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/Problem01_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 17:00:11,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 17:00:11,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 17:00:11,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 17:00:11,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 17:00:11,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 17:00:11,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 17:00:11,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 17:00:11,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 17:00:11,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 17:00:11,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 17:00:11,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 17:00:11,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 17:00:11,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 17:00:11,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 17:00:11,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 17:00:11,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 17:00:11,271 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-10-02 17:00:11,286 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 17:00:11,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 17:00:11,286 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 17:00:11,286 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 17:00:11,287 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 17:00:11,287 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 17:00:11,287 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 17:00:11,288 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 17:00:11,288 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 17:00:11,288 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 17:00:11,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 17:00:11,291 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 17:00:11,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 17:00:11,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 17:00:11,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 17:00:11,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 17:00:11,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 17:00:11,293 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 17:00:11,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 17:00:11,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 17:00:11,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 17:00:11,293 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 17:00:11,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 17:00:11,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 17:00:11,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 17:00:11,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 17:00:11,295 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 17:00:11,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 17:00:11,296 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 17:00:11,296 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 17:00:11,346 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 17:00:11,358 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 17:00:11,361 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 17:00:11,363 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 17:00:11,363 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 17:00:11,364 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2019-10-02 17:00:11,425 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/670c3c3ab/d4a5263711ca4dfc939d3ea7bcf5d022/FLAG66265ad53 [2019-10-02 17:00:12,004 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 17:00:12,007 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2019-10-02 17:00:12,029 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/670c3c3ab/d4a5263711ca4dfc939d3ea7bcf5d022/FLAG66265ad53 [2019-10-02 17:00:12,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/670c3c3ab/d4a5263711ca4dfc939d3ea7bcf5d022 [2019-10-02 17:00:12,266 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 17:00:12,268 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 17:00:12,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 17:00:12,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 17:00:12,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 17:00:12,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 05:00:12" (1/1) ... [2019-10-02 17:00:12,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e1c27c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:00:12, skipping insertion in model container [2019-10-02 17:00:12,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 05:00:12" (1/1) ... [2019-10-02 17:00:12,287 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 17:00:12,348 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 17:00:12,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 17:00:13,011 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 17:00:13,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 17:00:13,138 INFO L192 MainTranslator]: Completed translation [2019-10-02 17:00:13,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:00:13 WrapperNode [2019-10-02 17:00:13,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 17:00:13,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 17:00:13,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 17:00:13,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 17:00:13,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:00:13" (1/1) ... [2019-10-02 17:00:13,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:00:13" (1/1) ... [2019-10-02 17:00:13,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:00:13" (1/1) ... [2019-10-02 17:00:13,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:00:13" (1/1) ... [2019-10-02 17:00:13,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:00:13" (1/1) ... [2019-10-02 17:00:13,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:00:13" (1/1) ... [2019-10-02 17:00:13,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:00:13" (1/1) ... [2019-10-02 17:00:13,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 17:00:13,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 17:00:13,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 17:00:13,253 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 17:00:13,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:00:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 17:00:13,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 17:00:13,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 17:00:13,326 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 17:00:13,326 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 17:00:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 17:00:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 17:00:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 17:00:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 17:00:13,327 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 17:00:13,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 17:00:13,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 17:00:14,663 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 17:00:14,664 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 17:00:14,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 05:00:14 BoogieIcfgContainer [2019-10-02 17:00:14,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 17:00:14,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 17:00:14,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 17:00:14,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 17:00:14,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 05:00:12" (1/3) ... [2019-10-02 17:00:14,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a20ea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 05:00:14, skipping insertion in model container [2019-10-02 17:00:14,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 05:00:13" (2/3) ... [2019-10-02 17:00:14,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14a20ea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 05:00:14, skipping insertion in model container [2019-10-02 17:00:14,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 05:00:14" (3/3) ... [2019-10-02 17:00:14,675 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label38.c [2019-10-02 17:00:14,686 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 17:00:14,696 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 17:00:14,715 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 17:00:14,746 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 17:00:14,746 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 17:00:14,746 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 17:00:14,746 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 17:00:14,747 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 17:00:14,747 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 17:00:14,747 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 17:00:14,747 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 17:00:14,770 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2019-10-02 17:00:14,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-02 17:00:14,784 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:00:14,785 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 17:00:14,787 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:00:14,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:00:14,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1861146994, now seen corresponding path program 1 times [2019-10-02 17:00:14,796 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:00:14,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:00:14,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:00:14,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:00:14,857 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:00:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:00:15,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 17:00:15,345 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 17:00:15,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 17:00:15,346 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 17:00:15,352 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 17:00:15,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 17:00:15,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 17:00:15,371 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2019-10-02 17:00:16,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 17:00:16,320 INFO L93 Difference]: Finished difference Result 346 states and 499 transitions. [2019-10-02 17:00:16,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 17:00:16,322 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2019-10-02 17:00:16,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 17:00:16,340 INFO L225 Difference]: With dead ends: 346 [2019-10-02 17:00:16,341 INFO L226 Difference]: Without dead ends: 278 [2019-10-02 17:00:16,343 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 17:00:16,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-10-02 17:00:16,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2019-10-02 17:00:16,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-10-02 17:00:16,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 394 transitions. [2019-10-02 17:00:16,452 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 394 transitions. Word has length 88 [2019-10-02 17:00:16,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 17:00:16,453 INFO L475 AbstractCegarLoop]: Abstraction has 278 states and 394 transitions. [2019-10-02 17:00:16,454 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 17:00:16,454 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 394 transitions. [2019-10-02 17:00:16,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-02 17:00:16,461 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:00:16,461 INFO L411 BasicCegarLoop]: trace histogram [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] [2019-10-02 17:00:16,461 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:00:16,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:00:16,462 INFO L82 PathProgramCache]: Analyzing trace with hash -136469723, now seen corresponding path program 1 times [2019-10-02 17:00:16,462 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:00:16,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:00:16,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:00:16,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:00:16,465 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:00:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:00:16,586 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 17:00:16,586 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 17:00:16,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 17:00:16,587 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 17:00:16,589 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 17:00:16,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 17:00:16,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 17:00:16,591 INFO L87 Difference]: Start difference. First operand 278 states and 394 transitions. Second operand 6 states. [2019-10-02 17:00:17,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 17:00:17,507 INFO L93 Difference]: Finished difference Result 568 states and 814 transitions. [2019-10-02 17:00:17,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 17:00:17,509 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-10-02 17:00:17,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 17:00:17,519 INFO L225 Difference]: With dead ends: 568 [2019-10-02 17:00:17,519 INFO L226 Difference]: Without dead ends: 568 [2019-10-02 17:00:17,523 INFO L640 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 [2019-10-02 17:00:17,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2019-10-02 17:00:17,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 556. [2019-10-02 17:00:17,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2019-10-02 17:00:17,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 785 transitions. [2019-10-02 17:00:17,584 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 785 transitions. Word has length 98 [2019-10-02 17:00:17,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 17:00:17,584 INFO L475 AbstractCegarLoop]: Abstraction has 556 states and 785 transitions. [2019-10-02 17:00:17,584 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 17:00:17,584 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 785 transitions. [2019-10-02 17:00:17,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-02 17:00:17,589 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:00:17,589 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 17:00:17,590 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:00:17,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:00:17,590 INFO L82 PathProgramCache]: Analyzing trace with hash -2049197465, now seen corresponding path program 1 times [2019-10-02 17:00:17,590 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:00:17,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:00:17,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:00:17,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:00:17,592 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:00:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:00:17,700 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 17:00:17,700 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 17:00:17,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 17:00:17,700 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 17:00:17,701 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 17:00:17,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 17:00:17,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 17:00:17,702 INFO L87 Difference]: Start difference. First operand 556 states and 785 transitions. Second operand 3 states. [2019-10-02 17:00:18,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 17:00:18,293 INFO L93 Difference]: Finished difference Result 963 states and 1271 transitions. [2019-10-02 17:00:18,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 17:00:18,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2019-10-02 17:00:18,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 17:00:18,301 INFO L225 Difference]: With dead ends: 963 [2019-10-02 17:00:18,302 INFO L226 Difference]: Without dead ends: 963 [2019-10-02 17:00:18,302 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 17:00:18,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2019-10-02 17:00:18,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2019-10-02 17:00:18,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2019-10-02 17:00:18,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1271 transitions. [2019-10-02 17:00:18,337 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1271 transitions. Word has length 99 [2019-10-02 17:00:18,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 17:00:18,337 INFO L475 AbstractCegarLoop]: Abstraction has 963 states and 1271 transitions. [2019-10-02 17:00:18,338 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 17:00:18,338 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1271 transitions. [2019-10-02 17:00:18,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-02 17:00:18,344 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:00:18,345 INFO L411 BasicCegarLoop]: trace histogram [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] [2019-10-02 17:00:18,345 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:00:18,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:00:18,345 INFO L82 PathProgramCache]: Analyzing trace with hash -836397599, now seen corresponding path program 1 times [2019-10-02 17:00:18,345 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:00:18,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:00:18,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:00:18,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:00:18,347 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:00:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:00:18,439 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 17:00:18,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 17:00:18,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 17:00:18,440 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 17:00:18,441 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 17:00:18,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 17:00:18,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 17:00:18,441 INFO L87 Difference]: Start difference. First operand 963 states and 1271 transitions. Second operand 3 states. [2019-10-02 17:00:19,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 17:00:19,005 INFO L93 Difference]: Finished difference Result 1505 states and 1971 transitions. [2019-10-02 17:00:19,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 17:00:19,006 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2019-10-02 17:00:19,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 17:00:19,017 INFO L225 Difference]: With dead ends: 1505 [2019-10-02 17:00:19,017 INFO L226 Difference]: Without dead ends: 1505 [2019-10-02 17:00:19,018 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 17:00:19,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2019-10-02 17:00:19,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1505. [2019-10-02 17:00:19,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1505 states. [2019-10-02 17:00:19,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 1971 transitions. [2019-10-02 17:00:19,066 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 1971 transitions. Word has length 100 [2019-10-02 17:00:19,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 17:00:19,067 INFO L475 AbstractCegarLoop]: Abstraction has 1505 states and 1971 transitions. [2019-10-02 17:00:19,067 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 17:00:19,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 1971 transitions. [2019-10-02 17:00:19,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-02 17:00:19,079 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:00:19,079 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 17:00:19,079 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:00:19,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:00:19,080 INFO L82 PathProgramCache]: Analyzing trace with hash -273287469, now seen corresponding path program 1 times [2019-10-02 17:00:19,080 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:00:19,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:00:19,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:00:19,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:00:19,083 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:00:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:00:19,437 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 17:00:19,438 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 17:00:19,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 17:00:19,438 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 17:00:19,438 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 17:00:19,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 17:00:19,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-02 17:00:19,439 INFO L87 Difference]: Start difference. First operand 1505 states and 1971 transitions. Second operand 6 states. [2019-10-02 17:00:20,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 17:00:20,390 INFO L93 Difference]: Finished difference Result 2091 states and 2726 transitions. [2019-10-02 17:00:20,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-02 17:00:20,391 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2019-10-02 17:00:20,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 17:00:20,405 INFO L225 Difference]: With dead ends: 2091 [2019-10-02 17:00:20,406 INFO L226 Difference]: Without dead ends: 1954 [2019-10-02 17:00:20,406 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-10-02 17:00:20,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2019-10-02 17:00:20,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1674. [2019-10-02 17:00:20,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1674 states. [2019-10-02 17:00:20,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2171 transitions. [2019-10-02 17:00:20,478 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2171 transitions. Word has length 141 [2019-10-02 17:00:20,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 17:00:20,478 INFO L475 AbstractCegarLoop]: Abstraction has 1674 states and 2171 transitions. [2019-10-02 17:00:20,478 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 17:00:20,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2171 transitions. [2019-10-02 17:00:20,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-02 17:00:20,485 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 17:00:20,485 INFO L411 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 17:00:20,486 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 17:00:20,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 17:00:20,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1345296538, now seen corresponding path program 1 times [2019-10-02 17:00:20,488 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 17:00:20,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:00:20,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 17:00:20,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 17:00:20,493 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 17:00:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 17:00:20,684 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 17:00:20,684 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 17:00:20,684 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 17:00:20,686 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 153 with the following transitions: [2019-10-02 17:00:20,689 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [17], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [185], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [349], [351], [757], [761], [770], [774], [776], [781], [782], [783], [785], [786] [2019-10-02 17:00:20,814 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 17:00:20,815 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)