java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label33_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:41:45,064 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:41:45,066 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:41:45,081 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:41:45,082 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:41:45,083 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:41:45,084 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:41:45,087 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:41:45,089 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:41:45,090 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:41:45,096 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:41:45,097 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:41:45,101 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:41:45,102 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:41:45,103 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:41:45,106 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:41:45,108 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:41:45,111 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:41:45,115 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:41:45,119 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:41:45,121 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:41:45,123 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:41:45,128 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-18 11:41:45,136 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:41:45,138 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:41:45,139 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:41:45,141 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:41:45,141 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 11:41:45,170 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:41:45,171 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:41:45,172 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:41:45,172 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:41:45,172 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:41:45,173 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:41:45,173 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:41:45,173 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:41:45,173 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:41:45,173 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:41:45,174 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:41:45,174 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:41:45,175 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:41:45,175 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:41:45,175 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:41:45,175 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:41:45,175 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:41:45,176 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:41:45,176 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:41:45,176 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:41:45,176 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:41:45,178 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:41:45,178 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:41:45,178 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:41:45,178 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:41:45,179 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:41:45,179 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:41:45,179 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:41:45,179 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:41:45,179 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:41:45,180 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:41:45,180 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:41:45,180 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:41:45,180 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:41:45,246 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:41:45,260 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:41:45,264 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:41:45,266 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:41:45,267 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:41:45,268 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label33_true-unreach-call.c [2018-09-18 11:41:45,610 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a94c5394/a73702a813124c9e87adbe861be4d98b/FLAG683736f8d [2018-09-18 11:41:46,172 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:41:46,173 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label33_true-unreach-call.c [2018-09-18 11:41:46,216 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a94c5394/a73702a813124c9e87adbe861be4d98b/FLAG683736f8d [2018-09-18 11:41:46,237 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a94c5394/a73702a813124c9e87adbe861be4d98b [2018-09-18 11:41:46,250 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:41:46,256 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:41:46,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:41:46,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:41:46,264 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:41:46,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:41:46" (1/1) ... [2018-09-18 11:41:46,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@359f2bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:46, skipping insertion in model container [2018-09-18 11:41:46,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:41:46" (1/1) ... [2018-09-18 11:41:46,284 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:41:47,885 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:41:47,907 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:41:48,672 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:41:49,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:49 WrapperNode [2018-09-18 11:41:49,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:41:49,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:41:49,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:41:49,045 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:41:49,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:49" (1/1) ... [2018-09-18 11:41:49,214 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:49" (1/1) ... [2018-09-18 11:41:50,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:41:50,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:41:50,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:41:50,214 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:41:50,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:49" (1/1) ... [2018-09-18 11:41:50,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:49" (1/1) ... [2018-09-18 11:41:50,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:49" (1/1) ... [2018-09-18 11:41:50,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:49" (1/1) ... [2018-09-18 11:41:50,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:49" (1/1) ... [2018-09-18 11:41:50,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:49" (1/1) ... [2018-09-18 11:41:50,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:49" (1/1) ... [2018-09-18 11:41:50,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:41:50,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:41:50,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:41:50,716 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:41:50,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:49" (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 [2018-09-18 11:41:50,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:41:50,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:41:50,796 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 11:41:50,797 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 11:41:50,797 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 11:41:50,797 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 11:41:50,797 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 11:41:50,797 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 11:41:50,798 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:41:50,798 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:41:50,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:41:50,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:41:50,799 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:41:50,799 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:42:03,505 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:42:03,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:42:03 BoogieIcfgContainer [2018-09-18 11:42:03,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:42:03,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:42:03,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:42:03,511 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:42:03,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:41:46" (1/3) ... [2018-09-18 11:42:03,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@778234b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:42:03, skipping insertion in model container [2018-09-18 11:42:03,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:49" (2/3) ... [2018-09-18 11:42:03,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@778234b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:42:03, skipping insertion in model container [2018-09-18 11:42:03,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:42:03" (3/3) ... [2018-09-18 11:42:03,515 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label33_true-unreach-call.c [2018-09-18 11:42:03,525 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:42:03,534 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:42:03,605 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:42:03,606 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:42:03,606 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:42:03,607 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:42:03,607 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:42:03,607 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:42:03,607 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:42:03,607 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:42:03,607 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:42:03,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-18 11:42:03,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-18 11:42:03,686 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:42:03,688 INFO L376 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] [2018-09-18 11:42:03,689 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:42:03,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1221067980, now seen corresponding path program 1 times [2018-09-18 11:42:03,697 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:42:03,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:03,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:42:03,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:03,748 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:42:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:42:04,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:42:04,261 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:42:04,261 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:42:04,261 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:42:04,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:42:04,283 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:42:04,284 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:42:04,288 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-09-18 11:42:19,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:42:19,713 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-09-18 11:42:19,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:42:19,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2018-09-18 11:42:19,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:42:19,771 INFO L225 Difference]: With dead ends: 3968 [2018-09-18 11:42:19,771 INFO L226 Difference]: Without dead ends: 2842 [2018-09-18 11:42:19,784 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:42:19,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-09-18 11:42:19,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-09-18 11:42:19,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-09-18 11:42:19,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-09-18 11:42:19,997 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 42 [2018-09-18 11:42:19,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:42:19,998 INFO L480 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-09-18 11:42:19,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:42:19,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-09-18 11:42:20,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-09-18 11:42:20,005 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:42:20,005 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:42:20,005 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:42:20,006 INFO L82 PathProgramCache]: Analyzing trace with hash 894022032, now seen corresponding path program 1 times [2018-09-18 11:42:20,006 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:42:20,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:20,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:42:20,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:20,007 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:42:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:42:20,337 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:42:20,337 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:42:20,337 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:42:20,337 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:42:20,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:42:20,340 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:42:20,340 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:42:20,341 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-09-18 11:42:36,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:42:36,157 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-09-18 11:42:36,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:42:36,160 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2018-09-18 11:42:36,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:42:36,187 INFO L225 Difference]: With dead ends: 5673 [2018-09-18 11:42:36,188 INFO L226 Difference]: Without dead ends: 3698 [2018-09-18 11:42:36,196 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:42:36,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-09-18 11:42:36,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-09-18 11:42:36,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-09-18 11:42:36,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5871 transitions. [2018-09-18 11:42:36,313 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5871 transitions. Word has length 112 [2018-09-18 11:42:36,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:42:36,314 INFO L480 AbstractCegarLoop]: Abstraction has 3687 states and 5871 transitions. [2018-09-18 11:42:36,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:42:36,314 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5871 transitions. [2018-09-18 11:42:36,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-09-18 11:42:36,317 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:42:36,318 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:42:36,318 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:42:36,318 INFO L82 PathProgramCache]: Analyzing trace with hash -463864276, now seen corresponding path program 1 times [2018-09-18 11:42:36,319 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:42:36,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:36,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:42:36,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:36,320 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:42:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:42:36,584 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:42:36,585 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:42:36,585 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:42:36,585 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:42:36,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:42:36,586 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:42:36,586 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:42:36,586 INFO L87 Difference]: Start difference. First operand 3687 states and 5871 transitions. Second operand 5 states. [2018-09-18 11:42:48,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:42:48,648 INFO L93 Difference]: Finished difference Result 10963 states and 17868 transitions. [2018-09-18 11:42:48,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:42:48,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-09-18 11:42:48,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:42:48,693 INFO L225 Difference]: With dead ends: 10963 [2018-09-18 11:42:48,693 INFO L226 Difference]: Without dead ends: 7282 [2018-09-18 11:42:48,709 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:42:48,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7282 states. [2018-09-18 11:42:48,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7282 to 7175. [2018-09-18 11:42:48,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7175 states. [2018-09-18 11:42:48,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7175 states to 7175 states and 10522 transitions. [2018-09-18 11:42:48,909 INFO L78 Accepts]: Start accepts. Automaton has 7175 states and 10522 transitions. Word has length 114 [2018-09-18 11:42:48,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:42:48,910 INFO L480 AbstractCegarLoop]: Abstraction has 7175 states and 10522 transitions. [2018-09-18 11:42:48,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:42:48,910 INFO L276 IsEmpty]: Start isEmpty. Operand 7175 states and 10522 transitions. [2018-09-18 11:42:48,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-18 11:42:48,913 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:42:48,914 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:42:48,914 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:42:48,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1460284852, now seen corresponding path program 1 times [2018-09-18 11:42:48,915 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:42:48,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:48,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:42:48,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:48,916 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:42:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:42:49,151 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:42:49,152 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:42:49,152 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:42:49,152 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:42:49,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:42:49,153 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:42:49,153 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:42:49,154 INFO L87 Difference]: Start difference. First operand 7175 states and 10522 transitions. Second operand 4 states. [2018-09-18 11:43:01,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:43:01,341 INFO L93 Difference]: Finished difference Result 27677 states and 43232 transitions. [2018-09-18 11:43:01,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:43:01,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2018-09-18 11:43:01,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:43:01,452 INFO L225 Difference]: With dead ends: 27677 [2018-09-18 11:43:01,452 INFO L226 Difference]: Without dead ends: 20508 [2018-09-18 11:43:01,503 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:43:01,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20508 states. [2018-09-18 11:43:01,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20508 to 20471. [2018-09-18 11:43:01,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20471 states. [2018-09-18 11:43:02,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20471 states to 20471 states and 29111 transitions. [2018-09-18 11:43:02,038 INFO L78 Accepts]: Start accepts. Automaton has 20471 states and 29111 transitions. Word has length 158 [2018-09-18 11:43:02,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:43:02,039 INFO L480 AbstractCegarLoop]: Abstraction has 20471 states and 29111 transitions. [2018-09-18 11:43:02,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:43:02,039 INFO L276 IsEmpty]: Start isEmpty. Operand 20471 states and 29111 transitions. [2018-09-18 11:43:02,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-09-18 11:43:02,052 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:43:02,053 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:43:02,053 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:43:02,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1058546082, now seen corresponding path program 1 times [2018-09-18 11:43:02,054 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:43:02,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:02,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:02,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:02,055 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:43:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:02,393 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:43:02,810 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:43:02,811 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:43:02,811 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:43:02,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:02,826 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:43:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:02,944 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:43:03,236 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-09-18 11:43:03,236 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:43:03,731 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-09-18 11:43:03,766 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:43:03,766 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 8 [2018-09-18 11:43:03,767 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:43:03,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:43:03,768 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:43:03,768 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:43:03,769 INFO L87 Difference]: Start difference. First operand 20471 states and 29111 transitions. Second operand 3 states. [2018-09-18 11:43:14,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:43:14,493 INFO L93 Difference]: Finished difference Result 50722 states and 73153 transitions. [2018-09-18 11:43:14,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:43:14,494 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 273 [2018-09-18 11:43:14,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:43:14,673 INFO L225 Difference]: With dead ends: 50722 [2018-09-18 11:43:14,674 INFO L226 Difference]: Without dead ends: 30257 [2018-09-18 11:43:14,798 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:43:14,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30257 states. [2018-09-18 11:43:15,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30257 to 30257. [2018-09-18 11:43:15,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30257 states. [2018-09-18 11:43:15,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30257 states to 30257 states and 41087 transitions. [2018-09-18 11:43:15,560 INFO L78 Accepts]: Start accepts. Automaton has 30257 states and 41087 transitions. Word has length 273 [2018-09-18 11:43:15,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:43:15,560 INFO L480 AbstractCegarLoop]: Abstraction has 30257 states and 41087 transitions. [2018-09-18 11:43:15,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:43:15,561 INFO L276 IsEmpty]: Start isEmpty. Operand 30257 states and 41087 transitions. [2018-09-18 11:43:15,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-09-18 11:43:15,570 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:43:15,571 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:43:15,571 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:43:15,571 INFO L82 PathProgramCache]: Analyzing trace with hash -626093121, now seen corresponding path program 1 times [2018-09-18 11:43:15,572 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:43:15,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:15,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:15,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:15,573 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:43:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:16,052 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 149 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:43:16,052 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:43:16,053 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:43:16,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:16,069 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:43:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:16,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:43:16,386 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-18 11:43:16,386 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:43:16,848 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-18 11:43:16,879 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 11:43:16,879 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 6 [2018-09-18 11:43:16,879 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:43:16,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:43:16,880 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:43:16,880 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:43:16,881 INFO L87 Difference]: Start difference. First operand 30257 states and 41087 transitions. Second operand 3 states. [2018-09-18 11:43:28,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:43:28,975 INFO L93 Difference]: Finished difference Result 66167 states and 90558 transitions. [2018-09-18 11:43:28,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:43:28,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 282 [2018-09-18 11:43:28,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:43:29,140 INFO L225 Difference]: With dead ends: 66167 [2018-09-18 11:43:29,140 INFO L226 Difference]: Without dead ends: 35916 [2018-09-18 11:43:29,219 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 564 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:43:29,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35916 states. [2018-09-18 11:43:29,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35916 to 35111. [2018-09-18 11:43:29,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35111 states. [2018-09-18 11:43:29,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35111 states to 35111 states and 44441 transitions. [2018-09-18 11:43:29,842 INFO L78 Accepts]: Start accepts. Automaton has 35111 states and 44441 transitions. Word has length 282 [2018-09-18 11:43:29,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:43:29,843 INFO L480 AbstractCegarLoop]: Abstraction has 35111 states and 44441 transitions. [2018-09-18 11:43:29,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:43:29,843 INFO L276 IsEmpty]: Start isEmpty. Operand 35111 states and 44441 transitions. [2018-09-18 11:43:29,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-09-18 11:43:29,867 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:43:29,868 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:43:29,868 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:43:29,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1699353600, now seen corresponding path program 1 times [2018-09-18 11:43:29,869 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:43:29,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:29,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:29,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:29,870 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:43:29,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:30,296 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:43:31,125 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:43:31,125 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:43:31,126 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:43:31,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:31,140 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:43:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:31,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:43:31,819 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:43:31,820 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:43:32,035 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-18 11:43:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:43:32,724 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:43:32,724 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:43:32,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:32,754 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:43:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:33,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:43:33,308 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:43:33,308 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:43:33,780 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:43:33,784 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:43:33,785 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-18 11:43:33,785 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:43:33,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:43:33,789 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:43:33,789 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-09-18 11:43:33,790 INFO L87 Difference]: Start difference. First operand 35111 states and 44441 transitions. Second operand 9 states. [2018-09-18 11:43:54,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:43:54,751 INFO L93 Difference]: Finished difference Result 102146 states and 140140 transitions. [2018-09-18 11:43:54,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-18 11:43:54,752 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 384 [2018-09-18 11:43:54,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:43:54,958 INFO L225 Difference]: With dead ends: 102146 [2018-09-18 11:43:54,958 INFO L226 Difference]: Without dead ends: 67041 [2018-09-18 11:43:55,047 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1571 GetRequests, 1535 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=283, Invalid=977, Unknown=0, NotChecked=0, Total=1260 [2018-09-18 11:43:55,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67041 states. [2018-09-18 11:43:56,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67041 to 63290. [2018-09-18 11:43:56,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63290 states. [2018-09-18 11:43:56,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63290 states to 63290 states and 76780 transitions. [2018-09-18 11:43:56,174 INFO L78 Accepts]: Start accepts. Automaton has 63290 states and 76780 transitions. Word has length 384 [2018-09-18 11:43:56,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:43:56,175 INFO L480 AbstractCegarLoop]: Abstraction has 63290 states and 76780 transitions. [2018-09-18 11:43:56,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:43:56,175 INFO L276 IsEmpty]: Start isEmpty. Operand 63290 states and 76780 transitions. [2018-09-18 11:43:56,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-09-18 11:43:56,207 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:43:56,208 INFO L376 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:43:56,208 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:43:56,208 INFO L82 PathProgramCache]: Analyzing trace with hash 208769225, now seen corresponding path program 1 times [2018-09-18 11:43:56,209 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:43:56,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:56,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:56,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:56,210 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:43:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:56,796 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 315 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-18 11:43:56,796 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:43:56,796 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:43:56,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:56,806 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:43:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:56,936 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:43:57,134 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 315 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-18 11:43:57,135 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:43:57,736 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 315 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-18 11:43:57,756 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:43:57,757 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:43:57,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:57,773 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:43:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:58,054 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:43:58,258 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 315 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-18 11:43:58,259 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:43:58,492 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 315 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-18 11:43:58,494 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:43:58,494 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 11:43:58,494 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:43:58,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:43:58,496 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:43:58,496 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:43:58,496 INFO L87 Difference]: Start difference. First operand 63290 states and 76780 transitions. Second operand 9 states. [2018-09-18 11:44:28,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:44:28,410 INFO L93 Difference]: Finished difference Result 176942 states and 245715 transitions. [2018-09-18 11:44:28,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-18 11:44:28,411 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 406 [2018-09-18 11:44:28,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:44:28,974 INFO L225 Difference]: With dead ends: 176942 [2018-09-18 11:44:28,975 INFO L226 Difference]: Without dead ends: 112025 [2018-09-18 11:44:29,181 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1658 GetRequests, 1628 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=218, Invalid=484, Unknown=0, NotChecked=0, Total=702 [2018-09-18 11:44:29,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112025 states. [2018-09-18 11:44:31,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112025 to 110889. [2018-09-18 11:44:31,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110889 states. [2018-09-18 11:44:31,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110889 states to 110889 states and 134631 transitions. [2018-09-18 11:44:31,572 INFO L78 Accepts]: Start accepts. Automaton has 110889 states and 134631 transitions. Word has length 406 [2018-09-18 11:44:31,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:44:31,573 INFO L480 AbstractCegarLoop]: Abstraction has 110889 states and 134631 transitions. [2018-09-18 11:44:31,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:44:31,573 INFO L276 IsEmpty]: Start isEmpty. Operand 110889 states and 134631 transitions. [2018-09-18 11:44:31,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2018-09-18 11:44:31,622 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:44:31,623 INFO L376 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:44:31,623 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:44:31,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1133570023, now seen corresponding path program 1 times [2018-09-18 11:44:31,624 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:44:31,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:44:31,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:44:31,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:44:31,625 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:44:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:44:32,288 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 187 proven. 78 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-09-18 11:44:32,289 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:44:32,289 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:44:32,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:44:32,302 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:44:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:44:32,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:44:33,072 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2018-09-18 11:44:33,073 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:44:33,215 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2018-09-18 11:44:33,236 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 11:44:33,236 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [6] total 8 [2018-09-18 11:44:33,237 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:44:33,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:44:33,237 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:44:33,237 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:44:33,238 INFO L87 Difference]: Start difference. First operand 110889 states and 134631 transitions. Second operand 3 states. [2018-09-18 11:44:37,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:44:37,482 INFO L93 Difference]: Finished difference Result 220033 states and 267484 transitions. [2018-09-18 11:44:37,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:44:37,482 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 407 [2018-09-18 11:44:37,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:44:37,960 INFO L225 Difference]: With dead ends: 220033 [2018-09-18 11:44:37,961 INFO L226 Difference]: Without dead ends: 110024 [2018-09-18 11:44:38,193 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 813 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:44:38,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110024 states. [2018-09-18 11:44:40,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110024 to 110024. [2018-09-18 11:44:40,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110024 states. [2018-09-18 11:44:41,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110024 states to 110024 states and 133511 transitions. [2018-09-18 11:44:41,512 INFO L78 Accepts]: Start accepts. Automaton has 110024 states and 133511 transitions. Word has length 407 [2018-09-18 11:44:41,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:44:41,513 INFO L480 AbstractCegarLoop]: Abstraction has 110024 states and 133511 transitions. [2018-09-18 11:44:41,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:44:41,513 INFO L276 IsEmpty]: Start isEmpty. Operand 110024 states and 133511 transitions. [2018-09-18 11:44:41,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-09-18 11:44:41,553 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:44:41,554 INFO L376 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:44:41,554 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:44:41,555 INFO L82 PathProgramCache]: Analyzing trace with hash 31916744, now seen corresponding path program 1 times [2018-09-18 11:44:41,555 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:44:41,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:44:41,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:44:41,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:44:41,556 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:44:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:44:42,089 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 187 proven. 78 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-09-18 11:44:42,089 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:44:42,089 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:44:42,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:44:42,101 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:44:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:44:42,223 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:44:42,303 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2018-09-18 11:44:42,303 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:44:42,465 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2018-09-18 11:44:42,486 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 11:44:42,486 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-09-18 11:44:42,486 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:44:42,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:44:42,487 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:44:42,487 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:44:42,487 INFO L87 Difference]: Start difference. First operand 110024 states and 133511 transitions. Second operand 3 states. [2018-09-18 11:44:49,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:44:49,592 INFO L93 Difference]: Finished difference Result 213453 states and 258743 transitions. [2018-09-18 11:44:49,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:44:49,592 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 411 [2018-09-18 11:44:49,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:44:49,926 INFO L225 Difference]: With dead ends: 213453 [2018-09-18 11:44:49,926 INFO L226 Difference]: Without dead ends: 104309 [2018-09-18 11:44:50,130 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 821 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:44:50,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104309 states. [2018-09-18 11:44:52,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104309 to 104086. [2018-09-18 11:44:52,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104086 states. [2018-09-18 11:44:53,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104086 states to 104086 states and 120561 transitions. [2018-09-18 11:44:53,159 INFO L78 Accepts]: Start accepts. Automaton has 104086 states and 120561 transitions. Word has length 411 [2018-09-18 11:44:53,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:44:53,160 INFO L480 AbstractCegarLoop]: Abstraction has 104086 states and 120561 transitions. [2018-09-18 11:44:53,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:44:53,160 INFO L276 IsEmpty]: Start isEmpty. Operand 104086 states and 120561 transitions. [2018-09-18 11:44:53,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2018-09-18 11:44:53,201 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:44:53,202 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:44:53,202 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:44:53,202 INFO L82 PathProgramCache]: Analyzing trace with hash -950703183, now seen corresponding path program 1 times [2018-09-18 11:44:53,203 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:44:53,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:44:53,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:44:53,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:44:53,204 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:44:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:44:53,997 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 318 proven. 284 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-09-18 11:44:53,997 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:44:53,997 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:44:54,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:44:54,006 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:44:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:44:54,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:44:54,690 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 592 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-09-18 11:44:54,691 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:44:56,046 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 323 proven. 142 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-09-18 11:44:56,067 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:44:56,068 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:44:56,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:44:56,084 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:44:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:44:56,438 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:44:56,752 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 587 proven. 6 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-09-18 11:44:56,752 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:44:57,075 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 320 proven. 217 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2018-09-18 11:44:57,078 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:44:57,079 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 11:44:57,079 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:44:57,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:44:57,080 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:44:57,080 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:44:57,081 INFO L87 Difference]: Start difference. First operand 104086 states and 120561 transitions. Second operand 9 states. [2018-09-18 11:45:12,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:45:12,341 INFO L93 Difference]: Finished difference Result 208579 states and 242611 transitions. [2018-09-18 11:45:12,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-18 11:45:12,341 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 510 [2018-09-18 11:45:12,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:45:12,633 INFO L225 Difference]: With dead ends: 208579 [2018-09-18 11:45:12,633 INFO L226 Difference]: Without dead ends: 104513 [2018-09-18 11:45:12,786 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2064 GetRequests, 2037 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-09-18 11:45:12,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104513 states. [2018-09-18 11:45:15,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104513 to 103550. [2018-09-18 11:45:15,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103550 states. [2018-09-18 11:45:15,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103550 states to 103550 states and 116087 transitions. [2018-09-18 11:45:15,282 INFO L78 Accepts]: Start accepts. Automaton has 103550 states and 116087 transitions. Word has length 510 [2018-09-18 11:45:15,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:45:15,282 INFO L480 AbstractCegarLoop]: Abstraction has 103550 states and 116087 transitions. [2018-09-18 11:45:15,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:45:15,282 INFO L276 IsEmpty]: Start isEmpty. Operand 103550 states and 116087 transitions. [2018-09-18 11:45:15,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2018-09-18 11:45:15,300 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:45:15,300 INFO L376 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-18 11:45:15,301 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:45:15,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1694702320, now seen corresponding path program 1 times [2018-09-18 11:45:15,301 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:45:15,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:45:15,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:45:15,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:45:15,302 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:45:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:45:15,666 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 366 proven. 33 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-09-18 11:45:15,667 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:45:15,667 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:45:15,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:45:15,679 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:45:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:45:15,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:45:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2018-09-18 11:45:16,071 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:45:16,560 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2018-09-18 11:45:16,596 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 11:45:16,597 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 4 [2018-09-18 11:45:16,598 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:45:16,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:45:16,599 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:45:16,599 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:45:16,599 INFO L87 Difference]: Start difference. First operand 103550 states and 116087 transitions. Second operand 3 states. Received shutdown request... [2018-09-18 11:45:22,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:45:22,754 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 11:45:22,759 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 11:45:22,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 11:45:22 BoogieIcfgContainer [2018-09-18 11:45:22,759 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 11:45:22,760 INFO L168 Benchmark]: Toolchain (without parser) took 216509.19 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -322.4 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-09-18 11:45:22,761 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 11:45:22,762 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2787.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. [2018-09-18 11:45:22,763 INFO L168 Benchmark]: Boogie Procedure Inliner took 1168.19 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 985.1 MB). Free memory was 1.1 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 200.7 MB. Max. memory is 7.1 GB. [2018-09-18 11:45:22,764 INFO L168 Benchmark]: Boogie Preprocessor took 502.15 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 77.8 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB. [2018-09-18 11:45:22,764 INFO L168 Benchmark]: RCFGBuilder took 12790.49 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 148.4 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -20.1 MB). Peak memory consumption was 709.4 MB. Max. memory is 7.1 GB. [2018-09-18 11:45:22,765 INFO L168 Benchmark]: TraceAbstraction took 199252.28 ms. Allocated memory was 2.7 GB in the beginning and 3.4 GB in the end (delta: 785.9 MB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 586.2 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-09-18 11:45:22,771 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2787.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1168.19 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 985.1 MB). Free memory was 1.1 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 200.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 502.15 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 77.8 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12790.49 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 148.4 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -20.1 MB). Peak memory consumption was 709.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 199252.28 ms. Allocated memory was 2.7 GB in the beginning and 3.4 GB in the end (delta: 785.9 MB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 586.2 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 117]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 117). Cancelled while BasicCegarLoop was constructing difference of abstraction (103550states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (45946 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 199.1s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 165.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9580 SDtfs, 43390 SDslu, 5718 SDs, 0 SdLazy, 72558 SolverSat, 17075 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 134.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9112 GetRequests, 8972 SyntacticMatches, 22 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110889occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 14.7s AutomataMinimizationTime, 11 MinimizatonAttempts, 7894 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 13.8s InterpolantComputationTime, 8090 NumberOfCodeBlocks, 8090 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 12538 ConstructedInterpolants, 0 QuantifiedInterpolants, 12104523 SizeOfPredicates, 16 NumberOfNonLiveVariables, 7285 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 34 InterpolantComputations, 13 PerfectInterpolantSequences, 10723/11620 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label33_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-45-22-785.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label33_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_11-45-22-785.csv Completed graceful shutdown