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/Problem18_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 21:53:28,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 21:53:28,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 21:53:28,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 21:53:28,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 21:53:28,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 21:53:28,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 21:53:28,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 21:53:28,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 21:53:28,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 21:53:28,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 21:53:28,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 21:53:28,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 21:53:28,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 21:53:28,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 21:53:28,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 21:53:28,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 21:53:28,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 21:53:28,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 21:53:28,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 21:53:28,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 21:53:28,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 21:53:28,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 21:53:28,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 21:53:28,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 21:53:28,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 21:53:28,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 21:53:28,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 21:53:28,397 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 21:53:28,411 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 21:53:28,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 21:53:28,412 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 21:53:28,412 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 21:53:28,413 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 21:53:28,413 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 21:53:28,413 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 21:53:28,413 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 21:53:28,413 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 21:53:28,414 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 21:53:28,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 21:53:28,414 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 21:53:28,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 21:53:28,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 21:53:28,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 21:53:28,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 21:53:28,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 21:53:28,416 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 21:53:28,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 21:53:28,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 21:53:28,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 21:53:28,416 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 21:53:28,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 21:53:28,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 21:53:28,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 21:53:28,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 21:53:28,417 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 21:53:28,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 21:53:28,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 21:53:28,418 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 21:53:28,455 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 21:53:28,467 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 21:53:28,471 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 21:53:28,472 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 21:53:28,473 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 21:53:28,474 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label13.c [2019-10-02 21:53:28,545 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3b68e87a/5cccba69eb964e46bca28facd9988cdd/FLAG8b9339044 [2019-10-02 21:53:29,241 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 21:53:29,242 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label13.c [2019-10-02 21:53:29,273 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3b68e87a/5cccba69eb964e46bca28facd9988cdd/FLAG8b9339044 [2019-10-02 21:53:29,402 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3b68e87a/5cccba69eb964e46bca28facd9988cdd [2019-10-02 21:53:29,415 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 21:53:29,417 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 21:53:29,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 21:53:29,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 21:53:29,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 21:53:29,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 09:53:29" (1/1) ... [2019-10-02 21:53:29,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b2e1afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:53:29, skipping insertion in model container [2019-10-02 21:53:29,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 09:53:29" (1/1) ... [2019-10-02 21:53:29,435 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 21:53:29,572 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 21:53:30,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 21:53:30,828 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 21:53:31,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 21:53:31,348 INFO L192 MainTranslator]: Completed translation [2019-10-02 21:53:31,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:53:31 WrapperNode [2019-10-02 21:53:31,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 21:53:31,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 21:53:31,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 21:53:31,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 21:53:31,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:53:31" (1/1) ... [2019-10-02 21:53:31,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:53:31" (1/1) ... [2019-10-02 21:53:31,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:53:31" (1/1) ... [2019-10-02 21:53:31,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:53:31" (1/1) ... [2019-10-02 21:53:31,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:53:31" (1/1) ... [2019-10-02 21:53:31,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:53:31" (1/1) ... [2019-10-02 21:53:31,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:53:31" (1/1) ... [2019-10-02 21:53:31,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 21:53:31,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 21:53:31,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 21:53:31,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 21:53:31,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:53:31" (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 21:53:31,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 21:53:31,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 21:53:31,727 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 21:53:31,728 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-02 21:53:31,728 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-02 21:53:31,728 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 21:53:31,728 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 21:53:31,729 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-02 21:53:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-02 21:53:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 21:53:31,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 21:53:31,732 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 21:53:31,732 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 21:53:31,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 21:53:31,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 21:53:35,329 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 21:53:35,329 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 21:53:35,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 09:53:35 BoogieIcfgContainer [2019-10-02 21:53:35,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 21:53:35,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 21:53:35,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 21:53:35,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 21:53:35,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 09:53:29" (1/3) ... [2019-10-02 21:53:35,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5473fbe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 09:53:35, skipping insertion in model container [2019-10-02 21:53:35,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 09:53:31" (2/3) ... [2019-10-02 21:53:35,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5473fbe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 09:53:35, skipping insertion in model container [2019-10-02 21:53:35,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 09:53:35" (3/3) ... [2019-10-02 21:53:35,339 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label13.c [2019-10-02 21:53:35,349 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 21:53:35,358 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 21:53:35,375 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 21:53:35,406 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 21:53:35,406 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 21:53:35,406 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 21:53:35,406 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 21:53:35,407 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 21:53:35,407 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 21:53:35,407 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 21:53:35,407 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 21:53:35,442 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-10-02 21:53:35,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-02 21:53:35,459 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 21:53:35,460 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] [2019-10-02 21:53:35,463 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 21:53:35,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:53:35,469 INFO L82 PathProgramCache]: Analyzing trace with hash 452245930, now seen corresponding path program 1 times [2019-10-02 21:53:35,472 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 21:53:35,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:53:35,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 21:53:35,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:53:35,529 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 21:53:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 21:53:35,843 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 21:53:35,846 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 21:53:35,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 21:53:35,846 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 21:53:35,852 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 21:53:35,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 21:53:35,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 21:53:35,871 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2019-10-02 21:53:43,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 21:53:43,496 INFO L93 Difference]: Finished difference Result 2202 states and 3439 transitions. [2019-10-02 21:53:43,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 21:53:43,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-10-02 21:53:43,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 21:53:43,539 INFO L225 Difference]: With dead ends: 2202 [2019-10-02 21:53:43,539 INFO L226 Difference]: Without dead ends: 2114 [2019-10-02 21:53:43,541 INFO L640 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 [2019-10-02 21:53:43,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2019-10-02 21:53:43,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 2114. [2019-10-02 21:53:43,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2019-10-02 21:53:43,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3320 transitions. [2019-10-02 21:53:43,692 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3320 transitions. Word has length 51 [2019-10-02 21:53:43,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 21:53:43,693 INFO L475 AbstractCegarLoop]: Abstraction has 2114 states and 3320 transitions. [2019-10-02 21:53:43,693 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 21:53:43,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3320 transitions. [2019-10-02 21:53:43,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-02 21:53:43,699 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 21:53:43,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:53:43,700 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 21:53:43,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:53:43,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1249400303, now seen corresponding path program 1 times [2019-10-02 21:53:43,701 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 21:53:43,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:53:43,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 21:53:43,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:53:43,703 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 21:53:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 21:53:43,890 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 21:53:43,891 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 21:53:43,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 21:53:43,891 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 21:53:43,893 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 21:53:43,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 21:53:43,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 21:53:43,894 INFO L87 Difference]: Start difference. First operand 2114 states and 3320 transitions. Second operand 5 states. [2019-10-02 21:53:49,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 21:53:49,716 INFO L93 Difference]: Finished difference Result 4328 states and 6510 transitions. [2019-10-02 21:53:49,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 21:53:49,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2019-10-02 21:53:49,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 21:53:49,742 INFO L225 Difference]: With dead ends: 4328 [2019-10-02 21:53:49,742 INFO L226 Difference]: Without dead ends: 4328 [2019-10-02 21:53:49,743 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-02 21:53:49,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4328 states. [2019-10-02 21:53:49,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4328 to 4296. [2019-10-02 21:53:49,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4296 states. [2019-10-02 21:53:49,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 6416 transitions. [2019-10-02 21:53:49,849 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 6416 transitions. Word has length 120 [2019-10-02 21:53:49,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 21:53:49,850 INFO L475 AbstractCegarLoop]: Abstraction has 4296 states and 6416 transitions. [2019-10-02 21:53:49,850 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 21:53:49,850 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 6416 transitions. [2019-10-02 21:53:49,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-02 21:53:49,854 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 21:53:49,855 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:53:49,855 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 21:53:49,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:53:49,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1277555170, now seen corresponding path program 1 times [2019-10-02 21:53:49,856 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 21:53:49,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:53:49,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 21:53:49,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:53:49,857 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 21:53:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 21:53:50,035 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 21:53:50,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 21:53:50,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 21:53:50,036 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 21:53:50,037 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 21:53:50,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 21:53:50,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 21:53:50,038 INFO L87 Difference]: Start difference. First operand 4296 states and 6416 transitions. Second operand 6 states. [2019-10-02 21:53:55,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 21:53:55,376 INFO L93 Difference]: Finished difference Result 6539 states and 8489 transitions. [2019-10-02 21:53:55,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 21:53:55,376 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2019-10-02 21:53:55,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 21:53:55,413 INFO L225 Difference]: With dead ends: 6539 [2019-10-02 21:53:55,414 INFO L226 Difference]: Without dead ends: 6539 [2019-10-02 21:53:55,414 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-02 21:53:55,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6539 states. [2019-10-02 21:53:55,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6539 to 6505. [2019-10-02 21:53:55,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6505 states. [2019-10-02 21:53:55,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6505 states to 6505 states and 8361 transitions. [2019-10-02 21:53:55,593 INFO L78 Accepts]: Start accepts. Automaton has 6505 states and 8361 transitions. Word has length 147 [2019-10-02 21:53:55,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 21:53:55,595 INFO L475 AbstractCegarLoop]: Abstraction has 6505 states and 8361 transitions. [2019-10-02 21:53:55,595 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 21:53:55,595 INFO L276 IsEmpty]: Start isEmpty. Operand 6505 states and 8361 transitions. [2019-10-02 21:53:55,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-02 21:53:55,598 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 21:53:55,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:53:55,599 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 21:53:55,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:53:55,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1631165718, now seen corresponding path program 1 times [2019-10-02 21:53:55,600 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 21:53:55,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:53:55,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 21:53:55,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:53:55,604 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 21:53:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 21:53:55,743 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 21:53:55,744 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 21:53:55,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 21:53:55,744 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 21:53:55,745 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 21:53:55,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 21:53:55,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 21:53:55,745 INFO L87 Difference]: Start difference. First operand 6505 states and 8361 transitions. Second operand 4 states. [2019-10-02 21:54:01,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 21:54:01,044 INFO L93 Difference]: Finished difference Result 6505 states and 7877 transitions. [2019-10-02 21:54:01,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 21:54:01,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 157 [2019-10-02 21:54:01,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 21:54:01,071 INFO L225 Difference]: With dead ends: 6505 [2019-10-02 21:54:01,071 INFO L226 Difference]: Without dead ends: 6505 [2019-10-02 21:54:01,071 INFO L640 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 [2019-10-02 21:54:01,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6505 states. [2019-10-02 21:54:01,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6505 to 6505. [2019-10-02 21:54:01,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6505 states. [2019-10-02 21:54:01,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6505 states to 6505 states and 7877 transitions. [2019-10-02 21:54:01,191 INFO L78 Accepts]: Start accepts. Automaton has 6505 states and 7877 transitions. Word has length 157 [2019-10-02 21:54:01,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 21:54:01,192 INFO L475 AbstractCegarLoop]: Abstraction has 6505 states and 7877 transitions. [2019-10-02 21:54:01,192 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 21:54:01,193 INFO L276 IsEmpty]: Start isEmpty. Operand 6505 states and 7877 transitions. [2019-10-02 21:54:01,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2019-10-02 21:54:01,198 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 21:54:01,199 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:54:01,199 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 21:54:01,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:54:01,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1661605379, now seen corresponding path program 1 times [2019-10-02 21:54:01,200 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 21:54:01,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:54:01,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 21:54:01,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:54:01,202 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 21:54:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 21:54:01,366 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-10-02 21:54:01,367 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 21:54:01,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 21:54:01,367 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 21:54:01,367 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 21:54:01,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 21:54:01,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 21:54:01,368 INFO L87 Difference]: Start difference. First operand 6505 states and 7877 transitions. Second operand 4 states. [2019-10-02 21:54:08,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 21:54:08,124 INFO L93 Difference]: Finished difference Result 19313 states and 22635 transitions. [2019-10-02 21:54:08,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 21:54:08,127 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 226 [2019-10-02 21:54:08,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 21:54:08,197 INFO L225 Difference]: With dead ends: 19313 [2019-10-02 21:54:08,198 INFO L226 Difference]: Without dead ends: 19313 [2019-10-02 21:54:08,198 INFO L640 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 [2019-10-02 21:54:08,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19313 states. [2019-10-02 21:54:08,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19313 to 19313. [2019-10-02 21:54:08,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19313 states. [2019-10-02 21:54:08,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19313 states to 19313 states and 22635 transitions. [2019-10-02 21:54:08,517 INFO L78 Accepts]: Start accepts. Automaton has 19313 states and 22635 transitions. Word has length 226 [2019-10-02 21:54:08,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 21:54:08,517 INFO L475 AbstractCegarLoop]: Abstraction has 19313 states and 22635 transitions. [2019-10-02 21:54:08,517 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 21:54:08,517 INFO L276 IsEmpty]: Start isEmpty. Operand 19313 states and 22635 transitions. [2019-10-02 21:54:08,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2019-10-02 21:54:08,526 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 21:54:08,526 INFO L411 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, 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, 2, 2, 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] [2019-10-02 21:54:08,527 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 21:54:08,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:54:08,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1273411410, now seen corresponding path program 1 times [2019-10-02 21:54:08,527 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 21:54:08,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:54:08,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 21:54:08,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 21:54:08,531 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 21:54:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 21:54:08,852 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 230 proven. 70 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2019-10-02 21:54:08,853 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 21:54:08,853 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 21:54:08,855 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 340 with the following transitions: [2019-10-02 21:54:08,858 INFO L207 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1939], [1941], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2120], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2224], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2996], [3000], [3009], [3013], [3015], [3024], [3025], [3026], [3028], [3029] [2019-10-02 21:54:08,944 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 21:54:08,945 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 21:54:16,642 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 21:54:16,644 INFO L272 AbstractInterpreter]: Visited 128 different actions 128 times. Never merged. Never widened. Performed 295 root evaluator evaluations with a maximum evaluation depth of 13. Performed 295 inverse root evaluator evaluations with a maximum inverse evaluation depth of 13. Never found a fixpoint. Largest state had 24 variables. [2019-10-02 21:54:16,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 21:54:16,649 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 21:54:24,441 INFO L227 lantSequenceWeakener]: Weakened 315 states. On average, predicates are now at 77.84% of their original sizes. [2019-10-02 21:54:24,441 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 21:54:24,519 INFO L420 sIntCurrentIteration]: We unified 338 AI predicates to 338 [2019-10-02 21:54:24,519 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 21:54:24,520 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 21:54:24,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2019-10-02 21:54:24,520 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 21:54:24,521 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-02 21:54:24,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-02 21:54:24,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-10-02 21:54:24,521 INFO L87 Difference]: Start difference. First operand 19313 states and 22635 transitions. Second operand 10 states. [2019-10-02 21:56:13,139 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.