INFO L93 Difference]: Finished difference Result 5682 states and 7496 transitions. [2019-09-09 18:55:36,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 18:55:36,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-09-09 18:55:36,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 18:55:36,555 INFO L225 Difference]: With dead ends: 5682 [2019-09-09 18:55:36,556 INFO L226 Difference]: Without dead ends: 5682 [2019-09-09 18:55:36,560 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 18:55:36,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5682 states. [2019-09-09 18:55:36,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5682 to 5679. [2019-09-09 18:55:36,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5679 states. [2019-09-09 18:55:36,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5679 states to 5679 states and 7490 transitions. [2019-09-09 18:55:36,738 INFO L78 Accepts]: Start accepts. Automaton has 5679 states and 7490 transitions. Word has length 120 [2019-09-09 18:55:36,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 18:55:36,740 INFO L475 AbstractCegarLoop]: Abstraction has 5679 states and 7490 transitions. [2019-09-09 18:55:36,741 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 18:55:36,741 INFO L276 IsEmpty]: Start isEmpty. Operand 5679 states and 7490 transitions. [2019-09-09 18:55:36,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-09-09 18:55:36,756 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 18:55:36,756 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:55:36,758 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 18:55:36,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 18:55:36,759 INFO L82 PathProgramCache]: Analyzing trace with hash 329094787, now seen corresponding path program 1 times [2019-09-09 18:55:36,759 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 18:55:36,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:55:36,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 18:55:36,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:55:36,761 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 18:55:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 18:55:36,979 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 18:55:36,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 18:55:36,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 18:55:36,980 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 18:55:36,980 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 18:55:36,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 18:55:36,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 18:55:36,981 INFO L87 Difference]: Start difference. First operand 5679 states and 7490 transitions. Second operand 4 states. [2019-09-09 18:55:41,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 18:55:41,514 INFO L93 Difference]: Finished difference Result 11287 states and 15570 transitions. [2019-09-09 18:55:41,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 18:55:41,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2019-09-09 18:55:41,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 18:55:41,597 INFO L225 Difference]: With dead ends: 11287 [2019-09-09 18:55:41,598 INFO L226 Difference]: Without dead ends: 11287 [2019-09-09 18:55:41,598 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 18:55:41,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11287 states. [2019-09-09 18:55:41,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11287 to 11283. [2019-09-09 18:55:41,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11283 states. [2019-09-09 18:55:41,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11283 states to 11283 states and 15563 transitions. [2019-09-09 18:55:41,891 INFO L78 Accepts]: Start accepts. Automaton has 11283 states and 15563 transitions. Word has length 151 [2019-09-09 18:55:41,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 18:55:41,893 INFO L475 AbstractCegarLoop]: Abstraction has 11283 states and 15563 transitions. [2019-09-09 18:55:41,893 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 18:55:41,893 INFO L276 IsEmpty]: Start isEmpty. Operand 11283 states and 15563 transitions. [2019-09-09 18:55:41,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-09-09 18:55:41,899 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 18:55:41,900 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-09 18:55:41,901 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 18:55:41,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 18:55:41,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1065927386, now seen corresponding path program 1 times [2019-09-09 18:55:41,901 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 18:55:41,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:55:41,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 18:55:41,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:55:41,903 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 18:55:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 18:55:42,091 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-09-09 18:55:42,092 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 18:55:42,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 18:55:42,092 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 18:55:42,093 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 18:55:42,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 18:55:42,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 18:55:42,095 INFO L87 Difference]: Start difference. First operand 11283 states and 15563 transitions. Second operand 3 states. [2019-09-09 18:55:44,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 18:55:44,821 INFO L93 Difference]: Finished difference Result 20833 states and 28606 transitions. [2019-09-09 18:55:44,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 18:55:44,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2019-09-09 18:55:44,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 18:55:44,928 INFO L225 Difference]: With dead ends: 20833 [2019-09-09 18:55:44,929 INFO L226 Difference]: Without dead ends: 20833 [2019-09-09 18:55:44,929 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 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 18:55:44,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20833 states. [2019-09-09 18:55:45,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20833 to 19605. [2019-09-09 18:55:45,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19605 states. [2019-09-09 18:55:45,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19605 states to 19605 states and 27276 transitions. [2019-09-09 18:55:45,450 INFO L78 Accepts]: Start accepts. Automaton has 19605 states and 27276 transitions. Word has length 196 [2019-09-09 18:55:45,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 18:55:45,451 INFO L475 AbstractCegarLoop]: Abstraction has 19605 states and 27276 transitions. [2019-09-09 18:55:45,451 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 18:55:45,451 INFO L276 IsEmpty]: Start isEmpty. Operand 19605 states and 27276 transitions. [2019-09-09 18:55:45,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2019-09-09 18:55:45,506 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 18:55:45,507 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:55:45,507 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 18:55:45,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 18:55:45,508 INFO L82 PathProgramCache]: Analyzing trace with hash -2125732671, now seen corresponding path program 1 times [2019-09-09 18:55:45,508 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 18:55:45,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:55:45,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 18:55:45,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 18:55:45,512 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 18:55:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 18:55:46,032 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 66 proven. 80 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-09 18:55:46,033 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 18:55:46,033 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 18:55:46,035 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 427 with the following transitions: [2019-09-09 18:55:46,040 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [29], [33], [36], [73], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1581], [1585], [1589], [1593], [1597], [1601], [1612], [1616], [1620], [1624], [1628], [1632], [1634], [1635], [1639], [1648], [1652], [1654], [1659], [1660], [1661], [1662], [1663], [1665], [1666] [2019-09-09 18:55:46,132 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 18:55:46,133 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 18:56:01,199 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 18:56:01,201 INFO L272 AbstractInterpreter]: Visited 302 different actions 302 times. Never merged. Never widened. Performed 593 root evaluator evaluations with a maximum evaluation depth of 14. Performed 593 inverse root evaluator evaluations with a maximum inverse evaluation depth of 14. Never found a fixpoint. Largest state had 24 variables. [2019-09-09 18:56:01,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 18:56:01,206 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 18:56:12,420 INFO L227 lantSequenceWeakener]: Weakened 402 states. On average, predicates are now at 77.59% of their original sizes. [2019-09-09 18:56:12,420 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 18:56:12,658 INFO L420 sIntCurrentIteration]: We unified 425 AI predicates to 425 [2019-09-09 18:56:12,659 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 18:56:12,659 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 18:56:12,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2019-09-09 18:56:12,660 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 18:56:12,661 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-09 18:56:12,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-09 18:56:12,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2019-09-09 18:56:12,663 INFO L87 Difference]: Start difference. First operand 19605 states and 27276 transitions. Second operand 17 states. [2019-09-09 18:56:26,294 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-09 19:02:59,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 19:02:59,681 INFO L93 Difference]: Finished difference Result 19916 states and 27600 transitions. [2019-09-09 19:02:59,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-09 19:02:59,681 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 426 [2019-09-09 19:02:59,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 19:02:59,754 INFO L225 Difference]: With dead ends: 19916 [2019-09-09 19:02:59,754 INFO L226 Difference]: Without dead ends: 19916 [2019-09-09 19:02:59,755 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=577, Unknown=0, NotChecked=0, Total=756 [2019-09-09 19:02:59,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19916 states. [2019-09-09 19:03:00,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19916 to 19912. [2019-09-09 19:03:00,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19912 states. [2019-09-09 19:03:00,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19912 states to 19912 states and 27592 transitions. [2019-09-09 19:03:00,182 INFO L78 Accepts]: Start accepts. Automaton has 19912 states and 27592 transitions. Word has length 426 [2019-09-09 19:03:00,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 19:03:00,183 INFO L475 AbstractCegarLoop]: Abstraction has 19912 states and 27592 transitions. [2019-09-09 19:03:00,183 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-09 19:03:00,183 INFO L276 IsEmpty]: Start isEmpty. Operand 19912 states and 27592 transitions. [2019-09-09 19:03:00,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2019-09-09 19:03:00,229 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 19:03:00,231 INFO L399 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:03:00,231 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 19:03:00,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 19:03:00,232 INFO L82 PathProgramCache]: Analyzing trace with hash 699957411, now seen corresponding path program 1 times [2019-09-09 19:03:00,232 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 19:03:00,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 19:03:00,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 19:03:00,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 19:03:00,234 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 19:03:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 19:03:00,798 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 104 proven. 242 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-09-09 19:03:00,799 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 19:03:00,799 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 19:03:00,800 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 522 with the following transitions: [2019-09-09 19:03:00,801 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [29], [33], [36], [73], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1581], [1585], [1589], [1593], [1597], [1601], [1612], [1616], [1620], [1624], [1628], [1632], [1634], [1635], [1639], [1648], [1652], [1654], [1659], [1660], [1661], [1662], [1663], [1665], [1666] [2019-09-09 19:03:00,821 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 19:03:00,821 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 19:03:02,717 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-09 19:03:22,065 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 19:03:22,067 INFO L272 AbstractInterpreter]: Visited 306 different actions 607 times. Merged at 4 different actions 5 times. Never widened. Performed 1022 root evaluator evaluations with a maximum evaluation depth of 14. Performed 1022 inverse root evaluator evaluations with a maximum inverse evaluation depth of 14. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2019-09-09 19:03:22,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 19:03:22,067 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 19:03:28,334 INFO L227 lantSequenceWeakener]: Weakened 513 states. On average, predicates are now at 77.48% of their original sizes. [2019-09-09 19:03:28,335 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 19:03:28,538 INFO L420 sIntCurrentIteration]: We unified 520 AI predicates to 520 [2019-09-09 19:03:28,539 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 19:03:28,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 19:03:28,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2019-09-09 19:03:28,539 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 19:03:28,540 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-09 19:03:28,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-09 19:03:28,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2019-09-09 19:03:28,541 INFO L87 Difference]: Start difference. First operand 19912 states and 27592 transitions. Second operand 18 states. [2019-09-09 19:08:29,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 19:08:29,656 INFO L93 Difference]: Finished difference Result 20257 states and 27952 transitions. [2019-09-09 19:08:29,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-09-09 19:08:29,656 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 521 [2019-09-09 19:08:29,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 19:08:29,741 INFO L225 Difference]: With dead ends: 20257 [2019-09-09 19:08:29,741 INFO L226 Difference]: Without dead ends: 20257 [2019-09-09 19:08:29,742 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=203, Invalid=727, Unknown=0, NotChecked=0, Total=930 [2019-09-09 19:08:29,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20257 states. [2019-09-09 19:08:30,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20257 to 19912. [2019-09-09 19:08:30,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19912 states. [2019-09-09 19:08:30,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19912 states to 19912 states and 27592 transitions. [2019-09-09 19:08:30,247 INFO L78 Accepts]: Start accepts. Automaton has 19912 states and 27592 transitions. Word has length 521 [2019-09-09 19:08:30,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 19:08:30,248 INFO L475 AbstractCegarLoop]: Abstraction has 19912 states and 27592 transitions. [2019-09-09 19:08:30,248 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-09-09 19:08:30,248 INFO L276 IsEmpty]: Start isEmpty. Operand 19912 states and 27592 transitions. [2019-09-09 19:08:30,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2019-09-09 19:08:30,299 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 19:08:30,300 INFO L399 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:08:30,300 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 19:08:30,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 19:08:30,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1742926860, now seen corresponding path program 1 times [2019-09-09 19:08:30,301 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 19:08:30,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 19:08:30,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 19:08:30,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 19:08:30,303 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 19:08:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 19:08:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 104 proven. 327 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-09-09 19:08:31,189 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 19:08:31,189 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 19:08:31,190 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 607 with the following transitions: [2019-09-09 19:08:31,191 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [29], [33], [36], [73], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1115], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1581], [1585], [1589], [1593], [1597], [1601], [1612], [1616], [1620], [1624], [1628], [1632], [1634], [1635], [1639], [1648], [1652], [1654], [1659], [1660], [1661], [1662], [1663], [1665], [1666] [2019-09-09 19:08:31,197 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 19:08:31,198 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 19:08:38,716 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-09 19:08:51,744 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 19:08:51,745 INFO L272 AbstractInterpreter]: Visited 306 different actions 607 times. Merged at 4 different actions 5 times. Never widened. Performed 1010 root evaluator evaluations with a maximum evaluation depth of 14. Performed 1010 inverse root evaluator evaluations with a maximum inverse evaluation depth of 14. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2019-09-09 19:08:51,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 19:08:51,745 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 19:08:59,668 INFO L227 lantSequenceWeakener]: Weakened 598 states. On average, predicates are now at 77.45% of their original sizes. [2019-09-09 19:08:59,669 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 19:08:59,940 INFO L420 sIntCurrentIteration]: We unified 605 AI predicates to 605 [2019-09-09 19:08:59,941 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 19:08:59,941 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 19:08:59,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2019-09-09 19:08:59,941 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 19:08:59,942 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-09 19:08:59,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-09 19:08:59,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2019-09-09 19:08:59,943 INFO L87 Difference]: Start difference. First operand 19912 states and 27592 transitions. Second operand 18 states.