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/Problem03_label14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 07:24:39,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 07:24:39,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 07:24:39,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 07:24:39,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 07:24:39,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 07:24:39,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 07:24:39,640 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 07:24:39,667 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 07:24:39,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 07:24:39,668 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 07:24:39,668 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 07:24:39,669 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 07:24:39,669 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 07:24:39,670 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 07:24:39,670 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 07:24:39,670 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 07:24:39,670 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 07:24:39,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 07:24:39,672 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 07:24:39,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 07:24:39,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 07:24:39,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 07:24:39,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 07:24:39,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 07:24:39,673 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 07:24:39,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 07:24:39,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 07:24:39,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 07:24:39,674 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 07:24:39,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 07:24:39,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 07:24:39,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 07:24:39,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 07:24:39,675 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 07:24:39,675 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 07:24:39,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 07:24:39,675 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 07:24:39,703 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 07:24:39,714 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 07:24:39,721 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 07:24:39,722 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 07:24:39,723 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 07:24:39,723 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label14.c [2019-09-09 07:24:39,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a79824744/51cdb3652571429097488f1798bdf74e/FLAG54e39f1d3 [2019-09-09 07:24:40,456 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 07:24:40,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label14.c [2019-09-09 07:24:40,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a79824744/51cdb3652571429097488f1798bdf74e/FLAG54e39f1d3 [2019-09-09 07:24:40,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a79824744/51cdb3652571429097488f1798bdf74e [2019-09-09 07:24:40,645 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 07:24:40,646 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 07:24:40,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 07:24:40,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 07:24:40,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 07:24:40,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 07:24:40" (1/1) ... [2019-09-09 07:24:40,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d455d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:24:40, skipping insertion in model container [2019-09-09 07:24:40,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 07:24:40" (1/1) ... [2019-09-09 07:24:40,664 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 07:24:40,755 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 07:24:41,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 07:24:41,655 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 07:24:42,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 07:24:42,109 INFO L192 MainTranslator]: Completed translation [2019-09-09 07:24:42,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:24:42 WrapperNode [2019-09-09 07:24:42,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 07:24:42,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 07:24:42,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 07:24:42,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 07:24:42,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:24:42" (1/1) ... [2019-09-09 07:24:42,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:24:42" (1/1) ... [2019-09-09 07:24:42,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:24:42" (1/1) ... [2019-09-09 07:24:42,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:24:42" (1/1) ... [2019-09-09 07:24:42,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:24:42" (1/1) ... [2019-09-09 07:24:42,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:24:42" (1/1) ... [2019-09-09 07:24:42,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:24:42" (1/1) ... [2019-09-09 07:24:42,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 07:24:42,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 07:24:42,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 07:24:42,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 07:24:42,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:24:42" (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 07:24:42,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 07:24:42,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 07:24:42,367 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 07:24:42,367 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 07:24:42,368 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 07:24:42,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 07:24:42,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 07:24:42,368 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 07:24:42,369 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 07:24:42,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 07:24:42,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 07:24:44,324 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 07:24:44,324 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 07:24:44,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 07:24:44 BoogieIcfgContainer [2019-09-09 07:24:44,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 07:24:44,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 07:24:44,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 07:24:44,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 07:24:44,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 07:24:40" (1/3) ... [2019-09-09 07:24:44,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b04a10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 07:24:44, skipping insertion in model container [2019-09-09 07:24:44,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:24:42" (2/3) ... [2019-09-09 07:24:44,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b04a10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 07:24:44, skipping insertion in model container [2019-09-09 07:24:44,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 07:24:44" (3/3) ... [2019-09-09 07:24:44,336 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label14.c [2019-09-09 07:24:44,346 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 07:24:44,355 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 07:24:44,374 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 07:24:44,404 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 07:24:44,404 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 07:24:44,404 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 07:24:44,404 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 07:24:44,405 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 07:24:44,405 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 07:24:44,405 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 07:24:44,405 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 07:24:44,443 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2019-09-09 07:24:44,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-09-09 07:24:44,471 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:24:44,473 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:24:44,475 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:24:44,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:24:44,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1597050419, now seen corresponding path program 1 times [2019-09-09 07:24:44,483 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:24:44,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:24:44,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:24:44,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:24:44,537 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:24:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:24:45,395 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 07:24:45,398 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 07:24:45,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 07:24:45,398 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 07:24:45,404 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 07:24:45,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 07:24:45,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 07:24:45,422 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2019-09-09 07:24:47,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 07:24:47,599 INFO L93 Difference]: Finished difference Result 745 states and 1194 transitions. [2019-09-09 07:24:47,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 07:24:47,601 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2019-09-09 07:24:47,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 07:24:47,640 INFO L225 Difference]: With dead ends: 745 [2019-09-09 07:24:47,641 INFO L226 Difference]: Without dead ends: 673 [2019-09-09 07:24:47,645 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 07:24:47,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2019-09-09 07:24:47,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 464. [2019-09-09 07:24:47,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2019-09-09 07:24:47,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 735 transitions. [2019-09-09 07:24:47,746 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 735 transitions. Word has length 176 [2019-09-09 07:24:47,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 07:24:47,747 INFO L475 AbstractCegarLoop]: Abstraction has 464 states and 735 transitions. [2019-09-09 07:24:47,747 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 07:24:47,748 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 735 transitions. [2019-09-09 07:24:47,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-09-09 07:24:47,757 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:24:47,758 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 07:24:47,758 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:24:47,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:24:47,759 INFO L82 PathProgramCache]: Analyzing trace with hash 669492010, now seen corresponding path program 1 times [2019-09-09 07:24:47,759 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:24:47,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:24:47,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:24:47,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:24:47,764 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:24:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:24:48,015 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 07:24:48,015 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 07:24:48,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 07:24:48,016 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 07:24:48,022 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 07:24:48,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 07:24:48,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 07:24:48,023 INFO L87 Difference]: Start difference. First operand 464 states and 735 transitions. Second operand 6 states. [2019-09-09 07:24:49,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 07:24:49,770 INFO L93 Difference]: Finished difference Result 940 states and 1522 transitions. [2019-09-09 07:24:49,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-09 07:24:49,770 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 185 [2019-09-09 07:24:49,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 07:24:49,779 INFO L225 Difference]: With dead ends: 940 [2019-09-09 07:24:49,779 INFO L226 Difference]: Without dead ends: 940 [2019-09-09 07:24:49,780 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-09 07:24:49,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2019-09-09 07:24:49,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 901. [2019-09-09 07:24:49,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2019-09-09 07:24:49,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1419 transitions. [2019-09-09 07:24:49,843 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1419 transitions. Word has length 185 [2019-09-09 07:24:49,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 07:24:49,845 INFO L475 AbstractCegarLoop]: Abstraction has 901 states and 1419 transitions. [2019-09-09 07:24:49,845 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 07:24:49,845 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1419 transitions. [2019-09-09 07:24:49,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-09-09 07:24:49,854 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:24:49,854 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:24:49,855 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:24:49,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:24:49,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1991756601, now seen corresponding path program 1 times [2019-09-09 07:24:49,855 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:24:49,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:24:49,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:24:49,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:24:49,858 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:24:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:24:50,122 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 07:24:50,122 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 07:24:50,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 07:24:50,123 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 07:24:50,124 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 07:24:50,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 07:24:50,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 07:24:50,125 INFO L87 Difference]: Start difference. First operand 901 states and 1419 transitions. Second operand 3 states. [2019-09-09 07:24:51,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 07:24:51,282 INFO L93 Difference]: Finished difference Result 1747 states and 2650 transitions. [2019-09-09 07:24:51,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 07:24:51,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2019-09-09 07:24:51,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 07:24:51,298 INFO L225 Difference]: With dead ends: 1747 [2019-09-09 07:24:51,298 INFO L226 Difference]: Without dead ends: 1747 [2019-09-09 07:24:51,299 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 07:24:51,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2019-09-09 07:24:51,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1745. [2019-09-09 07:24:51,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1745 states. [2019-09-09 07:24:51,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 2646 transitions. [2019-09-09 07:24:51,369 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 2646 transitions. Word has length 188 [2019-09-09 07:24:51,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 07:24:51,380 INFO L475 AbstractCegarLoop]: Abstraction has 1745 states and 2646 transitions. [2019-09-09 07:24:51,380 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 07:24:51,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 2646 transitions. [2019-09-09 07:24:51,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-09-09 07:24:51,390 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:24:51,390 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 07:24:51,390 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:24:51,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:24:51,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1519728998, now seen corresponding path program 1 times [2019-09-09 07:24:51,391 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:24:51,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:24:51,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:24:51,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:24:51,393 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:24:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:24:51,539 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 07:24:51,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 07:24:51,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 07:24:51,540 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 07:24:51,540 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 07:24:51,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 07:24:51,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 07:24:51,541 INFO L87 Difference]: Start difference. First operand 1745 states and 2646 transitions. Second operand 6 states. [2019-09-09 07:24:53,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 07:24:53,293 INFO L93 Difference]: Finished difference Result 3596 states and 6100 transitions. [2019-09-09 07:24:53,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-09 07:24:53,294 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 193 [2019-09-09 07:24:53,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 07:24:53,328 INFO L225 Difference]: With dead ends: 3596 [2019-09-09 07:24:53,329 INFO L226 Difference]: Without dead ends: 3596 [2019-09-09 07:24:53,329 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-09 07:24:53,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3596 states. [2019-09-09 07:24:53,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3596 to 3514. [2019-09-09 07:24:53,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3514 states. [2019-09-09 07:24:53,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 5472 transitions. [2019-09-09 07:24:53,469 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 5472 transitions. Word has length 193 [2019-09-09 07:24:53,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 07:24:53,469 INFO L475 AbstractCegarLoop]: Abstraction has 3514 states and 5472 transitions. [2019-09-09 07:24:53,469 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 07:24:53,470 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 5472 transitions. [2019-09-09 07:24:53,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-09-09 07:24:53,482 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:24:53,482 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-09 07:24:53,482 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:24:53,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:24:53,483 INFO L82 PathProgramCache]: Analyzing trace with hash -741980659, now seen corresponding path program 1 times [2019-09-09 07:24:53,483 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:24:53,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:24:53,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:24:53,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:24:53,484 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:24:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:24:53,633 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 07:24:53,634 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 07:24:53,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-09 07:24:53,634 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 07:24:53,635 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-09 07:24:53,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-09 07:24:53,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-09 07:24:53,636 INFO L87 Difference]: Start difference. First operand 3514 states and 5472 transitions. Second operand 7 states. [2019-09-09 07:24:55,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 07:24:55,389 INFO L93 Difference]: Finished difference Result 6951 states and 12678 transitions. [2019-09-09 07:24:55,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 07:24:55,390 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2019-09-09 07:24:55,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 07:24:55,447 INFO L225 Difference]: With dead ends: 6951 [2019-09-09 07:24:55,447 INFO L226 Difference]: Without dead ends: 6951 [2019-09-09 07:24:55,448 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-09-09 07:24:55,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6951 states. [2019-09-09 07:24:55,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6951 to 6796. [2019-09-09 07:24:55,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6796 states. [2019-09-09 07:24:55,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6796 states to 6796 states and 11030 transitions. [2019-09-09 07:24:55,720 INFO L78 Accepts]: Start accepts. Automaton has 6796 states and 11030 transitions. Word has length 194 [2019-09-09 07:24:55,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 07:24:55,720 INFO L475 AbstractCegarLoop]: Abstraction has 6796 states and 11030 transitions. [2019-09-09 07:24:55,720 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-09 07:24:55,721 INFO L276 IsEmpty]: Start isEmpty. Operand 6796 states and 11030 transitions. [2019-09-09 07:24:55,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-09-09 07:24:55,752 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 07:24:55,752 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-09-09 07:24:55,753 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 07:24:55,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 07:24:55,753 INFO L82 PathProgramCache]: Analyzing trace with hash 713306706, now seen corresponding path program 1 times [2019-09-09 07:24:55,754 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 07:24:55,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:24:55,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 07:24:55,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 07:24:55,758 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 07:24:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 07:24:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 07:24:55,896 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 07:24:55,896 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 07:24:55,898 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 199 with the following transitions: [2019-09-09 07:24:55,904 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [13], [17], [21], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [877], [879], [1157], [1161], [1170], [1174], [1176], [1181], [1182], [1183], [1185], [1186] [2019-09-09 07:24:55,972 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 07:24:55,972 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)