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/Problem12_label27_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:22:03,943 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:22:03,945 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:22:03,960 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:22:03,960 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:22:03,961 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:22:03,962 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:22:03,964 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:22:03,966 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:22:03,966 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:22:03,967 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:22:03,967 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:22:03,968 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:22:03,969 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:22:03,973 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:22:03,974 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:22:03,975 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:22:03,977 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:22:03,979 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:22:03,983 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:22:03,984 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:22:03,988 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:22:03,992 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:22:03,992 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:22:03,992 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:22:03,993 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:22:03,994 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:22:03,995 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:22:03,995 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:22:03,996 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:22:03,996 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:22:03,997 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:22:03,997 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:22:03,997 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:22:03,998 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:22:03,999 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:22:03,999 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 [2018-09-14 17:22:04,015 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:22:04,016 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:22:04,017 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:22:04,017 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:22:04,017 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:22:04,017 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:22:04,017 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:22:04,017 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:22:04,018 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:22:04,018 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:22:04,018 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:22:04,023 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:22:04,023 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:22:04,023 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:22:04,024 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:22:04,024 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:22:04,024 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:22:04,024 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:22:04,024 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:22:04,025 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:22:04,025 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:22:04,025 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:22:04,025 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:22:04,025 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:22:04,026 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:22:04,026 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:22:04,026 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:22:04,026 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:22:04,026 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:22:04,029 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:22:04,029 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:22:04,029 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:22:04,029 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:22:04,075 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:22:04,090 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:22:04,097 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:22:04,098 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:22:04,099 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:22:04,100 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label27_true-unreach-call.c [2018-09-14 17:22:04,469 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d09863ad/a410a3d74b2f4997b35e9727d7b14906/FLAG432eb7855 [2018-09-14 17:22:04,979 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:22:04,980 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label27_true-unreach-call.c [2018-09-14 17:22:05,015 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d09863ad/a410a3d74b2f4997b35e9727d7b14906/FLAG432eb7855 [2018-09-14 17:22:05,039 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d09863ad/a410a3d74b2f4997b35e9727d7b14906 [2018-09-14 17:22:05,054 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:22:05,060 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:22:05,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:22:05,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:22:05,071 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:22:05,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:22:05" (1/1) ... [2018-09-14 17:22:05,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@560f8b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:22:05, skipping insertion in model container [2018-09-14 17:22:05,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:22:05" (1/1) ... [2018-09-14 17:22:05,090 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:22:06,452 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:22:06,474 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:22:07,032 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:22:07,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:22:07 WrapperNode [2018-09-14 17:22:07,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:22:07,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:22:07,307 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:22:07,308 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:22:07,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:22:07" (1/1) ... [2018-09-14 17:22:07,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:22:07" (1/1) ... [2018-09-14 17:22:07,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:22:07,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:22:07,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:22:07,535 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:22:08,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:22:07" (1/1) ... [2018-09-14 17:22:08,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:22:07" (1/1) ... [2018-09-14 17:22:08,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:22:07" (1/1) ... [2018-09-14 17:22:08,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:22:07" (1/1) ... [2018-09-14 17:22:08,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:22:07" (1/1) ... [2018-09-14 17:22:08,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:22:07" (1/1) ... [2018-09-14 17:22:08,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:22:07" (1/1) ... [2018-09-14 17:22:08,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:22:08,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:22:08,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:22:08,497 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:22:08,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:22:07" (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 [2018-09-14 17:22:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:22:08,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:22:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 17:22:08,573 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 17:22:08,574 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 17:22:08,574 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 17:22:08,574 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:22:08,574 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:22:08,574 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:22:08,575 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:22:08,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:22:08,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:22:08,575 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:22:08,575 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:22:20,098 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:22:20,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:22:20 BoogieIcfgContainer [2018-09-14 17:22:20,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:22:20,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:22:20,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:22:20,104 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:22:20,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:22:05" (1/3) ... [2018-09-14 17:22:20,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d8415e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:22:20, skipping insertion in model container [2018-09-14 17:22:20,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:22:07" (2/3) ... [2018-09-14 17:22:20,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d8415e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:22:20, skipping insertion in model container [2018-09-14 17:22:20,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:22:20" (3/3) ... [2018-09-14 17:22:20,109 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label27_true-unreach-call.c [2018-09-14 17:22:20,118 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:22:20,127 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:22:20,193 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:22:20,193 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:22:20,194 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:22:20,194 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:22:20,194 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:22:20,194 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:22:20,194 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:22:20,195 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:22:20,195 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:22:20,239 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-14 17:22:20,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-14 17:22:20,248 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:22:20,249 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] [2018-09-14 17:22:20,250 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:22:20,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1410046180, now seen corresponding path program 1 times [2018-09-14 17:22:20,257 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:22:20,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:20,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:20,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:20,313 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:22:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:20,750 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:22:20,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:22:20,889 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:22:20,890 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:22:20,890 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:22:20,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:22:20,940 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:22:20,941 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:22:20,946 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-14 17:22:28,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:22:28,931 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-14 17:22:28,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:22:28,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2018-09-14 17:22:28,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:22:28,967 INFO L225 Difference]: With dead ends: 2446 [2018-09-14 17:22:28,968 INFO L226 Difference]: Without dead ends: 1604 [2018-09-14 17:22:28,979 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:22:29,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-14 17:22:29,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-14 17:22:29,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-14 17:22:29,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-09-14 17:22:29,167 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 38 [2018-09-14 17:22:29,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:22:29,168 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-09-14 17:22:29,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:22:29,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-09-14 17:22:29,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-09-14 17:22:29,181 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:22:29,182 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:22:29,182 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:22:29,183 INFO L82 PathProgramCache]: Analyzing trace with hash -552195830, now seen corresponding path program 1 times [2018-09-14 17:22:29,184 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:22:29,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:29,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:29,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:29,186 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:22:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:29,519 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:22:29,519 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:22:29,519 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:22:29,519 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:22:29,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:22:29,522 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:22:29,522 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:22:29,522 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 5 states. [2018-09-14 17:22:43,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:22:43,474 INFO L93 Difference]: Finished difference Result 4811 states and 8985 transitions. [2018-09-14 17:22:43,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:22:43,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2018-09-14 17:22:43,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:22:43,497 INFO L225 Difference]: With dead ends: 4811 [2018-09-14 17:22:43,497 INFO L226 Difference]: Without dead ends: 3213 [2018-09-14 17:22:43,503 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:22:43,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3213 states. [2018-09-14 17:22:43,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3213 to 3197. [2018-09-14 17:22:43,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3197 states. [2018-09-14 17:22:43,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 5703 transitions. [2018-09-14 17:22:43,616 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 5703 transitions. Word has length 112 [2018-09-14 17:22:43,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:22:43,617 INFO L480 AbstractCegarLoop]: Abstraction has 3197 states and 5703 transitions. [2018-09-14 17:22:43,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:22:43,617 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 5703 transitions. [2018-09-14 17:22:43,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-09-14 17:22:43,626 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:22:43,626 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:22:43,626 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:22:43,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1294703450, now seen corresponding path program 1 times [2018-09-14 17:22:43,627 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:22:43,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:43,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:43,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:43,629 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:22:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:43,951 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:22:43,951 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:22:43,952 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 [2018-09-14 17:22:43,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:43,974 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:22:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:44,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:22:44,217 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-14 17:22:44,217 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:22:44,613 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-14 17:22:44,635 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:22:44,635 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 11 [2018-09-14 17:22:44,636 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:22:44,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:22:44,637 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:22:44,637 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:22:44,637 INFO L87 Difference]: Start difference. First operand 3197 states and 5703 transitions. Second operand 4 states. [2018-09-14 17:22:53,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:22:53,441 INFO L93 Difference]: Finished difference Result 8800 states and 15768 transitions. [2018-09-14 17:22:53,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:22:53,442 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2018-09-14 17:22:53,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:22:53,478 INFO L225 Difference]: With dead ends: 8800 [2018-09-14 17:22:53,478 INFO L226 Difference]: Without dead ends: 5609 [2018-09-14 17:22:53,493 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 223 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:22:53,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5609 states. [2018-09-14 17:22:53,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5609 to 5598. [2018-09-14 17:22:53,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5598 states. [2018-09-14 17:22:53,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5598 states to 5598 states and 8293 transitions. [2018-09-14 17:22:53,663 INFO L78 Accepts]: Start accepts. Automaton has 5598 states and 8293 transitions. Word has length 114 [2018-09-14 17:22:53,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:22:53,664 INFO L480 AbstractCegarLoop]: Abstraction has 5598 states and 8293 transitions. [2018-09-14 17:22:53,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:22:53,664 INFO L276 IsEmpty]: Start isEmpty. Operand 5598 states and 8293 transitions. [2018-09-14 17:22:53,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-09-14 17:22:53,672 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:22:53,673 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:22:53,673 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:22:53,673 INFO L82 PathProgramCache]: Analyzing trace with hash -155809926, now seen corresponding path program 1 times [2018-09-14 17:22:53,674 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:22:53,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:53,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:53,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:53,675 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:22:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:53,886 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:22:53,886 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:22:53,886 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:22:53,886 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:22:53,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:22:53,887 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:22:53,888 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:22:53,888 INFO L87 Difference]: Start difference. First operand 5598 states and 8293 transitions. Second operand 6 states. [2018-09-14 17:23:05,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:23:05,552 INFO L93 Difference]: Finished difference Result 19318 states and 29861 transitions. [2018-09-14 17:23:05,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:23:05,557 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2018-09-14 17:23:05,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:23:05,638 INFO L225 Difference]: With dead ends: 19318 [2018-09-14 17:23:05,639 INFO L226 Difference]: Without dead ends: 13726 [2018-09-14 17:23:05,684 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:23:05,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13726 states. [2018-09-14 17:23:06,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13726 to 13623. [2018-09-14 17:23:06,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13623 states. [2018-09-14 17:23:06,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13623 states to 13623 states and 20151 transitions. [2018-09-14 17:23:06,092 INFO L78 Accepts]: Start accepts. Automaton has 13623 states and 20151 transitions. Word has length 120 [2018-09-14 17:23:06,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:23:06,093 INFO L480 AbstractCegarLoop]: Abstraction has 13623 states and 20151 transitions. [2018-09-14 17:23:06,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:23:06,093 INFO L276 IsEmpty]: Start isEmpty. Operand 13623 states and 20151 transitions. [2018-09-14 17:23:06,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-09-14 17:23:06,097 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:23:06,097 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:23:06,097 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:23:06,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1863702862, now seen corresponding path program 1 times [2018-09-14 17:23:06,098 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:23:06,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:06,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:06,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:06,099 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:23:06,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:06,445 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:23:06,446 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:23:06,446 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:23:06,446 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:23:06,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:23:06,447 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:23:06,447 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:23:06,449 INFO L87 Difference]: Start difference. First operand 13623 states and 20151 transitions. Second operand 5 states. [2018-09-14 17:23:14,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:23:14,709 INFO L93 Difference]: Finished difference Result 40560 states and 62714 transitions. [2018-09-14 17:23:14,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:23:14,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2018-09-14 17:23:14,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:23:14,823 INFO L225 Difference]: With dead ends: 40560 [2018-09-14 17:23:14,823 INFO L226 Difference]: Without dead ends: 26943 [2018-09-14 17:23:14,872 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:23:14,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26943 states. [2018-09-14 17:23:15,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26943 to 26751. [2018-09-14 17:23:15,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26751 states. [2018-09-14 17:23:15,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26751 states to 26751 states and 38208 transitions. [2018-09-14 17:23:15,572 INFO L78 Accepts]: Start accepts. Automaton has 26751 states and 38208 transitions. Word has length 124 [2018-09-14 17:23:15,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:23:15,573 INFO L480 AbstractCegarLoop]: Abstraction has 26751 states and 38208 transitions. [2018-09-14 17:23:15,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:23:15,573 INFO L276 IsEmpty]: Start isEmpty. Operand 26751 states and 38208 transitions. [2018-09-14 17:23:15,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-09-14 17:23:15,581 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:23:15,582 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:23:15,582 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:23:15,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1156140943, now seen corresponding path program 1 times [2018-09-14 17:23:15,582 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:23:15,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:15,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:15,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:15,584 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:23:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:15,865 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:23:16,273 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 62 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:23:16,273 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:23:16,273 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 [2018-09-14 17:23:16,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:16,287 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:23:16,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:16,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:23:16,948 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-14 17:23:16,949 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:23:17,179 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 62 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:23:17,209 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:23:17,209 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 17:23:17,209 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:23:17,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:23:17,210 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:23:17,211 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:23:17,212 INFO L87 Difference]: Start difference. First operand 26751 states and 38208 transitions. Second operand 5 states. [2018-09-14 17:23:28,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:23:28,300 INFO L93 Difference]: Finished difference Result 84280 states and 129313 transitions. [2018-09-14 17:23:28,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:23:28,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2018-09-14 17:23:28,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:23:28,490 INFO L225 Difference]: With dead ends: 84280 [2018-09-14 17:23:28,491 INFO L226 Difference]: Without dead ends: 57535 [2018-09-14 17:23:28,567 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 449 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-09-14 17:23:28,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57535 states. [2018-09-14 17:23:29,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57535 to 56932. [2018-09-14 17:23:29,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56932 states. [2018-09-14 17:23:29,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56932 states to 56932 states and 79202 transitions. [2018-09-14 17:23:29,747 INFO L78 Accepts]: Start accepts. Automaton has 56932 states and 79202 transitions. Word has length 227 [2018-09-14 17:23:29,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:23:29,748 INFO L480 AbstractCegarLoop]: Abstraction has 56932 states and 79202 transitions. [2018-09-14 17:23:29,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:23:29,748 INFO L276 IsEmpty]: Start isEmpty. Operand 56932 states and 79202 transitions. [2018-09-14 17:23:29,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-09-14 17:23:29,761 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:23:29,762 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:23:29,762 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:23:29,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1088751117, now seen corresponding path program 1 times [2018-09-14 17:23:29,762 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:23:29,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:29,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:29,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:29,763 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:23:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:30,052 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-14 17:23:30,053 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:23:30,053 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:23:30,053 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:23:30,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:23:30,054 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:23:30,054 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:23:30,055 INFO L87 Difference]: Start difference. First operand 56932 states and 79202 transitions. Second operand 4 states. [2018-09-14 17:23:40,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:23:40,329 INFO L93 Difference]: Finished difference Result 132678 states and 196314 transitions. [2018-09-14 17:23:40,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:23:40,334 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 261 [2018-09-14 17:23:40,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:23:40,614 INFO L225 Difference]: With dead ends: 132678 [2018-09-14 17:23:40,614 INFO L226 Difference]: Without dead ends: 75752 [2018-09-14 17:23:40,770 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 [2018-09-14 17:23:40,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75752 states. [2018-09-14 17:23:41,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75752 to 75747. [2018-09-14 17:23:41,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75747 states. [2018-09-14 17:23:42,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75747 states to 75747 states and 98351 transitions. [2018-09-14 17:23:42,109 INFO L78 Accepts]: Start accepts. Automaton has 75747 states and 98351 transitions. Word has length 261 [2018-09-14 17:23:42,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:23:42,110 INFO L480 AbstractCegarLoop]: Abstraction has 75747 states and 98351 transitions. [2018-09-14 17:23:42,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:23:42,113 INFO L276 IsEmpty]: Start isEmpty. Operand 75747 states and 98351 transitions. [2018-09-14 17:23:42,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-09-14 17:23:42,145 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:23:42,145 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:23:42,146 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:23:42,146 INFO L82 PathProgramCache]: Analyzing trace with hash 2134655435, now seen corresponding path program 1 times [2018-09-14 17:23:42,146 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:23:42,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:42,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:42,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:42,147 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:23:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:42,962 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:23:42,962 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:23:42,962 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:23:42,962 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:23:42,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:23:42,963 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:23:42,963 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:23:42,964 INFO L87 Difference]: Start difference. First operand 75747 states and 98351 transitions. Second operand 4 states. [2018-09-14 17:23:52,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:23:52,120 INFO L93 Difference]: Finished difference Result 180003 states and 241444 transitions. [2018-09-14 17:23:52,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:23:52,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 313 [2018-09-14 17:23:52,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:23:52,975 INFO L225 Difference]: With dead ends: 180003 [2018-09-14 17:23:52,975 INFO L226 Difference]: Without dead ends: 104262 [2018-09-14 17:23:53,083 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 [2018-09-14 17:23:53,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104262 states. [2018-09-14 17:23:54,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104262 to 104258. [2018-09-14 17:23:54,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104258 states. [2018-09-14 17:23:54,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104258 states to 104258 states and 136823 transitions. [2018-09-14 17:23:54,591 INFO L78 Accepts]: Start accepts. Automaton has 104258 states and 136823 transitions. Word has length 313 [2018-09-14 17:23:54,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:23:54,592 INFO L480 AbstractCegarLoop]: Abstraction has 104258 states and 136823 transitions. [2018-09-14 17:23:54,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:23:54,592 INFO L276 IsEmpty]: Start isEmpty. Operand 104258 states and 136823 transitions. [2018-09-14 17:23:54,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-09-14 17:23:54,654 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:23:54,655 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:23:54,655 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:23:54,655 INFO L82 PathProgramCache]: Analyzing trace with hash -375211331, now seen corresponding path program 1 times [2018-09-14 17:23:54,656 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:23:54,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:54,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:54,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:54,657 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:23:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:55,257 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 9 proven. 56 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-09-14 17:23:55,258 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:23:55,258 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 [2018-09-14 17:23:55,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:55,266 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:23:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:55,374 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:23:55,722 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-14 17:23:55,722 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:23:55,943 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2018-09-14 17:23:57,380 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 62 proven. 144 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:23:57,400 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:23:57,401 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-09-14 17:23:57,401 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:23:57,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:23:57,402 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:23:57,402 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:23:57,402 INFO L87 Difference]: Start difference. First operand 104258 states and 136823 transitions. Second operand 5 states. [2018-09-14 17:24:10,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:24:10,937 INFO L93 Difference]: Finished difference Result 229889 states and 304299 transitions. [2018-09-14 17:24:10,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-14 17:24:10,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 365 [2018-09-14 17:24:10,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:24:11,280 INFO L225 Difference]: With dead ends: 229889 [2018-09-14 17:24:11,281 INFO L226 Difference]: Without dead ends: 123318 [2018-09-14 17:24:11,425 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 728 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-09-14 17:24:11,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123318 states. [2018-09-14 17:24:13,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123318 to 122677. [2018-09-14 17:24:13,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122677 states. [2018-09-14 17:24:13,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122677 states to 122677 states and 160043 transitions. [2018-09-14 17:24:13,317 INFO L78 Accepts]: Start accepts. Automaton has 122677 states and 160043 transitions. Word has length 365 [2018-09-14 17:24:13,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:24:13,317 INFO L480 AbstractCegarLoop]: Abstraction has 122677 states and 160043 transitions. [2018-09-14 17:24:13,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:24:13,317 INFO L276 IsEmpty]: Start isEmpty. Operand 122677 states and 160043 transitions. [2018-09-14 17:24:13,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2018-09-14 17:24:13,427 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:24:13,428 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:24:13,428 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:24:13,429 INFO L82 PathProgramCache]: Analyzing trace with hash 2125831275, now seen corresponding path program 1 times [2018-09-14 17:24:13,429 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:24:13,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:13,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:13,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:13,432 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:24:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:14,108 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 172 proven. 124 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-14 17:24:14,108 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:24:14,108 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:24:14,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:14,126 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:24:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:14,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:24:15,480 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 336 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-14 17:24:15,480 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:24:15,898 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 172 proven. 124 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-14 17:24:15,919 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:24:15,919 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 6 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:24:15,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:15,937 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:24:16,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:16,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:24:16,331 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 336 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-14 17:24:16,331 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:24:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 172 proven. 124 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-14 17:24:16,632 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:24:16,633 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 17:24:16,633 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:24:16,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:24:16,634 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:24:16,634 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:24:16,635 INFO L87 Difference]: Start difference. First operand 122677 states and 160043 transitions. Second operand 9 states. [2018-09-14 17:24:33,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:24:33,267 INFO L93 Difference]: Finished difference Result 276169 states and 410570 transitions. [2018-09-14 17:24:33,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-14 17:24:33,267 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 417 [2018-09-14 17:24:33,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:24:33,918 INFO L225 Difference]: With dead ends: 276169 [2018-09-14 17:24:33,918 INFO L226 Difference]: Without dead ends: 136396 [2018-09-14 17:24:35,095 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1694 GetRequests, 1669 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-09-14 17:24:35,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136396 states. [2018-09-14 17:24:37,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136396 to 132162. [2018-09-14 17:24:37,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132162 states. [2018-09-14 17:24:37,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132162 states to 132162 states and 177153 transitions. [2018-09-14 17:24:37,508 INFO L78 Accepts]: Start accepts. Automaton has 132162 states and 177153 transitions. Word has length 417 [2018-09-14 17:24:37,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:24:37,508 INFO L480 AbstractCegarLoop]: Abstraction has 132162 states and 177153 transitions. [2018-09-14 17:24:37,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:24:37,508 INFO L276 IsEmpty]: Start isEmpty. Operand 132162 states and 177153 transitions. [2018-09-14 17:24:37,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2018-09-14 17:24:37,571 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:24:37,572 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:24:37,572 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:24:37,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1945821774, now seen corresponding path program 1 times [2018-09-14 17:24:37,572 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:24:37,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:37,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:37,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:37,574 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:24:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:38,546 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 14 proven. 85 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2018-09-14 17:24:38,546 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:24:38,547 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:24:38,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:38,555 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:24:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:38,695 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:24:41,722 WARN L178 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2018-09-14 17:24:42,009 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 14 proven. 85 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2018-09-14 17:24:42,010 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:24:42,429 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2018-09-14 17:24:42,451 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:24:42,451 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 9 [2018-09-14 17:24:42,452 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:24:42,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:24:42,452 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:24:42,453 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=48, Unknown=1, NotChecked=0, Total=72 [2018-09-14 17:24:42,453 INFO L87 Difference]: Start difference. First operand 132162 states and 177153 transitions. Second operand 3 states. [2018-09-14 17:24:49,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:24:49,433 INFO L93 Difference]: Finished difference Result 270497 states and 376566 transitions. [2018-09-14 17:24:49,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:24:49,433 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 488 [2018-09-14 17:24:49,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:24:49,967 INFO L225 Difference]: With dead ends: 270497 [2018-09-14 17:24:49,967 INFO L226 Difference]: Without dead ends: 147567 [2018-09-14 17:24:50,330 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 988 GetRequests, 977 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=23, Invalid=48, Unknown=1, NotChecked=0, Total=72 [2018-09-14 17:24:50,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147567 states. [2018-09-14 17:24:52,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147567 to 143668. [2018-09-14 17:24:52,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143668 states. [2018-09-14 17:24:53,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143668 states to 143668 states and 189790 transitions. [2018-09-14 17:24:53,208 INFO L78 Accepts]: Start accepts. Automaton has 143668 states and 189790 transitions. Word has length 488 [2018-09-14 17:24:53,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:24:53,208 INFO L480 AbstractCegarLoop]: Abstraction has 143668 states and 189790 transitions. [2018-09-14 17:24:53,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:24:53,209 INFO L276 IsEmpty]: Start isEmpty. Operand 143668 states and 189790 transitions. [2018-09-14 17:24:53,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 974 [2018-09-14 17:24:53,650 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:24:53,651 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:24:53,652 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:24:53,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1270623467, now seen corresponding path program 1 times [2018-09-14 17:24:53,652 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:24:53,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:53,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:53,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:53,654 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:24:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:55,395 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 99 proven. 365 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-14 17:24:55,395 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:24:55,395 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 [2018-09-14 17:24:55,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:55,404 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:24:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:55,661 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:24:56,054 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 504 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-14 17:24:56,054 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:25:01,168 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 242 proven. 152 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-09-14 17:25:01,189 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:25:01,189 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 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:25:01,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:01,213 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:25:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:01,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:25:02,668 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 361 proven. 2 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2018-09-14 17:25:02,669 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:25:03,832 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 101 proven. 289 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-09-14 17:25:03,834 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:25:03,835 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 17:25:03,835 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:25:03,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:25:03,837 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:25:03,837 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:25:03,838 INFO L87 Difference]: Start difference. First operand 143668 states and 189790 transitions. Second operand 9 states. [2018-09-14 17:25:18,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:25:18,161 INFO L93 Difference]: Finished difference Result 311786 states and 413678 transitions. [2018-09-14 17:25:18,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-14 17:25:18,161 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 973 [2018-09-14 17:25:18,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:25:18,675 INFO L225 Difference]: With dead ends: 311786 [2018-09-14 17:25:18,675 INFO L226 Difference]: Without dead ends: 159519 [2018-09-14 17:25:19,015 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3919 GetRequests, 3890 SyntacticMatches, 10 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2018-09-14 17:25:19,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159519 states. [2018-09-14 17:25:21,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159519 to 154496. [2018-09-14 17:25:21,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154496 states. [2018-09-14 17:25:21,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154496 states to 154496 states and 179358 transitions. [2018-09-14 17:25:21,771 INFO L78 Accepts]: Start accepts. Automaton has 154496 states and 179358 transitions. Word has length 973 [2018-09-14 17:25:21,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:25:21,771 INFO L480 AbstractCegarLoop]: Abstraction has 154496 states and 179358 transitions. [2018-09-14 17:25:21,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:25:21,772 INFO L276 IsEmpty]: Start isEmpty. Operand 154496 states and 179358 transitions. [2018-09-14 17:25:21,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1022 [2018-09-14 17:25:21,906 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:25:21,907 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:25:21,908 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:25:21,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1398931517, now seen corresponding path program 1 times [2018-09-14 17:25:21,908 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:25:21,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:21,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:21,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:21,913 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:25:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:24,841 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 465 proven. 205 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-14 17:25:24,842 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:25:24,842 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 [2018-09-14 17:25:24,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:24,849 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:25:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:25,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:25:26,241 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 475 proven. 2 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-09-14 17:25:26,241 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:25:27,508 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 475 proven. 2 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-09-14 17:25:27,529 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:25:27,530 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 [2018-09-14 17:25:27,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:27,545 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:25:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:28,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:25:28,995 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 549 proven. 6 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-09-14 17:25:28,996 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:25:30,256 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 551 proven. 4 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-09-14 17:25:30,259 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:25:30,260 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 5, 5, 5] total 21 [2018-09-14 17:25:30,260 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:25:30,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-14 17:25:30,263 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-14 17:25:30,263 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2018-09-14 17:25:30,263 INFO L87 Difference]: Start difference. First operand 154496 states and 179358 transitions. Second operand 19 states. [2018-09-14 17:25:35,806 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2018-09-14 17:25:37,315 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2018-09-14 17:25:39,082 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 Received shutdown request... [2018-09-14 17:25:52,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-14 17:25:52,017 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:25:52,024 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:25:52,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:25:52 BoogieIcfgContainer [2018-09-14 17:25:52,024 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:25:52,025 INFO L168 Benchmark]: Toolchain (without parser) took 226970.52 ms. Allocated memory was 1.5 GB in the beginning and 5.0 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-09-14 17:25:52,026 INFO L168 Benchmark]: CDTParser took 0.27 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. [2018-09-14 17:25:52,027 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2244.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-09-14 17:25:52,027 INFO L168 Benchmark]: Boogie Procedure Inliner took 227.03 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-14 17:25:52,028 INFO L168 Benchmark]: Boogie Preprocessor took 962.19 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 934.3 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. [2018-09-14 17:25:52,029 INFO L168 Benchmark]: RCFGBuilder took 11603.01 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 649.6 MB). Peak memory consumption was 649.6 MB. Max. memory is 7.1 GB. [2018-09-14 17:25:52,030 INFO L168 Benchmark]: TraceAbstraction took 211923.23 ms. Allocated memory was 2.5 GB in the beginning and 5.0 GB in the end (delta: 2.5 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -776.5 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-09-14 17:25:52,035 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 2244.21 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 227.03 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 962.19 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 934.3 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11603.01 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 649.6 MB). Peak memory consumption was 649.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211923.23 ms. Allocated memory was 2.5 GB in the beginning and 5.0 GB in the end (delta: 2.5 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -776.5 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 105). Cancelled while BasicCegarLoop was constructing difference of abstraction (154496states) and FLOYD_HOARE automaton (currently 60 states, 19 states before enhancement), while ReachableStatesComputation was computing reachable states (75265 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 211.8s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 160.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5084 SDtfs, 40406 SDslu, 2563 SDs, 0 SdLazy, 80588 SolverSat, 17939 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 116.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12289 GetRequests, 12074 SyntacticMatches, 38 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1962 ImplicationChecksByTransitivity, 12.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=154496occurred in iteration=12, 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: 15.5s AutomataMinimizationTime, 12 MinimizatonAttempts, 14731 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 26.8s InterpolantComputationTime, 10589 NumberOfCodeBlocks, 10589 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 16572 ConstructedInterpolants, 2 QuantifiedInterpolants, 41117000 SizeOfPredicates, 12 NumberOfNonLiveVariables, 8710 ConjunctsInSsa, 103 ConjunctsInUnsatCore, 33 InterpolantComputations, 10 PerfectInterpolantSequences, 9186/11166 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/Problem12_label27_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-25-52-048.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label27_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-25-52-048.csv Completed graceful shutdown