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/Problem04_label41_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 10:23:40,163 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 10:23:40,165 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 10:23:40,182 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 10:23:40,182 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 10:23:40,183 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 10:23:40,184 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 10:23:40,186 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 10:23:40,188 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 10:23:40,189 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 10:23:40,190 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 10:23:40,190 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 10:23:40,191 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 10:23:40,192 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 10:23:40,193 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 10:23:40,194 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 10:23:40,195 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 10:23:40,197 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 10:23:40,199 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 10:23:40,200 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 10:23:40,201 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 10:23:40,203 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 10:23:40,207 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 10:23:40,207 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 10:23:40,208 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 10:23:40,209 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 10:23:40,212 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 10:23:40,213 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 10:23:40,217 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 10:23:40,221 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 10:23:40,222 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 10:23:40,223 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 10:23:40,223 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 10:23:40,223 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 10:23:40,224 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 10:23:40,225 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 10:23:40,225 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 10:23:40,246 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 10:23:40,246 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 10:23:40,247 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 10:23:40,247 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 10:23:40,248 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 10:23:40,248 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 10:23:40,248 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 10:23:40,248 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 10:23:40,248 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 10:23:40,249 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 10:23:40,249 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 10:23:40,249 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 10:23:40,250 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 10:23:40,250 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 10:23:40,250 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 10:23:40,250 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 10:23:40,251 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 10:23:40,251 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 10:23:40,251 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 10:23:40,251 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 10:23:40,251 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 10:23:40,252 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 10:23:40,252 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 10:23:40,252 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 10:23:40,252 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 10:23:40,252 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 10:23:40,253 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 10:23:40,253 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 10:23:40,253 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 10:23:40,253 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 10:23:40,253 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 10:23:40,254 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 10:23:40,254 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 10:23:40,254 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 10:23:40,299 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 10:23:40,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 10:23:40,324 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 10:23:40,326 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 10:23:40,326 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 10:23:40,327 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label41_true-unreach-call.c [2018-09-18 10:23:40,678 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcb2674e1/44051ba837ee4906a986891c3beeb0bc/FLAG28e56aefd [2018-09-18 10:23:41,208 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 10:23:41,210 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label41_true-unreach-call.c [2018-09-18 10:23:41,259 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcb2674e1/44051ba837ee4906a986891c3beeb0bc/FLAG28e56aefd [2018-09-18 10:23:41,281 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcb2674e1/44051ba837ee4906a986891c3beeb0bc [2018-09-18 10:23:41,293 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 10:23:41,299 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 10:23:41,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 10:23:41,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 10:23:41,311 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 10:23:41,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:23:41" (1/1) ... [2018-09-18 10:23:41,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@489bfad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:23:41, skipping insertion in model container [2018-09-18 10:23:41,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:23:41" (1/1) ... [2018-09-18 10:23:41,332 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 10:23:42,687 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:23:42,708 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 10:23:43,647 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:23:43,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:23:43 WrapperNode [2018-09-18 10:23:43,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 10:23:43,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 10:23:43,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 10:23:43,809 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 10:23:43,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:23:43" (1/1) ... [2018-09-18 10:23:43,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:23:43" (1/1) ... [2018-09-18 10:23:43,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 10:23:43,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 10:23:43,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 10:23:43,959 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 10:23:44,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:23:43" (1/1) ... [2018-09-18 10:23:44,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:23:43" (1/1) ... [2018-09-18 10:23:44,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:23:43" (1/1) ... [2018-09-18 10:23:44,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:23:43" (1/1) ... [2018-09-18 10:23:44,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:23:43" (1/1) ... [2018-09-18 10:23:44,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:23:43" (1/1) ... [2018-09-18 10:23:44,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:23:43" (1/1) ... [2018-09-18 10:23:44,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 10:23:44,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 10:23:44,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 10:23:44,605 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 10:23:44,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:23:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 10:23:44,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 10:23:44,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 10:23:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 10:23:44,682 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 10:23:44,682 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 10:23:44,682 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 10:23:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 10:23:44,683 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 10:23:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 10:23:44,683 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 10:23:44,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 10:23:44,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 10:23:44,684 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 10:23:44,684 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 10:23:56,034 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 10:23:56,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:23:56 BoogieIcfgContainer [2018-09-18 10:23:56,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 10:23:56,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 10:23:56,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 10:23:56,040 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 10:23:56,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 10:23:41" (1/3) ... [2018-09-18 10:23:56,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c775b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:23:56, skipping insertion in model container [2018-09-18 10:23:56,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:23:43" (2/3) ... [2018-09-18 10:23:56,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c775b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:23:56, skipping insertion in model container [2018-09-18 10:23:56,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:23:56" (3/3) ... [2018-09-18 10:23:56,045 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label41_true-unreach-call.c [2018-09-18 10:23:56,056 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 10:23:56,067 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 10:23:56,148 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 10:23:56,149 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 10:23:56,149 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 10:23:56,149 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 10:23:56,149 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 10:23:56,149 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 10:23:56,149 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 10:23:56,150 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 10:23:56,150 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 10:23:56,189 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-09-18 10:23:56,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2018-09-18 10:23:56,239 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:23:56,241 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:23:56,244 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:23:56,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1045443342, now seen corresponding path program 1 times [2018-09-18 10:23:56,255 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:23:56,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:23:56,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:23:56,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:23:56,304 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:23:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:23:57,666 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:23:58,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:23:58,519 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:23:58,519 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 10:23:58,519 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:23:58,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:23:58,545 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:23:58,545 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:23:58,547 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 3 states. [2018-09-18 10:24:05,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:24:05,308 INFO L93 Difference]: Finished difference Result 2647 states and 5102 transitions. [2018-09-18 10:24:05,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:24:05,311 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 824 [2018-09-18 10:24:05,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:24:05,356 INFO L225 Difference]: With dead ends: 2647 [2018-09-18 10:24:05,357 INFO L226 Difference]: Without dead ends: 1738 [2018-09-18 10:24:05,369 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:24:05,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-09-18 10:24:05,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2018-09-18 10:24:05,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2018-09-18 10:24:05,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3133 transitions. [2018-09-18 10:24:05,567 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3133 transitions. Word has length 824 [2018-09-18 10:24:05,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:24:05,570 INFO L480 AbstractCegarLoop]: Abstraction has 1738 states and 3133 transitions. [2018-09-18 10:24:05,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:24:05,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3133 transitions. [2018-09-18 10:24:05,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 841 [2018-09-18 10:24:05,602 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:24:05,603 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:24:05,603 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:24:05,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1700434297, now seen corresponding path program 1 times [2018-09-18 10:24:05,604 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:24:05,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:24:05,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:24:05,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:24:05,606 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:24:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:24:05,957 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-09-18 10:24:06,768 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:24:06,769 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:24:06,770 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 10:24:06,770 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:24:06,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:24:06,776 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:24:06,776 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 10:24:06,777 INFO L87 Difference]: Start difference. First operand 1738 states and 3133 transitions. Second operand 6 states. [2018-09-18 10:24:07,026 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-09-18 10:24:17,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:24:17,146 INFO L93 Difference]: Finished difference Result 5285 states and 9647 transitions. [2018-09-18 10:24:17,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 10:24:17,147 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 840 [2018-09-18 10:24:17,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:24:17,173 INFO L225 Difference]: With dead ends: 5285 [2018-09-18 10:24:17,173 INFO L226 Difference]: Without dead ends: 3553 [2018-09-18 10:24:17,181 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 10:24:17,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3553 states. [2018-09-18 10:24:17,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3553 to 3489. [2018-09-18 10:24:17,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3489 states. [2018-09-18 10:24:17,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3489 states to 3489 states and 6194 transitions. [2018-09-18 10:24:17,318 INFO L78 Accepts]: Start accepts. Automaton has 3489 states and 6194 transitions. Word has length 840 [2018-09-18 10:24:17,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:24:17,319 INFO L480 AbstractCegarLoop]: Abstraction has 3489 states and 6194 transitions. [2018-09-18 10:24:17,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:24:17,320 INFO L276 IsEmpty]: Start isEmpty. Operand 3489 states and 6194 transitions. [2018-09-18 10:24:17,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 854 [2018-09-18 10:24:17,355 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:24:17,355 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:24:17,356 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:24:17,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1362024261, now seen corresponding path program 1 times [2018-09-18 10:24:17,357 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:24:17,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:24:17,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:24:17,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:24:17,359 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:24:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:24:17,736 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:24:18,234 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:24:18,235 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:24:18,235 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 10:24:18,235 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:24:18,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:24:18,237 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:24:18,237 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 10:24:18,237 INFO L87 Difference]: Start difference. First operand 3489 states and 6194 transitions. Second operand 6 states. [2018-09-18 10:24:24,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:24:24,764 INFO L93 Difference]: Finished difference Result 8886 states and 15694 transitions. [2018-09-18 10:24:24,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:24:24,773 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 853 [2018-09-18 10:24:24,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:24:24,807 INFO L225 Difference]: With dead ends: 8886 [2018-09-18 10:24:24,808 INFO L226 Difference]: Without dead ends: 5403 [2018-09-18 10:24:24,818 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 10:24:24,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5403 states. [2018-09-18 10:24:24,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5403 to 5372. [2018-09-18 10:24:24,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5372 states. [2018-09-18 10:24:24,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5372 states to 5372 states and 8379 transitions. [2018-09-18 10:24:24,973 INFO L78 Accepts]: Start accepts. Automaton has 5372 states and 8379 transitions. Word has length 853 [2018-09-18 10:24:24,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:24:24,974 INFO L480 AbstractCegarLoop]: Abstraction has 5372 states and 8379 transitions. [2018-09-18 10:24:24,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:24:24,974 INFO L276 IsEmpty]: Start isEmpty. Operand 5372 states and 8379 transitions. [2018-09-18 10:24:24,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2018-09-18 10:24:24,997 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:24:24,998 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:24:24,998 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:24:24,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1178781660, now seen corresponding path program 1 times [2018-09-18 10:24:24,999 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:24:25,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:24:25,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:24:25,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:24:25,001 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:24:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:24:25,573 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:24:25,574 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:24:25,574 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:24:25,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:24:25,589 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:24:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:24:25,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:24:26,879 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:24:26,880 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:24:28,172 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:24:28,194 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 10:24:28,194 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-09-18 10:24:28,194 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:24:28,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:24:28,196 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:24:28,197 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-18 10:24:28,197 INFO L87 Difference]: Start difference. First operand 5372 states and 8379 transitions. Second operand 3 states. [2018-09-18 10:24:33,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:24:33,012 INFO L93 Difference]: Finished difference Result 15937 states and 25473 transitions. [2018-09-18 10:24:33,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:24:33,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 860 [2018-09-18 10:24:33,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:24:33,074 INFO L225 Difference]: With dead ends: 15937 [2018-09-18 10:24:33,075 INFO L226 Difference]: Without dead ends: 10571 [2018-09-18 10:24:33,094 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1725 GetRequests, 1715 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-18 10:24:33,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10571 states. [2018-09-18 10:24:33,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10571 to 10571. [2018-09-18 10:24:33,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10571 states. [2018-09-18 10:24:33,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10571 states to 10571 states and 16663 transitions. [2018-09-18 10:24:33,387 INFO L78 Accepts]: Start accepts. Automaton has 10571 states and 16663 transitions. Word has length 860 [2018-09-18 10:24:33,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:24:33,388 INFO L480 AbstractCegarLoop]: Abstraction has 10571 states and 16663 transitions. [2018-09-18 10:24:33,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:24:33,389 INFO L276 IsEmpty]: Start isEmpty. Operand 10571 states and 16663 transitions. [2018-09-18 10:24:33,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2018-09-18 10:24:33,430 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:24:33,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:24:33,432 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:24:33,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1147341953, now seen corresponding path program 1 times [2018-09-18 10:24:33,432 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:24:33,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:24:33,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:24:33,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:24:33,436 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:24:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:24:33,750 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:24:34,799 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:24:34,800 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:24:34,800 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 10:24:34,800 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:24:34,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:24:34,804 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:24:34,804 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 10:24:34,805 INFO L87 Difference]: Start difference. First operand 10571 states and 16663 transitions. Second operand 6 states. [2018-09-18 10:24:41,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:24:41,966 INFO L93 Difference]: Finished difference Result 26800 states and 43535 transitions. [2018-09-18 10:24:41,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:24:41,968 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 887 [2018-09-18 10:24:41,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:24:42,044 INFO L225 Difference]: With dead ends: 26800 [2018-09-18 10:24:42,044 INFO L226 Difference]: Without dead ends: 16235 [2018-09-18 10:24:42,085 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 10:24:42,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16235 states. [2018-09-18 10:24:42,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16235 to 16078. [2018-09-18 10:24:42,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16078 states. [2018-09-18 10:24:42,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16078 states to 16078 states and 24157 transitions. [2018-09-18 10:24:42,467 INFO L78 Accepts]: Start accepts. Automaton has 16078 states and 24157 transitions. Word has length 887 [2018-09-18 10:24:42,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:24:42,467 INFO L480 AbstractCegarLoop]: Abstraction has 16078 states and 24157 transitions. [2018-09-18 10:24:42,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:24:42,468 INFO L276 IsEmpty]: Start isEmpty. Operand 16078 states and 24157 transitions. [2018-09-18 10:24:42,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 897 [2018-09-18 10:24:42,522 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:24:42,522 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:24:42,523 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:24:42,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1919586114, now seen corresponding path program 1 times [2018-09-18 10:24:42,523 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:24:42,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:24:42,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:24:42,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:24:42,525 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:24:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:24:43,691 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:24:43,692 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:24:43,692 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:24:43,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:24:43,714 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:24:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:24:44,020 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:24:44,929 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:24:44,930 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:24:45,762 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:24:45,785 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:24:45,785 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 [2018-09-18 10:24:45,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:24:45,973 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:24:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:24:46,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:24:47,758 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:24:47,758 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:24:48,618 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:24:48,621 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:24:48,621 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-18 10:24:48,622 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:24:48,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:24:48,624 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:24:48,624 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-18 10:24:48,624 INFO L87 Difference]: Start difference. First operand 16078 states and 24157 transitions. Second operand 9 states. [2018-09-18 10:25:07,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:25:07,463 INFO L93 Difference]: Finished difference Result 78460 states and 141025 transitions. [2018-09-18 10:25:07,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-18 10:25:07,463 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 896 [2018-09-18 10:25:07,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:25:07,828 INFO L225 Difference]: With dead ends: 78460 [2018-09-18 10:25:07,828 INFO L226 Difference]: Without dead ends: 62388 [2018-09-18 10:25:07,939 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3633 GetRequests, 3590 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=365, Invalid=1441, Unknown=0, NotChecked=0, Total=1806 [2018-09-18 10:25:07,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62388 states. [2018-09-18 10:25:09,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62388 to 56200. [2018-09-18 10:25:09,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56200 states. [2018-09-18 10:25:09,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56200 states to 56200 states and 80098 transitions. [2018-09-18 10:25:09,897 INFO L78 Accepts]: Start accepts. Automaton has 56200 states and 80098 transitions. Word has length 896 [2018-09-18 10:25:09,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:25:09,898 INFO L480 AbstractCegarLoop]: Abstraction has 56200 states and 80098 transitions. [2018-09-18 10:25:09,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:25:09,898 INFO L276 IsEmpty]: Start isEmpty. Operand 56200 states and 80098 transitions. [2018-09-18 10:25:10,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1471 [2018-09-18 10:25:10,076 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:25:10,078 INFO L376 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:25:10,078 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:25:10,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1469243842, now seen corresponding path program 1 times [2018-09-18 10:25:10,079 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:25:10,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:25:10,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:25:10,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:25:10,080 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:25:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:25:13,085 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 641 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:25:13,086 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:25:13,086 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 [2018-09-18 10:25:13,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:25:13,094 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:25:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:25:13,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:25:14,869 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 637 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-18 10:25:14,870 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:25:16,531 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 637 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-18 10:25:16,555 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 10:25:16,556 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-09-18 10:25:16,556 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:25:16,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:25:16,558 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:25:16,558 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-18 10:25:16,558 INFO L87 Difference]: Start difference. First operand 56200 states and 80098 transitions. Second operand 3 states. [2018-09-18 10:25:22,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:25:22,053 INFO L93 Difference]: Finished difference Result 111513 states and 158984 transitions. [2018-09-18 10:25:22,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:25:22,054 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1470 [2018-09-18 10:25:22,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:25:22,280 INFO L225 Difference]: With dead ends: 111513 [2018-09-18 10:25:22,281 INFO L226 Difference]: Without dead ends: 55319 [2018-09-18 10:25:22,386 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2949 GetRequests, 2939 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-18 10:25:22,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55319 states. [2018-09-18 10:25:23,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55319 to 55269. [2018-09-18 10:25:23,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55269 states. [2018-09-18 10:25:23,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55269 states to 55269 states and 74447 transitions. [2018-09-18 10:25:23,511 INFO L78 Accepts]: Start accepts. Automaton has 55269 states and 74447 transitions. Word has length 1470 [2018-09-18 10:25:23,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:25:23,514 INFO L480 AbstractCegarLoop]: Abstraction has 55269 states and 74447 transitions. [2018-09-18 10:25:23,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:25:23,515 INFO L276 IsEmpty]: Start isEmpty. Operand 55269 states and 74447 transitions. [2018-09-18 10:25:23,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1643 [2018-09-18 10:25:23,662 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:25:23,663 INFO L376 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 10:25:23,663 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:25:23,664 INFO L82 PathProgramCache]: Analyzing trace with hash -149796092, now seen corresponding path program 1 times [2018-09-18 10:25:23,664 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:25:23,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:25:23,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:25:23,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:25:23,665 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:25:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:25:25,554 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 821 proven. 28 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-18 10:25:25,555 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:25:25,555 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:25:25,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:25:25,564 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:25:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:25:26,045 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:25:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 821 trivial. 0 not checked. [2018-09-18 10:25:27,606 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:25:29,015 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 821 proven. 28 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-18 10:25:29,038 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:25:29,038 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:25:29,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:25:29,055 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:25:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:25:30,234 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:25:31,396 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 834 trivial. 0 not checked. [2018-09-18 10:25:31,397 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:25:32,574 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 810 proven. 66 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-18 10:25:32,578 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:25:32,580 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-18 10:25:32,580 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:25:32,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:25:32,582 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:25:32,582 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-18 10:25:32,582 INFO L87 Difference]: Start difference. First operand 55269 states and 74447 transitions. Second operand 9 states. [2018-09-18 10:25:47,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:25:47,283 INFO L93 Difference]: Finished difference Result 177648 states and 253912 transitions. [2018-09-18 10:25:47,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-18 10:25:47,283 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1642 [2018-09-18 10:25:47,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:25:47,780 INFO L225 Difference]: With dead ends: 177648 [2018-09-18 10:25:47,780 INFO L226 Difference]: Without dead ends: 122385 [2018-09-18 10:25:47,949 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6620 GetRequests, 6581 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=316, Invalid=1166, Unknown=0, NotChecked=0, Total=1482 [2018-09-18 10:25:48,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122385 states. [2018-09-18 10:25:50,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122385 to 119363. [2018-09-18 10:25:50,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119363 states. [2018-09-18 10:25:50,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119363 states to 119363 states and 152570 transitions. [2018-09-18 10:25:50,542 INFO L78 Accepts]: Start accepts. Automaton has 119363 states and 152570 transitions. Word has length 1642 [2018-09-18 10:25:50,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:25:50,543 INFO L480 AbstractCegarLoop]: Abstraction has 119363 states and 152570 transitions. [2018-09-18 10:25:50,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:25:50,543 INFO L276 IsEmpty]: Start isEmpty. Operand 119363 states and 152570 transitions. [2018-09-18 10:25:50,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1733 [2018-09-18 10:25:50,765 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:25:50,766 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 10:25:50,766 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:25:50,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1616846437, now seen corresponding path program 1 times [2018-09-18 10:25:50,767 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:25:50,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:25:50,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:25:50,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:25:50,768 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:25:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:25:51,280 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:25:53,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 890 proven. 92 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-09-18 10:25:53,325 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:25:53,325 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:25:53,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:25:53,335 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:25:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:25:53,859 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:25:55,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2018-09-18 10:25:55,093 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:25:56,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 890 proven. 92 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-09-18 10:25:56,288 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:25:56,289 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-18 10:25:56,289 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:25:56,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:25:56,291 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:25:56,291 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-18 10:25:56,291 INFO L87 Difference]: Start difference. First operand 119363 states and 152570 transitions. Second operand 5 states. [2018-09-18 10:26:03,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:26:03,470 INFO L93 Difference]: Finished difference Result 256853 states and 333698 transitions. [2018-09-18 10:26:03,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:26:03,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1732 [2018-09-18 10:26:03,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:26:03,927 INFO L225 Difference]: With dead ends: 256853 [2018-09-18 10:26:03,927 INFO L226 Difference]: Without dead ends: 137496 [2018-09-18 10:26:04,110 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3473 GetRequests, 3458 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-18 10:26:04,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137496 states. [2018-09-18 10:26:06,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137496 to 136206. [2018-09-18 10:26:06,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136206 states. [2018-09-18 10:26:06,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136206 states to 136206 states and 164545 transitions. [2018-09-18 10:26:06,760 INFO L78 Accepts]: Start accepts. Automaton has 136206 states and 164545 transitions. Word has length 1732 [2018-09-18 10:26:06,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:26:06,761 INFO L480 AbstractCegarLoop]: Abstraction has 136206 states and 164545 transitions. [2018-09-18 10:26:06,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:26:06,761 INFO L276 IsEmpty]: Start isEmpty. Operand 136206 states and 164545 transitions. [2018-09-18 10:26:06,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1884 [2018-09-18 10:26:06,929 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:26:06,930 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 10:26:06,930 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:26:06,930 INFO L82 PathProgramCache]: Analyzing trace with hash -243134498, now seen corresponding path program 1 times [2018-09-18 10:26:06,931 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:26:06,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:26:06,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:26:06,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:26:06,932 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:26:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:26:09,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 1097 proven. 98 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2018-09-18 10:26:09,546 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:26:09,546 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:26:09,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:26:09,557 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:26:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:26:10,123 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:26:11,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 869 proven. 2 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2018-09-18 10:26:11,495 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:26:13,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 1241 proven. 140 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2018-09-18 10:26:13,110 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:26:13,110 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 [2018-09-18 10:26:13,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:26:13,126 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:26:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:26:14,429 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:26:16,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 869 proven. 2 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2018-09-18 10:26:16,062 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:26:17,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 1241 proven. 140 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2018-09-18 10:26:17,493 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:26:17,495 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 17 [2018-09-18 10:26:17,496 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:26:17,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-18 10:26:17,498 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-18 10:26:17,498 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-09-18 10:26:17,499 INFO L87 Difference]: Start difference. First operand 136206 states and 164545 transitions. Second operand 10 states. [2018-09-18 10:26:38,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:26:38,929 INFO L93 Difference]: Finished difference Result 280841 states and 367870 transitions. [2018-09-18 10:26:38,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-09-18 10:26:38,929 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1883 [2018-09-18 10:26:38,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:26:39,539 INFO L225 Difference]: With dead ends: 280841 [2018-09-18 10:26:39,539 INFO L226 Difference]: Without dead ends: 145476 [2018-09-18 10:26:39,687 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7639 GetRequests, 7563 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1844 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1036, Invalid=4816, Unknown=0, NotChecked=0, Total=5852 [2018-09-18 10:26:39,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145476 states. [2018-09-18 10:26:42,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145476 to 141124. [2018-09-18 10:26:42,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141124 states. [2018-09-18 10:26:43,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141124 states to 141124 states and 168177 transitions. [2018-09-18 10:26:43,205 INFO L78 Accepts]: Start accepts. Automaton has 141124 states and 168177 transitions. Word has length 1883 [2018-09-18 10:26:43,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:26:43,205 INFO L480 AbstractCegarLoop]: Abstraction has 141124 states and 168177 transitions. [2018-09-18 10:26:43,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-18 10:26:43,206 INFO L276 IsEmpty]: Start isEmpty. Operand 141124 states and 168177 transitions. [2018-09-18 10:26:43,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2053 [2018-09-18 10:26:43,390 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:26:43,391 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 10:26:43,392 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:26:43,393 INFO L82 PathProgramCache]: Analyzing trace with hash 919846237, now seen corresponding path program 1 times [2018-09-18 10:26:43,393 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:26:43,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:26:43,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:26:43,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:26:43,394 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:26:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:26:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1896 backedges. 1720 proven. 2 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-09-18 10:26:49,267 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:26:49,267 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 [2018-09-18 10:26:49,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:26:49,276 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:26:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:26:49,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:26:51,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1896 backedges. 1216 proven. 0 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2018-09-18 10:26:51,686 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:26:53,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1896 backedges. 1216 proven. 0 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2018-09-18 10:26:53,621 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 10:26:53,622 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-09-18 10:26:53,623 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:26:53,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:26:53,624 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:26:53,624 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-18 10:26:53,625 INFO L87 Difference]: Start difference. First operand 141124 states and 168177 transitions. Second operand 3 states. [2018-09-18 10:26:59,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:26:59,285 INFO L93 Difference]: Finished difference Result 279762 states and 334138 transitions. [2018-09-18 10:26:59,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:26:59,285 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2052 [2018-09-18 10:26:59,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:26:59,287 INFO L225 Difference]: With dead ends: 279762 [2018-09-18 10:26:59,287 INFO L226 Difference]: Without dead ends: 0 [2018-09-18 10:26:59,563 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4116 GetRequests, 4104 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-18 10:26:59,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-18 10:26:59,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-18 10:26:59,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-18 10:26:59,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-18 10:26:59,566 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2052 [2018-09-18 10:26:59,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:26:59,566 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-18 10:26:59,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:26:59,567 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-18 10:26:59,567 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-18 10:26:59,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-18 10:27:01,302 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:01,303 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:01,429 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:01,493 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:01,557 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:01,558 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:01,560 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:01,574 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:01,574 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:01,575 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:01,576 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:01,599 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:01,643 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:01,654 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:01,665 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:01,728 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:01,739 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:01,745 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:01,945 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:01,952 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:02,018 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:02,069 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:02,070 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:02,079 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:02,196 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:02,874 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:02,891 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:02,892 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:02,892 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:02,892 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:02,914 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:02,923 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:03,010 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:03,025 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:03,040 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:03,271 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:03,284 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:03,483 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:03,582 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:03,626 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:03,716 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:03,836 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:04,427 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:05,659 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:05,695 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:05,799 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:05,815 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:05,834 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:05,834 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:05,835 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:05,835 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:05,928 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:05,997 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:06,028 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:06,057 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:06,059 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:06,060 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:06,251 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:06,524 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:06,576 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:06,744 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:06,899 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:07,065 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:07,274 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:07,284 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:07,504 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:07,527 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:07,538 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:08,163 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:08,223 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:08,262 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:08,449 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:08,641 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:08,642 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:08,643 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:08,644 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:08,710 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:08,834 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:08,861 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:09,319 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:09,474 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:09,521 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:09,632 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:09,822 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:09,933 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:11,119 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:11,470 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:11,489 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:12,239 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:12,331 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:12,965 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:14,235 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:14,461 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:14,713 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:14,829 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:15,203 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:15,487 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:15,541 WARN L178 SmtUtils]: Spent 14.36 s on a formula simplification. DAG size of input: 1755 DAG size of output: 1452 [2018-09-18 10:27:15,874 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:15,875 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:15,941 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:15,978 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,010 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,011 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,012 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,019 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,020 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,020 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,021 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,034 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,058 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,064 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,070 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,103 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,109 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,112 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,219 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,223 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,258 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,286 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,287 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,293 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,365 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,857 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,875 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,875 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,875 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,876 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,896 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,907 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,968 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,978 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:16,989 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:17,183 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:17,195 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:17,384 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:17,492 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:17,541 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:17,637 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:17,750 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 10:27:18,361 WARN L250 erpolLogProxyWrapper]: Already inconsistent. Received shutdown request... [2018-09-18 10:27:19,249 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-09-18 10:27:19,250 INFO L168 Benchmark]: Toolchain (without parser) took 217956.51 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -213.0 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-09-18 10:27:19,252 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 10:27:19,252 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2507.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 222.0 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. [2018-09-18 10:27:19,253 INFO L168 Benchmark]: Boogie Procedure Inliner took 150.35 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-18 10:27:19,254 INFO L168 Benchmark]: Boogie Preprocessor took 645.67 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 838.9 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 84.9 MB. Max. memory is 7.1 GB. [2018-09-18 10:27:19,255 INFO L168 Benchmark]: RCFGBuilder took 11431.02 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 162.5 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -111.5 MB). Peak memory consumption was 698.1 MB. Max. memory is 7.1 GB. [2018-09-18 10:27:19,255 INFO L168 Benchmark]: TraceAbstraction took 203212.91 ms. Allocated memory was 2.5 GB in the beginning and 4.0 GB in the end (delta: 1.5 GB). Free memory was 2.4 GB in the beginning and 1.6 GB in the end (delta: 751.6 MB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2018-09-18 10:27:19,261 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 2507.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 222.0 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 150.35 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 645.67 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 838.9 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 84.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11431.02 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 162.5 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -111.5 MB). Peak memory consumption was 698.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203212.91 ms. Allocated memory was 2.5 GB in the beginning and 4.0 GB in the end (delta: 1.5 GB). Free memory was 2.4 GB in the beginning and 1.6 GB in the end (delta: 751.6 MB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4790]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 1735. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem04_label41_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_10-27-19-277.csv Completed graceful shutdown