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/Problem15_label17_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:44:56,127 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:44:56,129 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:44:56,147 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:44:56,147 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:44:56,149 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:44:56,151 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:44:56,153 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:44:56,157 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:44:56,158 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:44:56,162 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:44:56,163 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:44:56,163 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:44:56,173 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:44:56,174 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:44:56,175 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:44:56,176 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:44:56,181 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:44:56,185 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:44:56,187 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:44:56,190 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:44:56,191 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:44:56,194 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:44:56,195 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:44:56,195 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:44:56,196 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:44:56,197 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:44:56,198 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:44:56,200 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:44:56,201 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:44:56,201 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:44:56,202 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:44:56,202 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:44:56,202 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:44:56,203 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:44:56,205 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:44:56,205 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 17:44:56,230 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:44:56,231 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:44:56,231 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:44:56,232 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:44:56,232 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:44:56,232 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:44:56,232 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:44:56,233 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:44:56,233 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:44:56,233 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:44:56,233 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:44:56,234 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:44:56,234 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:44:56,234 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:44:56,234 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:44:56,235 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:44:56,235 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:44:56,235 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:44:56,235 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:44:56,235 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:44:56,236 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:44:56,236 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:44:56,236 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:44:56,236 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:44:56,236 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:44:56,237 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:44:56,237 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:44:56,237 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:44:56,237 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:44:56,237 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:44:56,238 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:44:56,238 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:44:56,238 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:44:56,282 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:44:56,295 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:44:56,299 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:44:56,301 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:44:56,301 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:44:56,302 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label17_true-unreach-call.c [2018-09-14 17:44:56,651 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/911a9dfaa/ee8065c818ef4c68aa4e7dd310b0dcde/FLAGab649f75a [2018-09-14 17:44:56,995 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:44:56,996 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label17_true-unreach-call.c [2018-09-14 17:44:57,014 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/911a9dfaa/ee8065c818ef4c68aa4e7dd310b0dcde/FLAGab649f75a [2018-09-14 17:44:57,030 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/911a9dfaa/ee8065c818ef4c68aa4e7dd310b0dcde [2018-09-14 17:44:57,043 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:44:57,046 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:44:57,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:44:57,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:44:57,056 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:44:57,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:44:57" (1/1) ... [2018-09-14 17:44:57,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@627e0d8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:44:57, skipping insertion in model container [2018-09-14 17:44:57,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:44:57" (1/1) ... [2018-09-14 17:44:57,074 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:44:57,989 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:44:58,010 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:44:58,300 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:44:58,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:44:58 WrapperNode [2018-09-14 17:44:58,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:44:58,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:44:58,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:44:58,482 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:44:58,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:44:58" (1/1) ... [2018-09-14 17:44:58,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:44:58" (1/1) ... [2018-09-14 17:44:58,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:44:58,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:44:58,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:44:58,740 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:44:59,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:44:58" (1/1) ... [2018-09-14 17:44:59,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:44:58" (1/1) ... [2018-09-14 17:44:59,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:44:58" (1/1) ... [2018-09-14 17:44:59,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:44:58" (1/1) ... [2018-09-14 17:44:59,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:44:58" (1/1) ... [2018-09-14 17:44:59,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:44:58" (1/1) ... [2018-09-14 17:44:59,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:44:58" (1/1) ... [2018-09-14 17:44:59,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:44:59,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:44:59,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:44:59,386 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:44:59,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:44:58" (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 17:44:59,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:44:59,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:44:59,462 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:44:59,462 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:44:59,462 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:44:59,463 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:44:59,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:44:59,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:44:59,463 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:44:59,463 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:45:07,186 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:45:07,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:45:07 BoogieIcfgContainer [2018-09-14 17:45:07,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:45:07,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:45:07,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:45:07,192 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:45:07,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:44:57" (1/3) ... [2018-09-14 17:45:07,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da3814a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:45:07, skipping insertion in model container [2018-09-14 17:45:07,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:44:58" (2/3) ... [2018-09-14 17:45:07,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da3814a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:45:07, skipping insertion in model container [2018-09-14 17:45:07,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:45:07" (3/3) ... [2018-09-14 17:45:07,196 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label17_true-unreach-call.c [2018-09-14 17:45:07,206 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:45:07,214 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:45:07,267 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:45:07,268 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:45:07,268 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:45:07,268 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:45:07,268 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:45:07,268 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:45:07,269 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:45:07,269 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:45:07,269 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:45:07,300 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-09-14 17:45:07,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-14 17:45:07,311 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:45:07,313 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:45:07,314 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:45:07,319 INFO L82 PathProgramCache]: Analyzing trace with hash -466459612, now seen corresponding path program 1 times [2018-09-14 17:45:07,322 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:45:07,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:45:07,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:45:07,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:45:07,375 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:45:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:45:07,910 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-09-14 17:45:07,981 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 17:45:07,983 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:45:07,984 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:45:07,984 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:45:07,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:45:08,029 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:45:08,032 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:45:08,035 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-09-14 17:45:19,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:45:19,918 INFO L93 Difference]: Finished difference Result 1514 states and 2777 transitions. [2018-09-14 17:45:19,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:45:19,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2018-09-14 17:45:19,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:45:19,946 INFO L225 Difference]: With dead ends: 1514 [2018-09-14 17:45:19,946 INFO L226 Difference]: Without dead ends: 1070 [2018-09-14 17:45:19,960 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 17:45:19,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2018-09-14 17:45:20,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1068. [2018-09-14 17:45:20,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-09-14 17:45:20,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1675 transitions. [2018-09-14 17:45:20,120 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1675 transitions. Word has length 70 [2018-09-14 17:45:20,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:45:20,121 INFO L480 AbstractCegarLoop]: Abstraction has 1068 states and 1675 transitions. [2018-09-14 17:45:20,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:45:20,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1675 transitions. [2018-09-14 17:45:20,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-14 17:45:20,140 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:45:20,141 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:45:20,141 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:45:20,143 INFO L82 PathProgramCache]: Analyzing trace with hash 608103471, now seen corresponding path program 1 times [2018-09-14 17:45:20,144 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:45:20,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:45:20,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:45:20,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:45:20,146 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:45:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:45:20,457 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:45:20,457 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:45:20,457 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:45:20,457 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:45:20,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:45:20,460 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:45:20,460 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:45:20,460 INFO L87 Difference]: Start difference. First operand 1068 states and 1675 transitions. Second operand 4 states. [2018-09-14 17:45:27,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:45:27,794 INFO L93 Difference]: Finished difference Result 3989 states and 6445 transitions. [2018-09-14 17:45:27,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:45:27,798 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2018-09-14 17:45:27,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:45:27,819 INFO L225 Difference]: With dead ends: 3989 [2018-09-14 17:45:27,819 INFO L226 Difference]: Without dead ends: 2927 [2018-09-14 17:45:27,829 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 17:45:27,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2018-09-14 17:45:27,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2925. [2018-09-14 17:45:27,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-09-14 17:45:27,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4174 transitions. [2018-09-14 17:45:27,935 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4174 transitions. Word has length 140 [2018-09-14 17:45:27,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:45:27,936 INFO L480 AbstractCegarLoop]: Abstraction has 2925 states and 4174 transitions. [2018-09-14 17:45:27,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:45:27,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4174 transitions. [2018-09-14 17:45:27,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-09-14 17:45:27,943 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:45:27,944 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:45:27,944 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:45:27,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1294046763, now seen corresponding path program 1 times [2018-09-14 17:45:27,945 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:45:27,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:45:27,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:45:27,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:45:27,946 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:45:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:45:28,471 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 127 proven. 77 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-14 17:45:28,472 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:45:28,472 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 17:45:28,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:45:28,493 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:45:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:45:28,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:45:28,969 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-14 17:45:28,970 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:45:30,164 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-14 17:45:30,199 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:45:30,200 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-09-14 17:45:30,200 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:45:30,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:45:30,202 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:45:30,204 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:45:30,204 INFO L87 Difference]: Start difference. First operand 2925 states and 4174 transitions. Second operand 5 states. [2018-09-14 17:45:38,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:45:38,682 INFO L93 Difference]: Finished difference Result 8371 states and 12203 transitions. [2018-09-14 17:45:38,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:45:38,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2018-09-14 17:45:38,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:45:38,716 INFO L225 Difference]: With dead ends: 8371 [2018-09-14 17:45:38,716 INFO L226 Difference]: Without dead ends: 5452 [2018-09-14 17:45:38,731 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 498 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:45:38,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5452 states. [2018-09-14 17:45:38,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5452 to 5452. [2018-09-14 17:45:38,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5452 states. [2018-09-14 17:45:38,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5452 states to 5452 states and 7305 transitions. [2018-09-14 17:45:38,872 INFO L78 Accepts]: Start accepts. Automaton has 5452 states and 7305 transitions. Word has length 250 [2018-09-14 17:45:38,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:45:38,873 INFO L480 AbstractCegarLoop]: Abstraction has 5452 states and 7305 transitions. [2018-09-14 17:45:38,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:45:38,873 INFO L276 IsEmpty]: Start isEmpty. Operand 5452 states and 7305 transitions. [2018-09-14 17:45:38,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2018-09-14 17:45:38,888 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:45:38,889 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:45:38,889 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:45:38,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1776743063, now seen corresponding path program 1 times [2018-09-14 17:45:38,890 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:45:38,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:45:38,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:45:38,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:45:38,891 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:45:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:45:39,424 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 354 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-14 17:45:39,425 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:45:39,425 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 17:45:39,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:45:39,433 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:45:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:45:39,569 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:45:40,039 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 354 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-14 17:45:40,039 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:45:40,781 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 354 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-14 17:45:40,814 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:45:40,814 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:45:40,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:45:40,845 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:45:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:45:41,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:45:41,409 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 354 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-14 17:45:41,409 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:45:41,820 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 354 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-14 17:45:41,824 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:45:41,825 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 17:45:41,825 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:45:41,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:45:41,827 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:45:41,827 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:45:41,828 INFO L87 Difference]: Start difference. First operand 5452 states and 7305 transitions. Second operand 9 states. [2018-09-14 17:45:52,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:45:52,690 INFO L93 Difference]: Finished difference Result 16644 states and 24451 transitions. [2018-09-14 17:45:52,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-14 17:45:52,694 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 435 [2018-09-14 17:45:52,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:45:52,785 INFO L225 Difference]: With dead ends: 16644 [2018-09-14 17:45:52,785 INFO L226 Difference]: Without dead ends: 11198 [2018-09-14 17:45:52,868 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1774 GetRequests, 1744 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=218, Invalid=484, Unknown=0, NotChecked=0, Total=702 [2018-09-14 17:45:52,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11198 states. [2018-09-14 17:45:53,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11198 to 10476. [2018-09-14 17:45:53,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10476 states. [2018-09-14 17:45:53,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10476 states to 10476 states and 13695 transitions. [2018-09-14 17:45:53,236 INFO L78 Accepts]: Start accepts. Automaton has 10476 states and 13695 transitions. Word has length 435 [2018-09-14 17:45:53,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:45:53,237 INFO L480 AbstractCegarLoop]: Abstraction has 10476 states and 13695 transitions. [2018-09-14 17:45:53,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:45:53,238 INFO L276 IsEmpty]: Start isEmpty. Operand 10476 states and 13695 transitions. [2018-09-14 17:45:53,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2018-09-14 17:45:53,267 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:45:53,268 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:45:53,268 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:45:53,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1531863587, now seen corresponding path program 1 times [2018-09-14 17:45:53,269 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:45:53,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:45:53,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:45:53,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:45:53,270 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:45:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:45:53,821 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 277 proven. 82 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-14 17:45:53,821 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:45:53,822 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 17:45:53,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:45:53,830 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:45:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:45:53,959 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:45:54,158 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-09-14 17:45:54,158 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:45:54,305 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2018-09-14 17:45:54,327 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:45:54,328 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 7 [2018-09-14 17:45:54,328 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:45:54,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:45:54,328 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:45:54,328 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-09-14 17:45:54,329 INFO L87 Difference]: Start difference. First operand 10476 states and 13695 transitions. Second operand 3 states. [2018-09-14 17:45:57,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:45:57,839 INFO L93 Difference]: Finished difference Result 29437 states and 41366 transitions. [2018-09-14 17:45:57,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:45:57,844 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 441 [2018-09-14 17:45:57,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:45:58,000 INFO L225 Difference]: With dead ends: 29437 [2018-09-14 17:45:58,001 INFO L226 Difference]: Without dead ends: 19027 [2018-09-14 17:45:58,101 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 887 GetRequests, 882 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-09-14 17:45:58,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19027 states. [2018-09-14 17:45:58,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19027 to 18702. [2018-09-14 17:45:58,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18702 states. [2018-09-14 17:45:58,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18702 states to 18702 states and 25645 transitions. [2018-09-14 17:45:58,899 INFO L78 Accepts]: Start accepts. Automaton has 18702 states and 25645 transitions. Word has length 441 [2018-09-14 17:45:58,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:45:58,900 INFO L480 AbstractCegarLoop]: Abstraction has 18702 states and 25645 transitions. [2018-09-14 17:45:58,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:45:58,901 INFO L276 IsEmpty]: Start isEmpty. Operand 18702 states and 25645 transitions. [2018-09-14 17:45:58,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2018-09-14 17:45:58,951 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:45:58,952 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:45:58,952 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:45:58,952 INFO L82 PathProgramCache]: Analyzing trace with hash -868769823, now seen corresponding path program 1 times [2018-09-14 17:45:58,956 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:45:58,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:45:58,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:45:58,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:45:58,957 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:45:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:45:59,701 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 277 proven. 82 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-14 17:45:59,701 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:45:59,701 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:45:59,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:45:59,717 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:45:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:45:59,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:46:00,345 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 374 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-14 17:46:00,346 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:46:00,558 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 17:46:01,403 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 277 proven. 82 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-14 17:46:01,424 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:46:01,424 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:46:01,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:46:01,440 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:46:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:46:01,720 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:46:01,996 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 374 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-14 17:46:01,996 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:46:02,401 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 277 proven. 82 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-14 17:46:02,403 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:46:02,404 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 17:46:02,404 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:46:02,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:46:02,407 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:46:02,408 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:46:02,408 INFO L87 Difference]: Start difference. First operand 18702 states and 25645 transitions. Second operand 9 states. [2018-09-14 17:46:11,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:46:11,158 INFO L93 Difference]: Finished difference Result 41594 states and 58930 transitions. [2018-09-14 17:46:11,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-14 17:46:11,159 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 441 [2018-09-14 17:46:11,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:46:11,283 INFO L225 Difference]: With dead ends: 41594 [2018-09-14 17:46:11,283 INFO L226 Difference]: Without dead ends: 22977 [2018-09-14 17:46:11,429 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1790 GetRequests, 1764 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2018-09-14 17:46:11,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22977 states. [2018-09-14 17:46:12,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22977 to 22781. [2018-09-14 17:46:12,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22781 states. [2018-09-14 17:46:12,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22781 states to 22781 states and 29084 transitions. [2018-09-14 17:46:12,256 INFO L78 Accepts]: Start accepts. Automaton has 22781 states and 29084 transitions. Word has length 441 [2018-09-14 17:46:12,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:46:12,257 INFO L480 AbstractCegarLoop]: Abstraction has 22781 states and 29084 transitions. [2018-09-14 17:46:12,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:46:12,257 INFO L276 IsEmpty]: Start isEmpty. Operand 22781 states and 29084 transitions. [2018-09-14 17:46:12,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2018-09-14 17:46:12,292 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:46:12,293 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:12,293 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:46:12,293 INFO L82 PathProgramCache]: Analyzing trace with hash -2062599787, now seen corresponding path program 1 times [2018-09-14 17:46:12,293 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:46:12,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:46:12,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:46:12,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:46:12,295 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:46:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:46:12,731 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-09-14 17:46:12,732 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:46:12,732 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:46:12,732 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:46:12,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:46:12,733 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:46:12,734 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:46:12,734 INFO L87 Difference]: Start difference. First operand 22781 states and 29084 transitions. Second operand 3 states. [2018-09-14 17:46:16,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:46:16,973 INFO L93 Difference]: Finished difference Result 45786 states and 58793 transitions. [2018-09-14 17:46:16,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:46:16,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 512 [2018-09-14 17:46:16,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:46:17,089 INFO L225 Difference]: With dead ends: 45786 [2018-09-14 17:46:17,089 INFO L226 Difference]: Without dead ends: 23090 [2018-09-14 17:46:17,180 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 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 17:46:17,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23090 states. [2018-09-14 17:46:17,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23090 to 22777. [2018-09-14 17:46:17,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22777 states. [2018-09-14 17:46:17,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22777 states to 22777 states and 29063 transitions. [2018-09-14 17:46:17,705 INFO L78 Accepts]: Start accepts. Automaton has 22777 states and 29063 transitions. Word has length 512 [2018-09-14 17:46:17,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:46:17,706 INFO L480 AbstractCegarLoop]: Abstraction has 22777 states and 29063 transitions. [2018-09-14 17:46:17,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:46:17,707 INFO L276 IsEmpty]: Start isEmpty. Operand 22777 states and 29063 transitions. [2018-09-14 17:46:17,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2018-09-14 17:46:17,747 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:46:17,748 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:17,748 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:46:17,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1791773807, now seen corresponding path program 1 times [2018-09-14 17:46:17,749 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:46:17,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:46:17,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:46:17,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:46:17,752 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:46:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:46:19,292 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 191 proven. 15 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2018-09-14 17:46:19,293 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:46:19,293 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:46:19,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:46:19,305 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:46:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:46:19,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:46:19,904 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2018-09-14 17:46:19,905 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:46:21,321 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 189 proven. 199 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-14 17:46:21,342 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:46:21,343 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-09-14 17:46:21,343 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:46:21,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:46:21,344 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:46:21,344 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:46:21,344 INFO L87 Difference]: Start difference. First operand 22777 states and 29063 transitions. Second operand 5 states. [2018-09-14 17:46:29,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:46:29,903 INFO L93 Difference]: Finished difference Result 49029 states and 63714 transitions. [2018-09-14 17:46:29,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:46:29,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 533 [2018-09-14 17:46:29,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:46:30,028 INFO L225 Difference]: With dead ends: 49029 [2018-09-14 17:46:30,028 INFO L226 Difference]: Without dead ends: 26263 [2018-09-14 17:46:30,152 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1078 GetRequests, 1062 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-09-14 17:46:30,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26263 states. [2018-09-14 17:46:30,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26263 to 25606. [2018-09-14 17:46:30,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25606 states. [2018-09-14 17:46:30,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25606 states to 25606 states and 32448 transitions. [2018-09-14 17:46:30,695 INFO L78 Accepts]: Start accepts. Automaton has 25606 states and 32448 transitions. Word has length 533 [2018-09-14 17:46:30,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:46:30,695 INFO L480 AbstractCegarLoop]: Abstraction has 25606 states and 32448 transitions. [2018-09-14 17:46:30,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:46:30,695 INFO L276 IsEmpty]: Start isEmpty. Operand 25606 states and 32448 transitions. [2018-09-14 17:46:30,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2018-09-14 17:46:30,717 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:46:30,717 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:30,718 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:46:30,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1298296717, now seen corresponding path program 1 times [2018-09-14 17:46:30,718 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:46:30,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:46:30,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:46:30,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:46:30,719 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:46:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:46:31,526 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 317 proven. 83 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-14 17:46:31,526 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:46:31,526 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:46:31,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:46:31,534 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:46:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:46:31,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:46:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-14 17:46:32,137 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:46:32,486 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 317 proven. 83 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-14 17:46:32,508 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:46:32,508 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 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:46:32,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:46:32,529 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:46:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:46:32,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:46:33,028 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-14 17:46:33,029 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:46:33,278 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 317 proven. 83 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-14 17:46:33,280 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:46:33,280 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 17:46:33,280 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:46:33,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:46:33,282 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:46:33,282 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:46:33,283 INFO L87 Difference]: Start difference. First operand 25606 states and 32448 transitions. Second operand 9 states. [2018-09-14 17:46:40,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:46:40,240 INFO L93 Difference]: Finished difference Result 52412 states and 68288 transitions. [2018-09-14 17:46:40,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-14 17:46:40,240 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 568 [2018-09-14 17:46:40,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:46:40,382 INFO L225 Difference]: With dead ends: 52412 [2018-09-14 17:46:40,383 INFO L226 Difference]: Without dead ends: 27139 [2018-09-14 17:46:40,521 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2302 GetRequests, 2274 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2018-09-14 17:46:40,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27139 states. [2018-09-14 17:46:40,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27139 to 26581. [2018-09-14 17:46:40,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26581 states. [2018-09-14 17:46:41,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26581 states to 26581 states and 32481 transitions. [2018-09-14 17:46:41,078 INFO L78 Accepts]: Start accepts. Automaton has 26581 states and 32481 transitions. Word has length 568 [2018-09-14 17:46:41,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:46:41,079 INFO L480 AbstractCegarLoop]: Abstraction has 26581 states and 32481 transitions. [2018-09-14 17:46:41,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:46:41,080 INFO L276 IsEmpty]: Start isEmpty. Operand 26581 states and 32481 transitions. [2018-09-14 17:46:41,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2018-09-14 17:46:41,102 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:46:41,103 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:46:41,103 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:46:41,103 INFO L82 PathProgramCache]: Analyzing trace with hash -359991384, now seen corresponding path program 1 times [2018-09-14 17:46:41,103 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:46:41,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:46:41,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:46:41,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:46:41,105 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:46:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:46:42,796 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 356 proven. 371 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-14 17:46:42,796 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:46:42,797 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 17:46:42,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:46:42,804 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:46:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:46:42,984 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:46:43,672 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 568 proven. 41 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2018-09-14 17:46:43,673 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:46:44,828 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 267 proven. 460 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-14 17:46:44,849 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:46:44,849 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 17:46:44,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:46:44,867 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:46:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:46:45,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:46:46,107 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 518 proven. 41 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2018-09-14 17:46:46,107 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:46:47,119 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 267 proven. 460 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-14 17:46:47,121 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:46:47,122 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9, 8, 9] total 23 [2018-09-14 17:46:47,122 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:46:47,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-14 17:46:47,123 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-14 17:46:47,124 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2018-09-14 17:46:47,124 INFO L87 Difference]: Start difference. First operand 26581 states and 32481 transitions. Second operand 13 states. [2018-09-14 17:47:07,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:47:07,407 INFO L93 Difference]: Finished difference Result 65450 states and 81033 transitions. [2018-09-14 17:47:07,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-14 17:47:07,408 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 629 [2018-09-14 17:47:07,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:47:07,570 INFO L225 Difference]: With dead ends: 65450 [2018-09-14 17:47:07,570 INFO L226 Difference]: Without dead ends: 37603 [2018-09-14 17:47:07,700 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2571 GetRequests, 2525 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=490, Invalid=1580, Unknown=0, NotChecked=0, Total=2070 [2018-09-14 17:47:07,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37603 states. [2018-09-14 17:47:08,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37603 to 36990. [2018-09-14 17:47:08,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36990 states. [2018-09-14 17:47:08,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36990 states to 36990 states and 45027 transitions. [2018-09-14 17:47:08,493 INFO L78 Accepts]: Start accepts. Automaton has 36990 states and 45027 transitions. Word has length 629 [2018-09-14 17:47:08,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:47:08,494 INFO L480 AbstractCegarLoop]: Abstraction has 36990 states and 45027 transitions. [2018-09-14 17:47:08,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-14 17:47:08,494 INFO L276 IsEmpty]: Start isEmpty. Operand 36990 states and 45027 transitions. [2018-09-14 17:47:08,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2018-09-14 17:47:08,518 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:47:08,519 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, 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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:47:08,519 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:47:08,520 INFO L82 PathProgramCache]: Analyzing trace with hash -478597837, now seen corresponding path program 1 times [2018-09-14 17:47:08,520 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:47:08,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:47:08,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:47:08,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:47:08,521 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:47:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:47:09,819 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 273 proven. 462 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-09-14 17:47:09,819 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:47:09,820 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 17:47:09,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:47:09,828 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:47:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:47:10,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:47:10,516 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 508 proven. 2 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-09-14 17:47:10,516 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:47:10,895 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 508 proven. 2 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-09-14 17:47:10,916 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:47:10,916 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 17:47:10,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:47:10,932 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:47:11,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:47:11,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:47:11,621 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 508 proven. 2 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-09-14 17:47:11,622 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:47:11,954 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 508 proven. 2 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-09-14 17:47:11,958 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:47:11,959 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5, 5, 5] total 13 [2018-09-14 17:47:11,959 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:47:11,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-14 17:47:11,961 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-14 17:47:11,961 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:47:11,961 INFO L87 Difference]: Start difference. First operand 36990 states and 45027 transitions. Second operand 12 states. [2018-09-14 17:47:35,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:47:35,252 INFO L93 Difference]: Finished difference Result 128933 states and 164789 transitions. [2018-09-14 17:47:35,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-14 17:47:35,252 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 668 [2018-09-14 17:47:35,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:47:35,677 INFO L225 Difference]: With dead ends: 128933 [2018-09-14 17:47:35,677 INFO L226 Difference]: Without dead ends: 92367 [2018-09-14 17:47:36,357 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2778 GetRequests, 2712 SyntacticMatches, 5 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1310 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=725, Invalid=3181, Unknown=0, NotChecked=0, Total=3906 [2018-09-14 17:47:36,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92367 states. [2018-09-14 17:47:37,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92367 to 80329. [2018-09-14 17:47:37,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80329 states. [2018-09-14 17:47:37,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80329 states to 80329 states and 95919 transitions. [2018-09-14 17:47:37,964 INFO L78 Accepts]: Start accepts. Automaton has 80329 states and 95919 transitions. Word has length 668 [2018-09-14 17:47:37,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:47:37,964 INFO L480 AbstractCegarLoop]: Abstraction has 80329 states and 95919 transitions. [2018-09-14 17:47:37,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-14 17:47:37,965 INFO L276 IsEmpty]: Start isEmpty. Operand 80329 states and 95919 transitions. [2018-09-14 17:47:37,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2018-09-14 17:47:37,995 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:47:37,995 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:47:37,995 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:47:37,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1427960617, now seen corresponding path program 1 times [2018-09-14 17:47:37,996 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:47:37,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:47:37,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:47:37,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:47:37,997 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:47:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:47:38,776 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2018-09-14 17:47:38,776 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:47:38,776 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:47:38,776 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:47:38,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:47:38,777 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:47:38,778 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:47:38,778 INFO L87 Difference]: Start difference. First operand 80329 states and 95919 transitions. Second operand 5 states. [2018-09-14 17:47:48,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:47:48,841 INFO L93 Difference]: Finished difference Result 207421 states and 249753 transitions. [2018-09-14 17:47:48,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-14 17:47:48,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 710 [2018-09-14 17:47:48,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:47:49,362 INFO L225 Difference]: With dead ends: 207421 [2018-09-14 17:47:49,363 INFO L226 Difference]: Without dead ends: 129580 [2018-09-14 17:47:49,715 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:47:49,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129580 states. [2018-09-14 17:47:51,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129580 to 126959. [2018-09-14 17:47:51,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126959 states. [2018-09-14 17:47:53,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126959 states to 126959 states and 148564 transitions. [2018-09-14 17:47:53,101 INFO L78 Accepts]: Start accepts. Automaton has 126959 states and 148564 transitions. Word has length 710 [2018-09-14 17:47:53,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:47:53,101 INFO L480 AbstractCegarLoop]: Abstraction has 126959 states and 148564 transitions. [2018-09-14 17:47:53,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:47:53,102 INFO L276 IsEmpty]: Start isEmpty. Operand 126959 states and 148564 transitions. [2018-09-14 17:47:53,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 740 [2018-09-14 17:47:53,143 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:47:53,143 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:47:53,144 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:47:53,144 INFO L82 PathProgramCache]: Analyzing trace with hash -632255730, now seen corresponding path program 1 times [2018-09-14 17:47:53,144 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:47:53,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:47:53,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:47:53,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:47:53,145 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:47:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:47:55,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 441 proven. 532 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-14 17:47:55,181 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:47:55,181 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 17:47:55,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:47:55,190 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:47:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:47:55,396 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:47:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 729 proven. 126 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2018-09-14 17:47:56,991 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:47:58,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 267 proven. 706 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-14 17:47:58,555 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:47:58,555 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 17:47:58,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:47:58,571 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:47:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:47:59,036 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:48:00,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 679 proven. 126 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2018-09-14 17:48:00,253 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:48:01,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 267 proven. 706 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-14 17:48:01,897 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:48:01,898 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9, 8, 9] total 23 [2018-09-14 17:48:01,898 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:48:01,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-14 17:48:01,899 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-14 17:48:01,899 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2018-09-14 17:48:01,900 INFO L87 Difference]: Start difference. First operand 126959 states and 148564 transitions. Second operand 13 states. [2018-09-14 17:48:09,014 WARN L178 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2018-09-14 17:48:25,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:48:25,426 INFO L93 Difference]: Finished difference Result 259378 states and 304103 transitions. [2018-09-14 17:48:25,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-14 17:48:25,427 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 739 [2018-09-14 17:48:25,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:48:25,915 INFO L225 Difference]: With dead ends: 259378 [2018-09-14 17:48:25,915 INFO L226 Difference]: Without dead ends: 129916 [2018-09-14 17:48:26,355 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3013 GetRequests, 2963 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=506, Invalid=1656, Unknown=0, NotChecked=0, Total=2162 [2018-09-14 17:48:26,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129916 states. [2018-09-14 17:48:28,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129916 to 127439. [2018-09-14 17:48:28,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127439 states. [2018-09-14 17:48:29,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127439 states to 127439 states and 148126 transitions. [2018-09-14 17:48:29,441 INFO L78 Accepts]: Start accepts. Automaton has 127439 states and 148126 transitions. Word has length 739 [2018-09-14 17:48:29,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:48:29,442 INFO L480 AbstractCegarLoop]: Abstraction has 127439 states and 148126 transitions. [2018-09-14 17:48:29,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-14 17:48:29,442 INFO L276 IsEmpty]: Start isEmpty. Operand 127439 states and 148126 transitions. [2018-09-14 17:48:29,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2018-09-14 17:48:29,505 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:48:29,505 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:48:29,506 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:48:29,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1469111637, now seen corresponding path program 1 times [2018-09-14 17:48:29,506 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:48:29,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:48:29,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:48:29,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:48:29,508 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:48:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:48:31,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 658 proven. 2 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2018-09-14 17:48:31,492 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:48:31,492 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 17:48:31,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:48:31,501 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:48:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:48:31,722 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:48:32,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 911 proven. 6 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2018-09-14 17:48:32,016 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:48:32,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 913 proven. 4 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2018-09-14 17:48:32,909 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:48:32,909 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 18 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 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:48:32,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:48:32,928 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:48:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:48:33,416 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:48:33,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 911 proven. 6 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2018-09-14 17:48:33,642 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:48:34,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 913 proven. 4 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2018-09-14 17:48:34,154 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:48:34,155 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6] total 11 [2018-09-14 17:48:34,155 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:48:34,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:48:34,157 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:48:34,157 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:48:34,157 INFO L87 Difference]: Start difference. First operand 127439 states and 148126 transitions. Second operand 9 states. Received shutdown request... [2018-09-14 17:48:44,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-14 17:48:44,955 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:48:44,960 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:48:44,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:48:44 BoogieIcfgContainer [2018-09-14 17:48:44,961 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:48:44,961 INFO L168 Benchmark]: Toolchain (without parser) took 227917.95 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 210.2 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-09-14 17:48:44,963 INFO L168 Benchmark]: CDTParser took 0.20 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 17:48:44,963 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1433.58 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: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-09-14 17:48:44,964 INFO L168 Benchmark]: Boogie Procedure Inliner took 257.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:48:44,964 INFO L168 Benchmark]: Boogie Preprocessor took 645.80 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 874.0 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB. [2018-09-14 17:48:44,965 INFO L168 Benchmark]: RCFGBuilder took 7802.26 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 309.9 MB). Peak memory consumption was 309.9 MB. Max. memory is 7.1 GB. [2018-09-14 17:48:44,966 INFO L168 Benchmark]: TraceAbstraction took 217772.54 ms. Allocated memory was 2.4 GB in the beginning and 3.8 GB in the end (delta: 1.4 GB). Free memory was 2.0 GB in the beginning and 1.2 GB in the end (delta: 794.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-09-14 17:48:44,970 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 1433.58 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: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 257.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 645.80 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 874.0 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7802.26 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 309.9 MB). Peak memory consumption was 309.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217772.54 ms. Allocated memory was 2.4 GB in the beginning and 3.8 GB in the end (delta: 1.4 GB). Free memory was 2.0 GB in the beginning and 1.2 GB in the end (delta: 794.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 196]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 196). Cancelled while BasicCegarLoop was constructing difference of abstraction (127439states) and FLOYD_HOARE automaton (currently 18 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (266283 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 217.7s OverallTime, 14 OverallIterations, 6 TraceHistogramMax, 163.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3082 SDtfs, 34560 SDslu, 4450 SDs, 0 SdLazy, 58842 SolverSat, 11895 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 129.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19887 GetRequests, 19573 SyntacticMatches, 44 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2907 ImplicationChecksByTransitivity, 11.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127439occurred in iteration=13, 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: 12.8s AutomataMinimizationTime, 13 MinimizatonAttempts, 20524 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 4.5s SatisfiabilityAnalysisTime, 29.8s InterpolantComputationTime, 16675 NumberOfCodeBlocks, 16675 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 26381 ConstructedInterpolants, 2 QuantifiedInterpolants, 69373230 SizeOfPredicates, 42 NumberOfNonLiveVariables, 13871 ConjunctsInSsa, 168 ConjunctsInUnsatCore, 48 InterpolantComputations, 7 PerfectInterpolantSequences, 26917/31868 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/Problem15_label17_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-48-44-983.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label17_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-48-44-983.csv Completed graceful shutdown