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/Problem11_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:17:05,976 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:17:05,978 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:17:05,995 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:17:05,996 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:17:05,997 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:17:05,998 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:17:06,001 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:17:06,004 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:17:06,005 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:17:06,013 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:17:06,013 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:17:06,016 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:17:06,018 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:17:06,019 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:17:06,022 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:17:06,023 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:17:06,027 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:17:06,032 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:17:06,035 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:17:06,038 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:17:06,040 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:17:06,045 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:17:06,045 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:17:06,046 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:17:06,048 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:17:06,050 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:17:06,051 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:17:06,052 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:17:06,053 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:17:06,053 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:17:06,054 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:17:06,054 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:17:06,054 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:17:06,055 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:17:06,058 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:17:06,058 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 17:17:06,083 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:17:06,084 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:17:06,085 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:17:06,085 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:17:06,085 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:17:06,086 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:17:06,086 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:17:06,086 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:17:06,086 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:17:06,087 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:17:06,087 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:17:06,088 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:17:06,088 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:17:06,089 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:17:06,089 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:17:06,089 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:17:06,090 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:17:06,090 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:17:06,090 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:17:06,090 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:17:06,091 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:17:06,091 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:17:06,091 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:17:06,093 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:17:06,093 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:17:06,093 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:17:06,094 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:17:06,094 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:17:06,094 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:17:06,095 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:17:06,095 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:17:06,095 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:17:06,095 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:17:06,149 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:17:06,163 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:17:06,170 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:17:06,172 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:17:06,173 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:17:06,174 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label56_true-unreach-call.c [2018-09-14 17:17:06,553 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e27b00716/6db5757fbe4f4bff8cf4e006547e2792/FLAGe103653c2 [2018-09-14 17:17:06,861 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:17:06,862 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label56_true-unreach-call.c [2018-09-14 17:17:06,880 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e27b00716/6db5757fbe4f4bff8cf4e006547e2792/FLAGe103653c2 [2018-09-14 17:17:06,901 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e27b00716/6db5757fbe4f4bff8cf4e006547e2792 [2018-09-14 17:17:06,914 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:17:06,917 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:17:06,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:17:06,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:17:06,927 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:17:06,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:17:06" (1/1) ... [2018-09-14 17:17:06,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f755aa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:17:06, skipping insertion in model container [2018-09-14 17:17:06,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:17:06" (1/1) ... [2018-09-14 17:17:06,944 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:17:07,580 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:17:07,607 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:17:07,741 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:17:07,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:17:07 WrapperNode [2018-09-14 17:17:07,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:17:07,835 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:17:07,835 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:17:07,835 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:17:07,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:17:07" (1/1) ... [2018-09-14 17:17:07,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:17:07" (1/1) ... [2018-09-14 17:17:07,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:17:07,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:17:07,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:17:07,985 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:17:08,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:17:07" (1/1) ... [2018-09-14 17:17:08,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:17:07" (1/1) ... [2018-09-14 17:17:08,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:17:07" (1/1) ... [2018-09-14 17:17:08,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:17:07" (1/1) ... [2018-09-14 17:17:08,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:17:07" (1/1) ... [2018-09-14 17:17:08,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:17:07" (1/1) ... [2018-09-14 17:17:08,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:17:07" (1/1) ... [2018-09-14 17:17:08,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:17:08,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:17:08,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:17:08,357 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:17:08,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:17:07" (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 17:17:08,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:17:08,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:17:08,432 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:17:08,433 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:17:08,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:17:08,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:17:08,433 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:17:08,433 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:17:13,354 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:17:13,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:17:13 BoogieIcfgContainer [2018-09-14 17:17:13,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:17:13,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:17:13,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:17:13,360 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:17:13,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:17:06" (1/3) ... [2018-09-14 17:17:13,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d82e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:17:13, skipping insertion in model container [2018-09-14 17:17:13,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:17:07" (2/3) ... [2018-09-14 17:17:13,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d82e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:17:13, skipping insertion in model container [2018-09-14 17:17:13,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:17:13" (3/3) ... [2018-09-14 17:17:13,364 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label56_true-unreach-call.c [2018-09-14 17:17:13,375 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:17:13,384 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:17:13,439 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:17:13,440 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:17:13,441 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:17:13,441 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:17:13,441 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:17:13,441 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:17:13,442 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:17:13,442 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:17:13,442 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:17:13,472 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-09-14 17:17:13,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-14 17:17:13,482 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:17:13,483 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] [2018-09-14 17:17:13,485 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:17:13,490 INFO L82 PathProgramCache]: Analyzing trace with hash -822687572, now seen corresponding path program 1 times [2018-09-14 17:17:13,493 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:17:13,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:17:13,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:17:13,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:17:13,543 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:17:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:17:14,027 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 17:17:14,030 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:17:14,030 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:17:14,030 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:17:14,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:17:14,052 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:17:14,053 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:17:14,056 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-09-14 17:17:16,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:17:16,412 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-09-14 17:17:16,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:17:16,416 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-09-14 17:17:16,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:17:16,435 INFO L225 Difference]: With dead ends: 782 [2018-09-14 17:17:16,435 INFO L226 Difference]: Without dead ends: 487 [2018-09-14 17:17:16,444 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:17:16,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-09-14 17:17:16,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-09-14 17:17:16,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-09-14 17:17:16,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 843 transitions. [2018-09-14 17:17:16,545 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 843 transitions. Word has length 48 [2018-09-14 17:17:16,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:17:16,546 INFO L480 AbstractCegarLoop]: Abstraction has 482 states and 843 transitions. [2018-09-14 17:17:16,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:17:16,546 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 843 transitions. [2018-09-14 17:17:16,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-09-14 17:17:16,556 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:17:16,556 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:17:16,557 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:17:16,557 INFO L82 PathProgramCache]: Analyzing trace with hash -191480489, now seen corresponding path program 1 times [2018-09-14 17:17:16,557 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:17:16,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:17:16,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:17:16,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:17:16,559 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:17:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:17:17,406 WARN L178 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-09-14 17:17:17,521 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:17:17,521 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:17:17,522 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-14 17:17:17,522 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:17:17,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 17:17:17,524 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 17:17:17,525 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-14 17:17:17,525 INFO L87 Difference]: Start difference. First operand 482 states and 843 transitions. Second operand 7 states. [2018-09-14 17:17:25,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:17:25,044 INFO L93 Difference]: Finished difference Result 1760 states and 3239 transitions. [2018-09-14 17:17:25,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-14 17:17:25,045 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2018-09-14 17:17:25,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:17:25,064 INFO L225 Difference]: With dead ends: 1760 [2018-09-14 17:17:25,065 INFO L226 Difference]: Without dead ends: 1284 [2018-09-14 17:17:25,071 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:17:25,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2018-09-14 17:17:25,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1037. [2018-09-14 17:17:25,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2018-09-14 17:17:25,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1685 transitions. [2018-09-14 17:17:25,181 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1685 transitions. Word has length 123 [2018-09-14 17:17:25,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:17:25,181 INFO L480 AbstractCegarLoop]: Abstraction has 1037 states and 1685 transitions. [2018-09-14 17:17:25,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 17:17:25,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1685 transitions. [2018-09-14 17:17:25,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-09-14 17:17:25,195 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:17:25,195 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:17:25,195 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:17:25,196 INFO L82 PathProgramCache]: Analyzing trace with hash -259626392, now seen corresponding path program 1 times [2018-09-14 17:17:25,196 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:17:25,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:17:25,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:17:25,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:17:25,198 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:17:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:17:25,496 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 82 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:17:25,496 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:17:25,496 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 17:17:25,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:17:25,511 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:17:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:17:25,643 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:17:26,108 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-09-14 17:17:26,109 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:17:26,821 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 82 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:17:26,856 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:17:26,856 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 17:17:26,857 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:17:26,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:17:26,859 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:17:26,859 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:17:26,860 INFO L87 Difference]: Start difference. First operand 1037 states and 1685 transitions. Second operand 5 states. [2018-09-14 17:17:32,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:17:32,626 INFO L93 Difference]: Finished difference Result 3395 states and 5619 transitions. [2018-09-14 17:17:32,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:17:32,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2018-09-14 17:17:32,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:17:32,644 INFO L225 Difference]: With dead ends: 3395 [2018-09-14 17:17:32,644 INFO L226 Difference]: Without dead ends: 2364 [2018-09-14 17:17:32,651 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 387 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-09-14 17:17:32,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2364 states. [2018-09-14 17:17:32,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2364 to 2323. [2018-09-14 17:17:32,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2323 states. [2018-09-14 17:17:32,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 3627 transitions. [2018-09-14 17:17:32,730 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 3627 transitions. Word has length 196 [2018-09-14 17:17:32,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:17:32,730 INFO L480 AbstractCegarLoop]: Abstraction has 2323 states and 3627 transitions. [2018-09-14 17:17:32,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:17:32,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 3627 transitions. [2018-09-14 17:17:32,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-09-14 17:17:32,738 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:17:32,738 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:17:32,739 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:17:32,739 INFO L82 PathProgramCache]: Analyzing trace with hash 188115406, now seen corresponding path program 1 times [2018-09-14 17:17:32,739 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:17:32,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:17:32,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:17:32,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:17:32,741 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:17:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:17:33,542 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 17:17:33,543 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:17:33,543 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 17:17:33,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:17:33,563 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:17:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:17:33,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:17:35,959 WARN L1001 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_24 Int)) (let ((.cse0 (div v_prenex_24 5))) (let ((.cse1 (mod .cse0 90))) (and (< .cse0 0) (<= |c_old(~a23~0)| v_prenex_24) (= 0 (mod v_prenex_24 5)) (= (mod (+ .cse0 1) 90) 0) (<= (+ c_~a23~0 41) .cse1) (not (= 0 .cse1)))))) (exists ((v_prenex_18 Int)) (let ((.cse3 (div v_prenex_18 5))) (let ((.cse2 (+ .cse3 1))) (and (<= c_~a23~0 (+ (mod .cse2 90) 49)) (<= 0 .cse2) (< v_prenex_18 0) (<= |c_old(~a23~0)| v_prenex_18) (not (= 0 (mod v_prenex_18 5))) (<= 0 .cse3))))) (exists ((v_prenex_13 Int)) (let ((.cse5 (div v_prenex_13 5))) (let ((.cse4 (mod .cse5 90))) (and (= 0 .cse4) (<= |c_old(~a23~0)| v_prenex_13) (= 0 (mod v_prenex_13 5)) (<= 0 (+ .cse5 1)) (<= c_~a23~0 (+ .cse4 49)))))) (exists ((v_prenex_8 Int)) (let ((.cse6 (div v_prenex_8 5))) (and (<= 0 v_prenex_8) (= (mod (+ .cse6 1) 90) 0) (<= 0 .cse6) (<= |c_old(~a23~0)| v_prenex_8) (<= c_~a23~0 (+ (mod .cse6 90) 49))))) (exists ((v_prenex_17 Int)) (let ((.cse9 (div v_prenex_17 5))) (let ((.cse8 (+ .cse9 1))) (let ((.cse7 (mod .cse8 90))) (and (< v_prenex_17 0) (<= (+ c_~a23~0 41) .cse7) (< .cse8 0) (<= |c_old(~a23~0)| v_prenex_17) (not (= 0 (mod v_prenex_17 5))) (= 0 (mod .cse9 90)) (not (= .cse7 0))))))) (exists ((v_prenex_4 Int)) (let ((.cse11 (div v_prenex_4 5))) (let ((.cse10 (mod (+ .cse11 1) 90))) (and (= .cse10 0) (< v_prenex_4 0) (<= c_~a23~0 (+ .cse10 49)) (= 0 (mod .cse11 90)) (not (= 0 (mod v_prenex_4 5))) (<= |c_old(~a23~0)| v_prenex_4))))) (exists ((v_prenex_26 Int)) (let ((.cse12 (div v_prenex_26 5))) (let ((.cse13 (mod .cse12 90))) (and (<= |c_old(~a23~0)| v_prenex_26) (<= 0 (+ .cse12 1)) (<= 0 v_prenex_26) (= 0 .cse13) (<= c_~a23~0 (+ .cse13 49)))))) (exists ((v_prenex_3 Int)) (let ((.cse14 (div v_prenex_3 5))) (let ((.cse15 (+ .cse14 1))) (and (<= c_~a23~0 (+ (mod .cse14 90) 49)) (<= 0 v_prenex_3) (<= 0 .cse14) (not (= (mod .cse15 90) 0)) (<= |c_old(~a23~0)| v_prenex_3) (< .cse15 0))))) (exists ((v_prenex_6 Int)) (let ((.cse17 (div v_prenex_6 5))) (let ((.cse16 (mod .cse17 90))) (and (= 0 .cse16) (<= c_~a23~0 (+ .cse16 49)) (= (mod (+ .cse17 1) 90) 0) (<= |c_old(~a23~0)| v_prenex_6) (<= 0 v_prenex_6))))) (exists ((v_prenex_11 Int)) (let ((.cse18 (div v_prenex_11 5))) (let ((.cse19 (mod .cse18 90)) (.cse20 (+ .cse18 1))) (and (< .cse18 0) (<= (+ c_~a23~0 41) .cse19) (not (= 0 .cse19)) (<= |c_old(~a23~0)| v_prenex_11) (<= 0 v_prenex_11) (not (= (mod .cse20 90) 0)) (< .cse20 0))))) (exists ((v_prenex_14 Int)) (let ((.cse22 (div v_prenex_14 5))) (let ((.cse21 (mod .cse22 90))) (and (<= (+ c_~a23~0 41) .cse21) (<= |c_old(~a23~0)| v_prenex_14) (<= 0 (+ .cse22 1)) (not (= 0 .cse21)) (< .cse22 0) (<= 0 v_prenex_14))))) (exists ((v_~a23~0_492 Int)) (let ((.cse24 (div v_~a23~0_492 5))) (let ((.cse23 (+ .cse24 1))) (let ((.cse25 (mod .cse23 90))) (and (< .cse23 0) (<= 0 .cse24) (< v_~a23~0_492 0) (<= |c_old(~a23~0)| v_~a23~0_492) (<= (+ c_~a23~0 41) .cse25) (not (= .cse25 0)) (not (= 0 (mod v_~a23~0_492 5)))))))) (exists ((v_prenex_19 Int)) (let ((.cse26 (div v_prenex_19 5))) (let ((.cse27 (mod .cse26 90)) (.cse28 (+ .cse26 1))) (and (< .cse26 0) (not (= 0 .cse27)) (<= (+ c_~a23~0 41) .cse27) (= 0 (mod v_prenex_19 5)) (< .cse28 0) (not (= (mod .cse28 90) 0)) (<= |c_old(~a23~0)| v_prenex_19))))) (exists ((v_prenex_22 Int)) (let ((.cse29 (div v_prenex_22 5))) (and (<= |c_old(~a23~0)| v_prenex_22) (<= 0 .cse29) (<= 0 (+ .cse29 1)) (<= 0 v_prenex_22) (<= c_~a23~0 (+ (mod .cse29 90) 49))))) (exists ((v_prenex_5 Int)) (let ((.cse31 (div v_prenex_5 5))) (let ((.cse30 (mod .cse31 90))) (and (<= (+ c_~a23~0 41) .cse30) (< .cse31 0) (<= 0 v_prenex_5) (= (mod (+ .cse31 1) 90) 0) (<= |c_old(~a23~0)| v_prenex_5) (not (= 0 .cse30)))))) (exists ((v_prenex_20 Int)) (let ((.cse33 (div v_prenex_20 5))) (let ((.cse32 (+ .cse33 1))) (and (<= c_~a23~0 (+ (mod .cse32 90) 49)) (< v_prenex_20 0) (<= |c_old(~a23~0)| v_prenex_20) (not (= 0 (mod v_prenex_20 5))) (= 0 (mod .cse33 90)) (<= 0 .cse32))))) (exists ((v_prenex_15 Int)) (let ((.cse34 (div v_prenex_15 5))) (let ((.cse35 (+ .cse34 1))) (and (<= 0 .cse34) (<= c_~a23~0 (+ (mod .cse34 90) 49)) (<= |c_old(~a23~0)| v_prenex_15) (< .cse35 0) (= 0 (mod v_prenex_15 5)) (not (= (mod .cse35 90) 0)))))) (exists ((v_prenex_16 Int)) (let ((.cse37 (div v_prenex_16 5))) (let ((.cse36 (mod .cse37 90))) (and (<= |c_old(~a23~0)| v_prenex_16) (<= c_~a23~0 (+ .cse36 49)) (= 0 (mod v_prenex_16 5)) (= (mod (+ .cse37 1) 90) 0) (= 0 .cse36))))) (exists ((v_prenex_23 Int)) (let ((.cse39 (div v_prenex_23 5))) (let ((.cse38 (mod .cse39 90))) (and (not (= 0 .cse38)) (<= |c_old(~a23~0)| v_prenex_23) (<= (+ c_~a23~0 41) .cse38) (= 0 (mod v_prenex_23 5)) (< .cse39 0) (<= 0 (+ .cse39 1)))))) (exists ((v_prenex_9 Int)) (let ((.cse41 (div v_prenex_9 5))) (let ((.cse40 (mod (+ .cse41 1) 90))) (and (<= |c_old(~a23~0)| v_prenex_9) (= .cse40 0) (< v_prenex_9 0) (< .cse41 0) (<= c_~a23~0 (+ .cse40 49)) (not (= 0 (mod .cse41 90))) (not (= 0 (mod v_prenex_9 5))))))) (exists ((v_prenex_7 Int)) (let ((.cse44 (div v_prenex_7 5))) (let ((.cse42 (+ .cse44 1)) (.cse43 (mod .cse44 90))) (and (= 0 (mod v_prenex_7 5)) (not (= (mod .cse42 90) 0)) (= 0 .cse43) (< .cse42 0) (<= |c_old(~a23~0)| v_prenex_7) (<= c_~a23~0 (+ .cse43 49)))))) (exists ((v_prenex_1 Int)) (let ((.cse45 (div v_prenex_1 5))) (and (<= 0 (+ .cse45 1)) (<= c_~a23~0 (+ (mod .cse45 90) 49)) (= 0 (mod v_prenex_1 5)) (<= 0 .cse45) (<= |c_old(~a23~0)| v_prenex_1)))) (exists ((v_prenex_2 Int)) (let ((.cse46 (div v_prenex_2 5))) (let ((.cse48 (+ .cse46 1))) (let ((.cse47 (mod .cse48 90))) (and (not (= 0 (mod .cse46 90))) (<= |c_old(~a23~0)| v_prenex_2) (not (= .cse47 0)) (<= (+ c_~a23~0 41) .cse47) (< v_prenex_2 0) (< .cse48 0) (< .cse46 0) (not (= 0 (mod v_prenex_2 5)))))))) (exists ((v_prenex_10 Int)) (let ((.cse51 (div v_prenex_10 5))) (let ((.cse50 (+ .cse51 1)) (.cse49 (mod .cse51 90))) (and (= 0 .cse49) (<= 0 v_prenex_10) (not (= (mod .cse50 90) 0)) (< .cse50 0) (<= c_~a23~0 (+ .cse49 49)) (<= |c_old(~a23~0)| v_prenex_10))))) (exists ((v_prenex_25 Int)) (let ((.cse53 (div v_prenex_25 5))) (let ((.cse52 (mod (+ .cse53 1) 90))) (and (not (= 0 (mod v_prenex_25 5))) (< v_prenex_25 0) (<= c_~a23~0 (+ .cse52 49)) (<= |c_old(~a23~0)| v_prenex_25) (<= 0 .cse53) (= .cse52 0))))) (exists ((v_prenex_12 Int)) (let ((.cse54 (div v_prenex_12 5))) (let ((.cse55 (+ .cse54 1))) (and (<= |c_old(~a23~0)| v_prenex_12) (< .cse54 0) (<= 0 .cse55) (<= c_~a23~0 (+ (mod .cse55 90) 49)) (not (= 0 (mod v_prenex_12 5))) (not (= 0 (mod .cse54 90))) (< v_prenex_12 0))))) (exists ((v_prenex_21 Int)) (let ((.cse56 (div v_prenex_21 5))) (and (<= 0 .cse56) (= (mod (+ .cse56 1) 90) 0) (= 0 (mod v_prenex_21 5)) (<= |c_old(~a23~0)| v_prenex_21) (<= c_~a23~0 (+ (mod .cse56 90) 49)))))) is different from true [2018-09-14 17:17:36,470 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 72 trivial. 2 not checked. [2018-09-14 17:17:36,470 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:17:37,192 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 17:17:37,227 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:17:37,227 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 6] total 8 [2018-09-14 17:17:37,227 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:17:37,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:17:37,228 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:17:37,228 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2018-09-14 17:17:37,229 INFO L87 Difference]: Start difference. First operand 2323 states and 3627 transitions. Second operand 3 states. [2018-09-14 17:17:39,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:17:39,011 INFO L93 Difference]: Finished difference Result 6306 states and 10212 transitions. [2018-09-14 17:17:39,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:17:39,019 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2018-09-14 17:17:39,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:17:39,046 INFO L225 Difference]: With dead ends: 6306 [2018-09-14 17:17:39,046 INFO L226 Difference]: Without dead ends: 3989 [2018-09-14 17:17:39,064 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 479 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2018-09-14 17:17:39,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3989 states. [2018-09-14 17:17:39,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3989 to 3955. [2018-09-14 17:17:39,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3955 states. [2018-09-14 17:17:39,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3955 states to 3955 states and 6081 transitions. [2018-09-14 17:17:39,174 INFO L78 Accepts]: Start accepts. Automaton has 3955 states and 6081 transitions. Word has length 240 [2018-09-14 17:17:39,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:17:39,175 INFO L480 AbstractCegarLoop]: Abstraction has 3955 states and 6081 transitions. [2018-09-14 17:17:39,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:17:39,176 INFO L276 IsEmpty]: Start isEmpty. Operand 3955 states and 6081 transitions. [2018-09-14 17:17:39,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-09-14 17:17:39,187 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:17:39,188 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:17:39,188 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:17:39,188 INFO L82 PathProgramCache]: Analyzing trace with hash 764806318, now seen corresponding path program 1 times [2018-09-14 17:17:39,188 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:17:39,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:17:39,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:17:39,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:17:39,190 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:17:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:17:39,758 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:17:39,758 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:17:39,758 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:17:39,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:17:39,772 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:17:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:17:39,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:17:40,381 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-09-14 17:17:40,381 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:17:41,137 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-09-14 17:17:41,158 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:17:41,158 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 17:17:41,158 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:17:41,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:17:41,159 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:17:41,159 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:17:41,160 INFO L87 Difference]: Start difference. First operand 3955 states and 6081 transitions. Second operand 5 states. [2018-09-14 17:17:43,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:17:43,808 INFO L93 Difference]: Finished difference Result 10588 states and 16598 transitions. [2018-09-14 17:17:43,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:17:43,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 256 [2018-09-14 17:17:43,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:17:43,860 INFO L225 Difference]: With dead ends: 10588 [2018-09-14 17:17:43,860 INFO L226 Difference]: Without dead ends: 6639 [2018-09-14 17:17:43,890 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 506 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:17:43,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2018-09-14 17:17:44,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 6588. [2018-09-14 17:17:44,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6588 states. [2018-09-14 17:17:44,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6588 states to 6588 states and 9121 transitions. [2018-09-14 17:17:44,085 INFO L78 Accepts]: Start accepts. Automaton has 6588 states and 9121 transitions. Word has length 256 [2018-09-14 17:17:44,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:17:44,085 INFO L480 AbstractCegarLoop]: Abstraction has 6588 states and 9121 transitions. [2018-09-14 17:17:44,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:17:44,086 INFO L276 IsEmpty]: Start isEmpty. Operand 6588 states and 9121 transitions. [2018-09-14 17:17:44,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-09-14 17:17:44,110 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:17:44,111 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:17:44,111 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:17:44,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1316171772, now seen corresponding path program 1 times [2018-09-14 17:17:44,112 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:17:44,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:17:44,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:17:44,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:17:44,114 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:17:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:17:44,489 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-09-14 17:17:44,489 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:17:44,490 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:17:44,490 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:17:44,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:17:44,495 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:17:44,495 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:17:44,495 INFO L87 Difference]: Start difference. First operand 6588 states and 9121 transitions. Second operand 4 states. [2018-09-14 17:17:47,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:17:47,248 INFO L93 Difference]: Finished difference Result 22722 states and 33555 transitions. [2018-09-14 17:17:47,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:17:47,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 271 [2018-09-14 17:17:47,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:17:47,351 INFO L225 Difference]: With dead ends: 22722 [2018-09-14 17:17:47,351 INFO L226 Difference]: Without dead ends: 16140 [2018-09-14 17:17:47,423 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 17:17:47,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16140 states. [2018-09-14 17:17:47,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16140 to 15912. [2018-09-14 17:17:47,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15912 states. [2018-09-14 17:17:48,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15912 states to 15912 states and 22198 transitions. [2018-09-14 17:17:48,010 INFO L78 Accepts]: Start accepts. Automaton has 15912 states and 22198 transitions. Word has length 271 [2018-09-14 17:17:48,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:17:48,010 INFO L480 AbstractCegarLoop]: Abstraction has 15912 states and 22198 transitions. [2018-09-14 17:17:48,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:17:48,011 INFO L276 IsEmpty]: Start isEmpty. Operand 15912 states and 22198 transitions. [2018-09-14 17:17:48,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-09-14 17:17:48,076 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:17:48,077 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:17:48,077 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:17:48,077 INFO L82 PathProgramCache]: Analyzing trace with hash 385643921, now seen corresponding path program 1 times [2018-09-14 17:17:48,078 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:17:48,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:17:48,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:17:48,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:17:48,079 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:17:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:17:48,710 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 87 proven. 101 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-09-14 17:17:48,711 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:17:48,711 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 17:17:48,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:17:48,720 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:17:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:17:48,819 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:17:54,134 WARN L178 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2018-09-14 17:17:54,308 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-09-14 17:17:54,308 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:17:54,658 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:17:54,679 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:17:54,679 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:17:54,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:17:54,696 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:17:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:17:54,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:17:56,731 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 83 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:17:56,732 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:17:56,944 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:17:56,946 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:17:56,947 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 5, 8, 5] total 15 [2018-09-14 17:17:56,947 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:17:56,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-14 17:17:56,948 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-14 17:17:56,948 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=147, Unknown=3, NotChecked=0, Total=210 [2018-09-14 17:17:56,948 INFO L87 Difference]: Start difference. First operand 15912 states and 22198 transitions. Second operand 10 states. [2018-09-14 17:18:05,408 WARN L178 SmtUtils]: Spent 3.93 s on a formula simplification. DAG size of input: 27 DAG size of output: 13 [2018-09-14 17:18:45,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:18:45,637 INFO L93 Difference]: Finished difference Result 45562 states and 71246 transitions. [2018-09-14 17:18:45,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-14 17:18:45,637 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 289 [2018-09-14 17:18:45,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:18:45,841 INFO L225 Difference]: With dead ends: 45562 [2018-09-14 17:18:45,842 INFO L226 Difference]: Without dead ends: 29656 [2018-09-14 17:18:45,950 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1181 GetRequests, 1145 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=232, Invalid=634, Unknown=4, NotChecked=0, Total=870 [2018-09-14 17:18:45,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29656 states. [2018-09-14 17:18:46,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29656 to 28306. [2018-09-14 17:18:46,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28306 states. [2018-09-14 17:18:47,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28306 states to 28306 states and 41878 transitions. [2018-09-14 17:18:47,028 INFO L78 Accepts]: Start accepts. Automaton has 28306 states and 41878 transitions. Word has length 289 [2018-09-14 17:18:47,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:18:47,029 INFO L480 AbstractCegarLoop]: Abstraction has 28306 states and 41878 transitions. [2018-09-14 17:18:47,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-14 17:18:47,029 INFO L276 IsEmpty]: Start isEmpty. Operand 28306 states and 41878 transitions. [2018-09-14 17:18:47,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-09-14 17:18:47,092 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:18:47,092 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:18:47,092 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:18:47,093 INFO L82 PathProgramCache]: Analyzing trace with hash -17305994, now seen corresponding path program 1 times [2018-09-14 17:18:47,093 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:18:47,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:18:47,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:18:47,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:18:47,094 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:18:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:18:47,869 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-14 17:18:47,870 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:18:47,870 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:18:47,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:18:47,881 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:18:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:18:47,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:18:48,200 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:18:48,200 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:18:48,489 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:18:48,522 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:18:48,522 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 8 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:18:48,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:18:48,551 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:18:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:18:48,772 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:18:48,872 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:18:48,873 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:18:49,038 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:18:49,040 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:18:49,040 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 15 [2018-09-14 17:18:49,040 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:18:49,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-14 17:18:49,042 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-14 17:18:49,042 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2018-09-14 17:18:49,043 INFO L87 Difference]: Start difference. First operand 28306 states and 41878 transitions. Second operand 8 states. [2018-09-14 17:18:59,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:18:59,387 INFO L93 Difference]: Finished difference Result 63207 states and 131634 transitions. [2018-09-14 17:18:59,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-14 17:18:59,388 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 303 [2018-09-14 17:18:59,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:18:59,826 INFO L225 Difference]: With dead ends: 63207 [2018-09-14 17:18:59,827 INFO L226 Difference]: Without dead ends: 35096 [2018-09-14 17:19:00,223 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1275 GetRequests, 1224 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=480, Invalid=2070, Unknown=0, NotChecked=0, Total=2550 [2018-09-14 17:19:00,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35096 states. [2018-09-14 17:19:01,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35096 to 32420. [2018-09-14 17:19:01,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32420 states. [2018-09-14 17:19:01,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32420 states to 32420 states and 47400 transitions. [2018-09-14 17:19:01,983 INFO L78 Accepts]: Start accepts. Automaton has 32420 states and 47400 transitions. Word has length 303 [2018-09-14 17:19:01,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:19:01,983 INFO L480 AbstractCegarLoop]: Abstraction has 32420 states and 47400 transitions. [2018-09-14 17:19:01,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-14 17:19:01,983 INFO L276 IsEmpty]: Start isEmpty. Operand 32420 states and 47400 transitions. [2018-09-14 17:19:02,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-09-14 17:19:02,109 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:19:02,109 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:19:02,110 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:19:02,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1725009270, now seen corresponding path program 1 times [2018-09-14 17:19:02,110 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:19:02,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:19:02,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:19:02,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:19:02,111 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:19:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:19:02,349 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 123 proven. 4 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2018-09-14 17:19:02,349 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:19:02,349 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-09-14 17:19:02,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:19:02,362 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:19:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:19:02,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:19:02,601 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-09-14 17:19:02,602 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:19:02,732 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 123 proven. 4 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2018-09-14 17:19:02,753 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:19:02,753 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 3 [2018-09-14 17:19:02,754 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:19:02,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:19:02,754 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:19:02,755 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:19:02,755 INFO L87 Difference]: Start difference. First operand 32420 states and 47400 transitions. Second operand 3 states. [2018-09-14 17:19:04,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:19:04,545 INFO L93 Difference]: Finished difference Result 67450 states and 101678 transitions. [2018-09-14 17:19:04,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:19:04,545 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 370 [2018-09-14 17:19:04,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:19:04,721 INFO L225 Difference]: With dead ends: 67450 [2018-09-14 17:19:04,722 INFO L226 Difference]: Without dead ends: 35543 [2018-09-14 17:19:04,863 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 739 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:19:04,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35543 states. [2018-09-14 17:19:05,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35543 to 32588. [2018-09-14 17:19:05,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32588 states. [2018-09-14 17:19:05,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32588 states to 32588 states and 42986 transitions. [2018-09-14 17:19:05,998 INFO L78 Accepts]: Start accepts. Automaton has 32588 states and 42986 transitions. Word has length 370 [2018-09-14 17:19:05,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:19:06,000 INFO L480 AbstractCegarLoop]: Abstraction has 32588 states and 42986 transitions. [2018-09-14 17:19:06,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:19:06,000 INFO L276 IsEmpty]: Start isEmpty. Operand 32588 states and 42986 transitions. [2018-09-14 17:19:06,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2018-09-14 17:19:06,057 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:19:06,057 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 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 17:19:06,057 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:19:06,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1339658866, now seen corresponding path program 1 times [2018-09-14 17:19:06,058 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:19:06,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:19:06,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:19:06,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:19:06,059 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:19:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:19:06,800 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 320 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-14 17:19:06,801 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:19:06,801 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:19:06,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:19:06,818 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:19:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:19:06,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:19:07,156 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2018-09-14 17:19:07,579 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2018-09-14 17:19:07,580 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:19:07,954 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2018-09-14 17:19:07,975 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 17:19:07,975 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-09-14 17:19:07,975 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:19:07,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:19:07,976 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:19:07,976 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:19:07,976 INFO L87 Difference]: Start difference. First operand 32588 states and 42986 transitions. Second operand 3 states. [2018-09-14 17:19:11,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:19:11,146 INFO L93 Difference]: Finished difference Result 69009 states and 91418 transitions. [2018-09-14 17:19:11,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:19:11,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 371 [2018-09-14 17:19:11,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:19:11,706 INFO L225 Difference]: With dead ends: 69009 [2018-09-14 17:19:11,706 INFO L226 Difference]: Without dead ends: 36934 [2018-09-14 17:19:11,783 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 741 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:19:11,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36934 states. [2018-09-14 17:19:12,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36934 to 36924. [2018-09-14 17:19:12,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36924 states. [2018-09-14 17:19:12,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36924 states to 36924 states and 48342 transitions. [2018-09-14 17:19:12,461 INFO L78 Accepts]: Start accepts. Automaton has 36924 states and 48342 transitions. Word has length 371 [2018-09-14 17:19:12,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:19:12,462 INFO L480 AbstractCegarLoop]: Abstraction has 36924 states and 48342 transitions. [2018-09-14 17:19:12,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:19:12,462 INFO L276 IsEmpty]: Start isEmpty. Operand 36924 states and 48342 transitions. [2018-09-14 17:19:12,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2018-09-14 17:19:12,526 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:19:12,527 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:19:12,527 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:19:12,527 INFO L82 PathProgramCache]: Analyzing trace with hash 788101782, now seen corresponding path program 1 times [2018-09-14 17:19:12,527 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:19:12,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:19:12,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:19:12,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:19:12,528 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:19:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:19:13,814 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 129 proven. 215 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-14 17:19:13,815 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:19:13,815 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:19:13,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:19:13,833 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:19:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:19:13,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:19:14,188 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 394 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-09-14 17:19:14,188 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:19:14,361 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 222 proven. 95 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-09-14 17:19:14,383 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:19:14,383 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 12 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 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:19:14,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:19:14,399 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:19:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:19:14,663 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:19:15,246 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 394 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-09-14 17:19:15,246 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:19:15,446 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 17:19:15,696 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 222 proven. 95 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-09-14 17:19:15,698 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:19:15,699 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 5, 5] total 15 [2018-09-14 17:19:15,699 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:19:15,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-14 17:19:15,700 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-14 17:19:15,700 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2018-09-14 17:19:15,700 INFO L87 Difference]: Start difference. First operand 36924 states and 48342 transitions. Second operand 11 states. [2018-09-14 17:19:19,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:19:19,804 INFO L93 Difference]: Finished difference Result 82159 states and 108195 transitions. [2018-09-14 17:19:19,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-14 17:19:19,804 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 399 [2018-09-14 17:19:19,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:19:19,947 INFO L225 Difference]: With dead ends: 82159 [2018-09-14 17:19:19,947 INFO L226 Difference]: Without dead ends: 45748 [2018-09-14 17:19:20,078 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1614 GetRequests, 1588 SyntacticMatches, 10 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2018-09-14 17:19:20,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45748 states. [2018-09-14 17:19:20,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45748 to 45370. [2018-09-14 17:19:20,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45370 states. [2018-09-14 17:19:20,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45370 states to 45370 states and 58766 transitions. [2018-09-14 17:19:20,999 INFO L78 Accepts]: Start accepts. Automaton has 45370 states and 58766 transitions. Word has length 399 [2018-09-14 17:19:20,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:19:20,999 INFO L480 AbstractCegarLoop]: Abstraction has 45370 states and 58766 transitions. [2018-09-14 17:19:20,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-14 17:19:21,000 INFO L276 IsEmpty]: Start isEmpty. Operand 45370 states and 58766 transitions. [2018-09-14 17:19:21,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-09-14 17:19:21,076 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:19:21,077 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:19:21,077 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:19:21,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1007258772, now seen corresponding path program 1 times [2018-09-14 17:19:21,078 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:19:21,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:19:21,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:19:21,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:19:21,079 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:19:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:19:21,387 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2018-09-14 17:19:21,388 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:19:21,388 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:19:21,388 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:19:21,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:19:21,389 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:19:21,389 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:19:21,389 INFO L87 Difference]: Start difference. First operand 45370 states and 58766 transitions. Second operand 3 states. [2018-09-14 17:19:23,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:19:23,441 INFO L93 Difference]: Finished difference Result 94297 states and 123944 transitions. [2018-09-14 17:19:23,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:19:23,441 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 414 [2018-09-14 17:19:23,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:19:23,539 INFO L225 Difference]: With dead ends: 94297 [2018-09-14 17:19:23,539 INFO L226 Difference]: Without dead ends: 49440 [2018-09-14 17:19:23,611 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 17:19:23,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49440 states. [2018-09-14 17:19:24,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49440 to 49440. [2018-09-14 17:19:24,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49440 states. [2018-09-14 17:19:24,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49440 states to 49440 states and 63712 transitions. [2018-09-14 17:19:24,395 INFO L78 Accepts]: Start accepts. Automaton has 49440 states and 63712 transitions. Word has length 414 [2018-09-14 17:19:24,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:19:24,396 INFO L480 AbstractCegarLoop]: Abstraction has 49440 states and 63712 transitions. [2018-09-14 17:19:24,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:19:24,396 INFO L276 IsEmpty]: Start isEmpty. Operand 49440 states and 63712 transitions. [2018-09-14 17:19:24,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2018-09-14 17:19:24,476 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:19:24,476 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:19:24,476 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:19:24,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1050991242, now seen corresponding path program 1 times [2018-09-14 17:19:24,476 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:19:24,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:19:24,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:19:24,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:19:24,477 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:19:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:19:24,871 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 373 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-14 17:19:24,871 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:19:24,871 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:19:24,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:19:24,879 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:19:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:19:25,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:19:25,411 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 373 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-14 17:19:25,411 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:19:25,644 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 373 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-14 17:19:25,665 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:19:25,665 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 14 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 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:19:25,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:19:25,682 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:19:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:19:25,972 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:19:26,127 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 373 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-14 17:19:26,127 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:19:26,428 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 373 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-14 17:19:26,430 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:19:26,430 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 17:19:26,431 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:19:26,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:19:26,432 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:19:26,432 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:19:26,432 INFO L87 Difference]: Start difference. First operand 49440 states and 63712 transitions. Second operand 9 states. [2018-09-14 17:19:31,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:19:31,174 INFO L93 Difference]: Finished difference Result 109093 states and 144173 transitions. [2018-09-14 17:19:31,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-14 17:19:31,174 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 435 [2018-09-14 17:19:31,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:19:31,329 INFO L225 Difference]: With dead ends: 109093 [2018-09-14 17:19:31,330 INFO L226 Difference]: Without dead ends: 53272 [2018-09-14 17:19:31,478 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1758 GetRequests, 1735 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-09-14 17:19:31,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53272 states. [2018-09-14 17:19:32,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53272 to 50824. [2018-09-14 17:19:32,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50824 states. [2018-09-14 17:19:32,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50824 states to 50824 states and 63326 transitions. [2018-09-14 17:19:32,312 INFO L78 Accepts]: Start accepts. Automaton has 50824 states and 63326 transitions. Word has length 435 [2018-09-14 17:19:32,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:19:32,312 INFO L480 AbstractCegarLoop]: Abstraction has 50824 states and 63326 transitions. [2018-09-14 17:19:32,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:19:32,313 INFO L276 IsEmpty]: Start isEmpty. Operand 50824 states and 63326 transitions. [2018-09-14 17:19:32,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2018-09-14 17:19:32,399 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:19:32,399 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 17:19:32,399 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:19:32,399 INFO L82 PathProgramCache]: Analyzing trace with hash 193909947, now seen corresponding path program 1 times [2018-09-14 17:19:32,400 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:19:32,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:19:32,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:19:32,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:19:32,400 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:19:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:19:32,893 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 485 proven. 2 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2018-09-14 17:19:32,893 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:19:32,893 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:19:32,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:19:32,906 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:19:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:19:33,060 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:19:33,220 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 485 proven. 2 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2018-09-14 17:19:33,220 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:19:33,774 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 485 proven. 2 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2018-09-14 17:19:33,796 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:19:33,796 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 16 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 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:19:33,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:19:33,816 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:19:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:19:34,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:19:34,255 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 485 proven. 2 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2018-09-14 17:19:34,255 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:19:34,620 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 485 proven. 2 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2018-09-14 17:19:34,622 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:19:34,623 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 8 [2018-09-14 17:19:34,623 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:19:34,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 17:19:34,626 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 17:19:34,626 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:19:34,627 INFO L87 Difference]: Start difference. First operand 50824 states and 63326 transitions. Second operand 7 states. [2018-09-14 17:19:38,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:19:38,204 INFO L93 Difference]: Finished difference Result 105652 states and 134484 transitions. [2018-09-14 17:19:38,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-14 17:19:38,205 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 503 [2018-09-14 17:19:38,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:19:38,368 INFO L225 Difference]: With dead ends: 105652 [2018-09-14 17:19:38,368 INFO L226 Difference]: Without dead ends: 55023 [2018-09-14 17:19:38,475 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2024 GetRequests, 2010 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:19:38,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55023 states. [2018-09-14 17:19:39,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55023 to 53796. [2018-09-14 17:19:39,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53796 states. [2018-09-14 17:19:39,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53796 states to 53796 states and 66693 transitions. [2018-09-14 17:19:39,669 INFO L78 Accepts]: Start accepts. Automaton has 53796 states and 66693 transitions. Word has length 503 [2018-09-14 17:19:39,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:19:39,670 INFO L480 AbstractCegarLoop]: Abstraction has 53796 states and 66693 transitions. [2018-09-14 17:19:39,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 17:19:39,670 INFO L276 IsEmpty]: Start isEmpty. Operand 53796 states and 66693 transitions. [2018-09-14 17:19:39,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2018-09-14 17:19:39,759 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:19:39,759 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:19:39,759 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:19:39,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1663054835, now seen corresponding path program 1 times [2018-09-14 17:19:39,760 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:19:39,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:19:39,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:19:39,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:19:39,761 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:19:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:19:40,413 INFO L134 CoverageAnalysis]: Checked inductivity of 815 backedges. 178 proven. 348 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2018-09-14 17:19:40,414 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:19:40,414 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:19:40,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:19:40,423 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:19:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:19:40,580 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:19:47,203 WARN L178 SmtUtils]: Spent 6.17 s on a formula simplification that was a NOOP. DAG size: 40 [2018-09-14 17:19:49,530 INFO L134 CoverageAnalysis]: Checked inductivity of 815 backedges. 485 proven. 4 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2018-09-14 17:19:49,530 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:19:53,728 WARN L178 SmtUtils]: Spent 4.06 s on a formula simplification that was a NOOP. DAG size: 42 [2018-09-14 17:20:09,810 WARN L178 SmtUtils]: Spent 13.77 s on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-09-14 17:20:09,818 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:12,877 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:15,880 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:25,693 WARN L178 SmtUtils]: Spent 4.25 s on a formula simplification that was a NOOP. DAG size: 95 [2018-09-14 17:20:25,701 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:25,715 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:25,730 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:25,744 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:25,758 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:25,773 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:25,787 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:25,802 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:25,816 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:25,830 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:25,845 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:25,858 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:25,872 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:25,886 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:25,900 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:25,913 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:25,927 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:25,941 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:25,955 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:25,968 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:25,982 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:25,995 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,008 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,022 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,035 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,049 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,063 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,079 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,093 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,107 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,121 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,136 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,153 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,168 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,181 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,194 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,208 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,221 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,234 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,247 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,260 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,273 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,287 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,300 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,314 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,327 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,340 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,354 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,367 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,380 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,393 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,407 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,420 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,432 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,447 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,460 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,473 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,486 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,499 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,512 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,524 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,538 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,550 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,563 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,576 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,590 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,603 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,616 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,629 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,642 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,655 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,669 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,682 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,694 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,706 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,719 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-14 17:20:26,895 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 36 [2018-09-14 17:21:01,444 WARN L178 SmtUtils]: Spent 24.16 s on a formula simplification that was a NOOP. DAG size: 83 [2018-09-14 17:21:01,513 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 392 Received shutdown request... [2018-09-14 17:21:06,680 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-14 17:21:06,881 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:21:06,881 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:21:06,887 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:21:06,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:21:06 BoogieIcfgContainer [2018-09-14 17:21:06,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:21:06,888 INFO L168 Benchmark]: Toolchain (without parser) took 239974.03 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -36.3 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-09-14 17:21:06,889 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 17:21:06,890 INFO L168 Benchmark]: CACSL2BoogieTranslator took 916.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-09-14 17:21:06,890 INFO L168 Benchmark]: Boogie Procedure Inliner took 150.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-14 17:21:06,891 INFO L168 Benchmark]: Boogie Preprocessor took 370.98 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 835.2 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -949.3 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. [2018-09-14 17:21:06,892 INFO L168 Benchmark]: RCFGBuilder took 4999.40 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 197.4 MB). Peak memory consumption was 197.4 MB. Max. memory is 7.1 GB. [2018-09-14 17:21:06,892 INFO L168 Benchmark]: TraceAbstraction took 233530.79 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 631.0 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-09-14 17:21:06,897 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 916.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 150.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 370.98 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 835.2 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -949.3 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4999.40 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 197.4 MB). Peak memory consumption was 197.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233530.79 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 631.0 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 129). Cancelled while BasicCegarLoop was analyzing trace of length 539 with TraceHistMax 5, while TraceCheckSpWp was constructing backward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 1 quantifier alternations, while CnfTransformerHelper was transforming 392 disjunction. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 233.4s OverallTime, 15 OverallIterations, 5 TraceHistogramMax, 104.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3232 SDtfs, 14365 SDslu, 2917 SDs, 0 SdLazy, 26820 SolverSat, 5564 SolverUnsat, 15 SolverUnknown, 0 SolverNotchecked, 79.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10778 GetRequests, 10565 SyntacticMatches, 45 SemanticMatches, 168 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 24.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53796occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 11650 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 25.8s InterpolantComputationTime, 9509 NumberOfCodeBlocks, 9509 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 14756 ConstructedInterpolants, 49 QuantifiedInterpolants, 15231695 SizeOfPredicates, 14 NumberOfNonLiveVariables, 8842 ConjunctsInSsa, 100 ConjunctsInUnsatCore, 44 InterpolantComputations, 10 PerfectInterpolantSequences, 13906/14880 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label56_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-21-06-911.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label56_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-21-06-911.csv Completed graceful shutdown