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_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:20:03,964 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:20:03,966 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:20:03,978 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:20:03,978 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:20:03,979 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:20:03,981 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:20:03,982 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:20:03,984 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:20:03,985 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:20:03,986 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:20:03,986 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:20:03,987 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:20:03,988 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:20:03,989 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:20:03,990 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:20:03,991 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:20:03,993 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:20:03,995 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:20:03,996 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:20:03,997 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:20:03,999 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:20:04,001 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:20:04,001 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:20:04,003 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:20:04,004 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:20:04,007 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:20:04,008 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:20:04,009 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:20:04,013 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:20:04,013 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:20:04,014 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:20:04,014 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:20:04,014 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:20:04,016 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:20:04,017 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:20:04,017 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 17:20:04,046 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:20:04,046 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:20:04,047 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:20:04,047 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:20:04,048 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:20:04,048 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:20:04,048 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:20:04,048 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:20:04,048 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:20:04,049 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:20:04,049 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:20:04,049 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:20:04,050 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:20:04,050 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:20:04,050 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:20:04,050 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:20:04,051 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:20:04,052 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:20:04,052 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:20:04,052 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:20:04,052 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:20:04,053 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:20:04,053 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:20:04,053 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:20:04,053 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:20:04,053 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:20:04,054 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:20:04,054 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:20:04,054 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:20:04,054 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:20:04,054 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:20:04,055 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:20:04,055 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:20:04,118 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:20:04,132 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:20:04,136 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:20:04,137 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:20:04,138 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:20:04,139 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label16_true-unreach-call.c [2018-09-14 17:20:04,478 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86c6bd464/a60cd69982a84ef18286a9a7d686d71d/FLAGf5adbc34f [2018-09-14 17:20:04,944 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:20:04,946 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label16_true-unreach-call.c [2018-09-14 17:20:04,981 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86c6bd464/a60cd69982a84ef18286a9a7d686d71d/FLAGf5adbc34f [2018-09-14 17:20:05,004 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86c6bd464/a60cd69982a84ef18286a9a7d686d71d [2018-09-14 17:20:05,018 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:20:05,022 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:20:05,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:20:05,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:20:05,034 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:20:05,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:20:05" (1/1) ... [2018-09-14 17:20:05,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@428e54a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:05, skipping insertion in model container [2018-09-14 17:20:05,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:20:05" (1/1) ... [2018-09-14 17:20:05,052 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:20:06,428 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:20:06,448 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:20:07,108 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:20:07,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:07 WrapperNode [2018-09-14 17:20:07,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:20:07,337 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:20:07,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:20:07,338 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:20:07,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:07" (1/1) ... [2018-09-14 17:20:07,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:07" (1/1) ... [2018-09-14 17:20:07,606 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:20:07,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:20:07,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:20:07,607 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:20:08,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:07" (1/1) ... [2018-09-14 17:20:08,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:07" (1/1) ... [2018-09-14 17:20:08,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:07" (1/1) ... [2018-09-14 17:20:08,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:07" (1/1) ... [2018-09-14 17:20:08,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:07" (1/1) ... [2018-09-14 17:20:08,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:07" (1/1) ... [2018-09-14 17:20:08,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:07" (1/1) ... [2018-09-14 17:20:08,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:20:08,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:20:08,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:20:08,527 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:20:08,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:07" (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 17:20:08,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:20:08,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:20:08,611 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 17:20:08,611 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 17:20:08,612 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 17:20:08,612 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 17:20:08,612 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:20:08,612 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:20:08,612 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:20:08,612 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:20:08,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:20:08,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:20:08,613 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:20:08,613 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:20:19,463 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:20:19,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:20:19 BoogieIcfgContainer [2018-09-14 17:20:19,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:20:19,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:20:19,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:20:19,468 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:20:19,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:20:05" (1/3) ... [2018-09-14 17:20:19,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6c318b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:20:19, skipping insertion in model container [2018-09-14 17:20:19,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:20:07" (2/3) ... [2018-09-14 17:20:19,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6c318b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:20:19, skipping insertion in model container [2018-09-14 17:20:19,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:20:19" (3/3) ... [2018-09-14 17:20:19,472 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label16_true-unreach-call.c [2018-09-14 17:20:19,483 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:20:19,493 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:20:19,559 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:20:19,560 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:20:19,560 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:20:19,560 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:20:19,560 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:20:19,561 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:20:19,561 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:20:19,561 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:20:19,561 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:20:19,604 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-14 17:20:19,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-14 17:20:19,620 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:20:19,622 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:20:19,623 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:20:19,629 INFO L82 PathProgramCache]: Analyzing trace with hash -710124980, now seen corresponding path program 1 times [2018-09-14 17:20:19,631 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:20:19,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:20:19,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:20:19,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:20:19,694 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:20:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:20:20,176 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:20:20,301 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 17:20:20,303 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:20:20,304 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:20:20,304 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:20:20,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:20:20,329 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:20:20,330 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:20:20,333 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-14 17:20:28,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:20:28,347 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-14 17:20:28,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:20:28,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2018-09-14 17:20:28,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:20:28,383 INFO L225 Difference]: With dead ends: 2446 [2018-09-14 17:20:28,383 INFO L226 Difference]: Without dead ends: 1604 [2018-09-14 17:20:28,401 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 17:20:28,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-14 17:20:28,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-14 17:20:28,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-14 17:20:28,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-09-14 17:20:28,563 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 72 [2018-09-14 17:20:28,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:20:28,564 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-09-14 17:20:28,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:20:28,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-09-14 17:20:28,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-14 17:20:28,573 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:20:28,573 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:20:28,574 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:20:28,575 INFO L82 PathProgramCache]: Analyzing trace with hash -377303342, now seen corresponding path program 1 times [2018-09-14 17:20:28,575 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:20:28,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:20:28,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:20:28,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:20:28,576 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:20:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:20:28,853 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:20:28,854 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:20:28,854 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:20:28,854 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:20:28,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:20:28,858 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:20:28,858 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:20:28,858 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 5 states. [2018-09-14 17:20:41,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:20:41,363 INFO L93 Difference]: Finished difference Result 4038 states and 7427 transitions. [2018-09-14 17:20:41,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:20:41,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2018-09-14 17:20:41,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:20:41,388 INFO L225 Difference]: With dead ends: 4038 [2018-09-14 17:20:41,388 INFO L226 Difference]: Without dead ends: 2440 [2018-09-14 17:20:41,393 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 17:20:41,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2018-09-14 17:20:41,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2413. [2018-09-14 17:20:41,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2413 states. [2018-09-14 17:20:41,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 4141 transitions. [2018-09-14 17:20:41,474 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 4141 transitions. Word has length 146 [2018-09-14 17:20:41,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:20:41,475 INFO L480 AbstractCegarLoop]: Abstraction has 2413 states and 4141 transitions. [2018-09-14 17:20:41,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:20:41,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 4141 transitions. [2018-09-14 17:20:41,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-14 17:20:41,487 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:20:41,487 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:20:41,487 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:20:41,488 INFO L82 PathProgramCache]: Analyzing trace with hash 719530862, now seen corresponding path program 1 times [2018-09-14 17:20:41,488 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:20:41,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:20:41,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:20:41,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:20:41,491 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:20:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:20:41,714 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:20:41,714 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:20:41,714 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:20:41,715 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:20:41,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:20:41,715 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:20:41,716 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:20:41,716 INFO L87 Difference]: Start difference. First operand 2413 states and 4141 transitions. Second operand 4 states. [2018-09-14 17:20:51,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:20:51,178 INFO L93 Difference]: Finished difference Result 9492 states and 16754 transitions. [2018-09-14 17:20:51,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:20:51,185 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2018-09-14 17:20:51,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:20:51,237 INFO L225 Difference]: With dead ends: 9492 [2018-09-14 17:20:51,237 INFO L226 Difference]: Without dead ends: 7085 [2018-09-14 17:20:51,254 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:20:51,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7085 states. [2018-09-14 17:20:51,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7085 to 7085. [2018-09-14 17:20:51,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7085 states. [2018-09-14 17:20:51,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7085 states to 7085 states and 11749 transitions. [2018-09-14 17:20:51,468 INFO L78 Accepts]: Start accepts. Automaton has 7085 states and 11749 transitions. Word has length 148 [2018-09-14 17:20:51,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:20:51,469 INFO L480 AbstractCegarLoop]: Abstraction has 7085 states and 11749 transitions. [2018-09-14 17:20:51,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:20:51,469 INFO L276 IsEmpty]: Start isEmpty. Operand 7085 states and 11749 transitions. [2018-09-14 17:20:51,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-09-14 17:20:51,475 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:20:51,475 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:20:51,476 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:20:51,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1702645438, now seen corresponding path program 1 times [2018-09-14 17:20:51,476 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:20:51,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:20:51,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:20:51,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:20:51,477 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:20:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:20:51,752 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:20:52,073 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:20:52,074 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:20:52,074 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:20:52,074 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:20:52,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:20:52,075 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:20:52,075 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:20:52,076 INFO L87 Difference]: Start difference. First operand 7085 states and 11749 transitions. Second operand 6 states. [2018-09-14 17:21:02,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:21:02,990 INFO L93 Difference]: Finished difference Result 15965 states and 26509 transitions. [2018-09-14 17:21:02,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:21:02,990 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-09-14 17:21:02,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:21:03,035 INFO L225 Difference]: With dead ends: 15965 [2018-09-14 17:21:03,036 INFO L226 Difference]: Without dead ends: 8886 [2018-09-14 17:21:03,068 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:21:03,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8886 states. [2018-09-14 17:21:03,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8886 to 8848. [2018-09-14 17:21:03,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8848 states. [2018-09-14 17:21:03,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8848 states to 8848 states and 14005 transitions. [2018-09-14 17:21:03,295 INFO L78 Accepts]: Start accepts. Automaton has 8848 states and 14005 transitions. Word has length 154 [2018-09-14 17:21:03,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:21:03,296 INFO L480 AbstractCegarLoop]: Abstraction has 8848 states and 14005 transitions. [2018-09-14 17:21:03,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:21:03,296 INFO L276 IsEmpty]: Start isEmpty. Operand 8848 states and 14005 transitions. [2018-09-14 17:21:03,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-14 17:21:03,301 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:21:03,301 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:21:03,302 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:21:03,302 INFO L82 PathProgramCache]: Analyzing trace with hash -901803398, now seen corresponding path program 1 times [2018-09-14 17:21:03,302 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:21:03,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:03,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:03,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:03,303 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:21:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:21:03,518 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:21:03,518 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:21:03,518 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:21:03,519 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:21:03,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:21:03,520 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:21:03,520 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:21:03,520 INFO L87 Difference]: Start difference. First operand 8848 states and 14005 transitions. Second operand 5 states. [2018-09-14 17:21:11,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:21:11,567 INFO L93 Difference]: Finished difference Result 26985 states and 44144 transitions. [2018-09-14 17:21:11,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:21:11,570 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2018-09-14 17:21:11,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:21:11,666 INFO L225 Difference]: With dead ends: 26985 [2018-09-14 17:21:11,667 INFO L226 Difference]: Without dead ends: 18143 [2018-09-14 17:21:11,699 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:21:11,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18143 states. [2018-09-14 17:21:12,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18143 to 17975. [2018-09-14 17:21:12,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17975 states. [2018-09-14 17:21:12,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17975 states to 17975 states and 26771 transitions. [2018-09-14 17:21:12,140 INFO L78 Accepts]: Start accepts. Automaton has 17975 states and 26771 transitions. Word has length 158 [2018-09-14 17:21:12,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:21:12,140 INFO L480 AbstractCegarLoop]: Abstraction has 17975 states and 26771 transitions. [2018-09-14 17:21:12,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:21:12,141 INFO L276 IsEmpty]: Start isEmpty. Operand 17975 states and 26771 transitions. [2018-09-14 17:21:12,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-09-14 17:21:12,152 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:21:12,152 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 17:21:12,153 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:21:12,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1738437273, now seen corresponding path program 1 times [2018-09-14 17:21:12,153 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:21:12,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:12,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:12,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:12,154 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:21:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:21:12,460 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:21:12,885 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 130 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:21:12,885 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:21:12,886 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 17:21:12,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:12,903 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:21:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:21:13,012 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:21:13,481 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-09-14 17:21:13,481 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:21:13,701 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 17:21:14,074 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 130 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:21:14,107 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:21:14,107 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 17:21:14,108 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:21:14,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:21:14,112 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:21:14,112 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:21:14,113 INFO L87 Difference]: Start difference. First operand 17975 states and 26771 transitions. Second operand 5 states. [2018-09-14 17:21:25,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:21:25,893 INFO L93 Difference]: Finished difference Result 59637 states and 95111 transitions. [2018-09-14 17:21:25,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:21:25,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 261 [2018-09-14 17:21:25,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:21:26,115 INFO L225 Difference]: With dead ends: 59637 [2018-09-14 17:21:26,115 INFO L226 Difference]: Without dead ends: 41668 [2018-09-14 17:21:26,223 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 517 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-09-14 17:21:26,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41668 states. [2018-09-14 17:21:27,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41668 to 41259. [2018-09-14 17:21:27,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41259 states. [2018-09-14 17:21:27,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41259 states to 41259 states and 59730 transitions. [2018-09-14 17:21:27,375 INFO L78 Accepts]: Start accepts. Automaton has 41259 states and 59730 transitions. Word has length 261 [2018-09-14 17:21:27,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:21:27,375 INFO L480 AbstractCegarLoop]: Abstraction has 41259 states and 59730 transitions. [2018-09-14 17:21:27,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:21:27,376 INFO L276 IsEmpty]: Start isEmpty. Operand 41259 states and 59730 transitions. [2018-09-14 17:21:27,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-09-14 17:21:27,413 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:21:27,413 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-09-14 17:21:27,414 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:21:27,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1680591689, now seen corresponding path program 1 times [2018-09-14 17:21:27,414 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:21:27,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:27,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:27,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:27,417 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:21:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:21:28,078 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 274 proven. 85 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-14 17:21:28,078 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:21:28,079 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 17:21:28,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:28,094 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:21:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:21:28,225 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:21:28,706 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 365 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-09-14 17:21:28,706 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:21:29,066 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 274 proven. 85 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-14 17:21:29,087 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:21:29,088 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 4 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:21:29,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:29,105 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:21:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:21:29,325 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:21:29,423 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 365 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-09-14 17:21:29,424 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:21:29,666 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 274 proven. 85 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-14 17:21:29,668 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:21:29,669 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 17:21:29,669 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:21:29,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:21:29,670 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:21:29,670 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:21:29,670 INFO L87 Difference]: Start difference. First operand 41259 states and 59730 transitions. Second operand 9 states. [2018-09-14 17:21:45,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:21:45,184 INFO L93 Difference]: Finished difference Result 93575 states and 149562 transitions. [2018-09-14 17:21:45,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-14 17:21:45,185 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 337 [2018-09-14 17:21:45,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:21:45,392 INFO L225 Difference]: With dead ends: 93575 [2018-09-14 17:21:45,392 INFO L226 Difference]: Without dead ends: 45296 [2018-09-14 17:21:45,503 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1364 GetRequests, 1344 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-09-14 17:21:45,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45296 states. [2018-09-14 17:21:46,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45296 to 42958. [2018-09-14 17:21:46,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42958 states. [2018-09-14 17:21:46,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42958 states to 42958 states and 61240 transitions. [2018-09-14 17:21:46,670 INFO L78 Accepts]: Start accepts. Automaton has 42958 states and 61240 transitions. Word has length 337 [2018-09-14 17:21:46,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:21:46,671 INFO L480 AbstractCegarLoop]: Abstraction has 42958 states and 61240 transitions. [2018-09-14 17:21:46,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:21:46,671 INFO L276 IsEmpty]: Start isEmpty. Operand 42958 states and 61240 transitions. [2018-09-14 17:21:46,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-09-14 17:21:46,705 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:21:46,705 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:21:46,705 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:21:46,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1310492895, now seen corresponding path program 1 times [2018-09-14 17:21:46,706 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:21:46,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:46,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:46,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:46,707 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:21:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:21:47,047 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 195 proven. 155 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-09-14 17:21:47,047 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:21:47,048 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 17:21:47,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:47,055 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:21:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:21:47,155 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:21:47,240 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2018-09-14 17:21:47,240 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:21:47,517 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 195 proven. 155 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-09-14 17:21:47,539 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:21:47,540 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-09-14 17:21:47,540 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:21:47,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:21:47,540 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:21:47,541 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:21:47,541 INFO L87 Difference]: Start difference. First operand 42958 states and 61240 transitions. Second operand 5 states. [2018-09-14 17:21:58,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:21:58,672 INFO L93 Difference]: Finished difference Result 131391 states and 203801 transitions. [2018-09-14 17:21:58,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:21:58,673 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 341 [2018-09-14 17:21:58,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:21:59,066 INFO L225 Difference]: With dead ends: 131391 [2018-09-14 17:21:59,066 INFO L226 Difference]: Without dead ends: 87658 [2018-09-14 17:21:59,242 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 691 GetRequests, 680 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:21:59,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87658 states. [2018-09-14 17:22:01,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87658 to 81652. [2018-09-14 17:22:01,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81652 states. [2018-09-14 17:22:01,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81652 states to 81652 states and 116130 transitions. [2018-09-14 17:22:01,776 INFO L78 Accepts]: Start accepts. Automaton has 81652 states and 116130 transitions. Word has length 341 [2018-09-14 17:22:01,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:22:01,776 INFO L480 AbstractCegarLoop]: Abstraction has 81652 states and 116130 transitions. [2018-09-14 17:22:01,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:22:01,777 INFO L276 IsEmpty]: Start isEmpty. Operand 81652 states and 116130 transitions. [2018-09-14 17:22:01,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-09-14 17:22:01,807 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:22:01,808 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:22:01,808 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:22:01,808 INFO L82 PathProgramCache]: Analyzing trace with hash 392559577, now seen corresponding path program 1 times [2018-09-14 17:22:01,809 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:22:01,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:01,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:01,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:01,810 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:22:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:02,173 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:22:02,526 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 130 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:22:02,526 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:22:02,526 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:22:02,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:02,536 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:22:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:02,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:22:03,154 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-09-14 17:22:03,155 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:22:03,941 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 130 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:22:03,962 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:22:03,962 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-14 17:22:03,962 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:22:03,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:22:03,963 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:22:03,963 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:22:03,964 INFO L87 Difference]: Start difference. First operand 81652 states and 116130 transitions. Second operand 5 states. [2018-09-14 17:22:12,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:22:12,444 INFO L93 Difference]: Finished difference Result 180501 states and 269651 transitions. [2018-09-14 17:22:12,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:22:12,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 357 [2018-09-14 17:22:12,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:22:12,802 INFO L225 Difference]: With dead ends: 180501 [2018-09-14 17:22:12,803 INFO L226 Difference]: Without dead ends: 98855 [2018-09-14 17:22:12,998 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 708 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:22:13,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98855 states. [2018-09-14 17:22:14,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98855 to 96408. [2018-09-14 17:22:14,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96408 states. [2018-09-14 17:22:14,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96408 states to 96408 states and 129172 transitions. [2018-09-14 17:22:14,951 INFO L78 Accepts]: Start accepts. Automaton has 96408 states and 129172 transitions. Word has length 357 [2018-09-14 17:22:14,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:22:14,951 INFO L480 AbstractCegarLoop]: Abstraction has 96408 states and 129172 transitions. [2018-09-14 17:22:14,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:22:14,952 INFO L276 IsEmpty]: Start isEmpty. Operand 96408 states and 129172 transitions. [2018-09-14 17:22:15,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2018-09-14 17:22:15,015 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:22:15,016 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:22:15,016 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:22:15,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1091137553, now seen corresponding path program 1 times [2018-09-14 17:22:15,017 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:22:15,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:15,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:15,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:15,018 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:22:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:16,389 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-09-14 17:22:16,390 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:22:16,390 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:22:16,390 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:22:16,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:22:16,391 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:22:16,391 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:22:16,391 INFO L87 Difference]: Start difference. First operand 96408 states and 129172 transitions. Second operand 3 states. [2018-09-14 17:22:23,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:22:23,674 INFO L93 Difference]: Finished difference Result 233318 states and 333083 transitions. [2018-09-14 17:22:23,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:22:23,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 455 [2018-09-14 17:22:23,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:22:24,132 INFO L225 Difference]: With dead ends: 233318 [2018-09-14 17:22:24,133 INFO L226 Difference]: Without dead ends: 136884 [2018-09-14 17:22:24,398 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:22:24,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136884 states. [2018-09-14 17:22:27,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136884 to 136861. [2018-09-14 17:22:27,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136861 states. [2018-09-14 17:22:28,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136861 states to 136861 states and 187636 transitions. [2018-09-14 17:22:28,030 INFO L78 Accepts]: Start accepts. Automaton has 136861 states and 187636 transitions. Word has length 455 [2018-09-14 17:22:28,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:22:28,031 INFO L480 AbstractCegarLoop]: Abstraction has 136861 states and 187636 transitions. [2018-09-14 17:22:28,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:22:28,031 INFO L276 IsEmpty]: Start isEmpty. Operand 136861 states and 187636 transitions. [2018-09-14 17:22:28,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2018-09-14 17:22:28,075 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:22:28,076 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:22:28,076 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:22:28,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1788868121, now seen corresponding path program 1 times [2018-09-14 17:22:28,076 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:22:28,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:28,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:28,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:28,078 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:22:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:28,512 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2018-09-14 17:22:28,512 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:22:28,513 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:22:28,513 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:22:28,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:22:28,514 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:22:28,514 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:22:28,514 INFO L87 Difference]: Start difference. First operand 136861 states and 187636 transitions. Second operand 3 states. [2018-09-14 17:22:37,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:22:37,073 INFO L93 Difference]: Finished difference Result 305077 states and 431781 transitions. [2018-09-14 17:22:37,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:22:37,073 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 491 [2018-09-14 17:22:37,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:22:37,723 INFO L225 Difference]: With dead ends: 305077 [2018-09-14 17:22:37,724 INFO L226 Difference]: Without dead ends: 168990 [2018-09-14 17:22:38,152 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:22:39,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168990 states. [2018-09-14 17:22:48,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168990 to 162741. [2018-09-14 17:22:48,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162741 states. [2018-09-14 17:22:48,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162741 states to 162741 states and 220389 transitions. [2018-09-14 17:22:48,915 INFO L78 Accepts]: Start accepts. Automaton has 162741 states and 220389 transitions. Word has length 491 [2018-09-14 17:22:48,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:22:48,916 INFO L480 AbstractCegarLoop]: Abstraction has 162741 states and 220389 transitions. [2018-09-14 17:22:48,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:22:48,916 INFO L276 IsEmpty]: Start isEmpty. Operand 162741 states and 220389 transitions. [2018-09-14 17:22:49,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2018-09-14 17:22:49,062 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:22:49,062 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:22:49,063 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:22:49,063 INFO L82 PathProgramCache]: Analyzing trace with hash 582967242, now seen corresponding path program 1 times [2018-09-14 17:22:49,063 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:22:49,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:49,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:49,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:49,064 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:22:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:50,495 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2018-09-14 17:22:50,495 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:22:50,495 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:22:50,496 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:22:50,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:22:50,500 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:22:50,500 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:22:50,500 INFO L87 Difference]: Start difference. First operand 162741 states and 220389 transitions. Second operand 4 states. [2018-09-14 17:23:03,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:23:03,023 INFO L93 Difference]: Finished difference Result 374112 states and 530047 transitions. [2018-09-14 17:23:03,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:23:03,024 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 686 [2018-09-14 17:23:03,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:23:03,028 INFO L225 Difference]: With dead ends: 374112 [2018-09-14 17:23:03,028 INFO L226 Difference]: Without dead ends: 0 [2018-09-14 17:23:03,682 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 17:23:03,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-14 17:23:03,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-14 17:23:03,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-14 17:23:03,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-14 17:23:03,684 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 686 [2018-09-14 17:23:03,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:23:03,685 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-14 17:23:03,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:23:03,685 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-14 17:23:03,685 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-14 17:23:03,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-14 17:23:06,047 WARN L178 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-09-14 17:23:07,879 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:07,899 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:08,027 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:08,030 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:08,036 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:08,062 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:09,142 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:09,165 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:09,265 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:09,358 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:09,431 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:09,574 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:09,664 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:09,724 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:09,750 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:09,975 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:10,002 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:10,307 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:11,205 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:11,615 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:11,802 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:11,841 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:12,310 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:12,793 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:12,875 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:12,944 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:13,006 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:13,195 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:13,500 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:13,576 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:13,848 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:13,970 WARN L178 SmtUtils]: Spent 6.14 s on a formula simplification. DAG size of input: 1013 DAG size of output: 781 [2018-09-14 17:23:14,015 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:14,023 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:14,093 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:14,095 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:14,099 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:14,114 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:14,692 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:14,705 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:14,791 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:14,856 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:14,908 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:15,026 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:15,101 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:15,167 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:15,196 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:15,422 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:15,454 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:15,776 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:16,731 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:17,103 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:17,291 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:17,330 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:17,792 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:18,304 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:18,384 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:18,451 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:18,511 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:18,686 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:18,986 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:19,072 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:19,301 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:23:19,421 WARN L178 SmtUtils]: Spent 5.45 s on a formula simplification. DAG size of input: 1013 DAG size of output: 781 [2018-09-14 17:23:23,382 WARN L178 SmtUtils]: Spent 3.92 s on a formula simplification. DAG size of input: 677 DAG size of output: 65 [2018-09-14 17:23:27,126 WARN L178 SmtUtils]: Spent 3.69 s on a formula simplification. DAG size of input: 635 DAG size of output: 65 [2018-09-14 17:23:31,107 WARN L178 SmtUtils]: Spent 3.95 s on a formula simplification. DAG size of input: 677 DAG size of output: 65 [2018-09-14 17:23:35,046 WARN L178 SmtUtils]: Spent 3.90 s on a formula simplification. DAG size of input: 677 DAG size of output: 65 [2018-09-14 17:23:38,917 WARN L178 SmtUtils]: Spent 3.84 s on a formula simplification. DAG size of input: 677 DAG size of output: 65 [2018-09-14 17:23:43,173 WARN L178 SmtUtils]: Spent 4.20 s on a formula simplification. DAG size of input: 639 DAG size of output: 74 Received shutdown request... [2018-09-14 17:23:43,961 WARN L186 SmtUtils]: Removed 266 from assertion stack [2018-09-14 17:23:43,961 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-09-14 17:23:43,963 INFO L168 Benchmark]: Toolchain (without parser) took 218944.18 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.7 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-09-14 17:23:43,964 INFO L168 Benchmark]: CDTParser took 0.19 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 17:23:43,964 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2311.72 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-14 17:23:43,965 INFO L168 Benchmark]: Boogie Procedure Inliner took 269.63 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: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. [2018-09-14 17:23:43,966 INFO L168 Benchmark]: Boogie Preprocessor took 919.45 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 938.0 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 17:23:43,967 INFO L168 Benchmark]: RCFGBuilder took 10936.94 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: 649.4 MB). Peak memory consumption was 649.4 MB. Max. memory is 7.1 GB. [2018-09-14 17:23:43,968 INFO L168 Benchmark]: TraceAbstraction took 204497.37 ms. Allocated memory was 2.5 GB in the beginning and 4.9 GB in the end (delta: 2.4 GB). Free memory was 1.7 GB in the beginning and 3.2 GB in the end (delta: -1.5 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-09-14 17:23:43,973 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 2311.72 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 269.63 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: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 919.45 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 938.0 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 10936.94 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: 649.4 MB). Peak memory consumption was 649.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204497.37 ms. Allocated memory was 2.5 GB in the beginning and 4.9 GB in the end (delta: 2.4 GB). Free memory was 1.7 GB in the beginning and 3.2 GB in the end (delta: -1.5 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 207]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 677. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label16_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-23-43-988.csv Completed graceful shutdown