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/Problem06_label46_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 16:33:11,985 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 16:33:11,987 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 16:33:11,999 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 16:33:11,999 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 16:33:12,000 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 16:33:12,001 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 16:33:12,003 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 16:33:12,005 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 16:33:12,006 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 16:33:12,007 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 16:33:12,007 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 16:33:12,008 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 16:33:12,009 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 16:33:12,010 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 16:33:12,011 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 16:33:12,012 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 16:33:12,014 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 16:33:12,016 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 16:33:12,017 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 16:33:12,018 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 16:33:12,020 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 16:33:12,022 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 16:33:12,023 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 16:33:12,023 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 16:33:12,024 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 16:33:12,025 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 16:33:12,026 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 16:33:12,027 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 16:33:12,028 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 16:33:12,028 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 16:33:12,029 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 16:33:12,029 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 16:33:12,029 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 16:33:12,030 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 16:33:12,031 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 16:33:12,032 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 16:33:12,047 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 16:33:12,047 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 16:33:12,048 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 16:33:12,048 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 16:33:12,049 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 16:33:12,049 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 16:33:12,049 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 16:33:12,049 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 16:33:12,049 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 16:33:12,050 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 16:33:12,050 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 16:33:12,050 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 16:33:12,051 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 16:33:12,051 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 16:33:12,051 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 16:33:12,051 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 16:33:12,051 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 16:33:12,052 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 16:33:12,052 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 16:33:12,052 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 16:33:12,052 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 16:33:12,052 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 16:33:12,053 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 16:33:12,053 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 16:33:12,053 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 16:33:12,053 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 16:33:12,053 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 16:33:12,054 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 16:33:12,054 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 16:33:12,054 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 16:33:12,054 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 16:33:12,054 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 16:33:12,055 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 16:33:12,119 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 16:33:12,137 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 16:33:12,143 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 16:33:12,145 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 16:33:12,146 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 16:33:12,146 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label46_true-unreach-call.c [2018-09-14 16:33:12,502 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f48f67a5/4bbc164663ab41dcbc2eba4fc921eae4/FLAG5ddb048d2 [2018-09-14 16:33:13,156 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 16:33:13,157 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem06_label46_true-unreach-call.c [2018-09-14 16:33:13,230 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f48f67a5/4bbc164663ab41dcbc2eba4fc921eae4/FLAG5ddb048d2 [2018-09-14 16:33:13,252 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f48f67a5/4bbc164663ab41dcbc2eba4fc921eae4 [2018-09-14 16:33:13,266 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 16:33:13,269 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 16:33:13,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 16:33:13,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 16:33:13,280 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 16:33:13,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 04:33:13" (1/1) ... [2018-09-14 16:33:13,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10421fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:33:13, skipping insertion in model container [2018-09-14 16:33:13,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 04:33:13" (1/1) ... [2018-09-14 16:33:13,299 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 16:33:15,247 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 16:33:15,271 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 16:33:16,412 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 16:33:16,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:33:16 WrapperNode [2018-09-14 16:33:16,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 16:33:16,725 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 16:33:16,725 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 16:33:16,726 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 16:33:16,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:33:16" (1/1) ... [2018-09-14 16:33:17,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:33:16" (1/1) ... [2018-09-14 16:33:17,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 16:33:17,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 16:33:17,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 16:33:17,102 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 16:33:17,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:33:16" (1/1) ... [2018-09-14 16:33:17,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:33:16" (1/1) ... [2018-09-14 16:33:17,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:33:16" (1/1) ... [2018-09-14 16:33:17,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:33:16" (1/1) ... [2018-09-14 16:33:18,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:33:16" (1/1) ... [2018-09-14 16:33:18,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:33:16" (1/1) ... [2018-09-14 16:33:18,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:33:16" (1/1) ... [2018-09-14 16:33:18,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 16:33:18,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 16:33:18,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 16:33:18,221 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 16:33:18,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:33:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 16:33:18,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 16:33:18,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 16:33:18,297 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-09-14 16:33:18,298 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-09-14 16:33:18,298 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 16:33:18,298 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 16:33:18,298 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 16:33:18,298 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 16:33:18,298 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 16:33:18,299 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 16:33:18,299 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 16:33:18,299 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 16:33:18,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 16:33:18,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 16:33:18,301 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 16:33:18,301 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 16:33:30,578 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 16:33:30,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 04:33:30 BoogieIcfgContainer [2018-09-14 16:33:30,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 16:33:30,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 16:33:30,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 16:33:30,583 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 16:33:30,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 04:33:13" (1/3) ... [2018-09-14 16:33:30,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677ef6fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 04:33:30, skipping insertion in model container [2018-09-14 16:33:30,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:33:16" (2/3) ... [2018-09-14 16:33:30,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677ef6fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 04:33:30, skipping insertion in model container [2018-09-14 16:33:30,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 04:33:30" (3/3) ... [2018-09-14 16:33:30,587 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem06_label46_true-unreach-call.c [2018-09-14 16:33:30,595 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 16:33:30,603 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 16:33:30,671 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 16:33:30,672 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 16:33:30,672 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 16:33:30,672 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 16:33:30,673 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 16:33:30,673 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 16:33:30,673 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 16:33:30,673 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 16:33:30,673 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 16:33:30,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states. [2018-09-14 16:33:30,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 998 [2018-09-14 16:33:30,811 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:33:30,813 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:33:30,817 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:33:30,823 INFO L82 PathProgramCache]: Analyzing trace with hash 951710647, now seen corresponding path program 1 times [2018-09-14 16:33:30,826 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:33:30,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:33:30,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:33:30,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:33:30,877 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:33:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:33:34,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:33:34,171 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:33:34,171 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 16:33:34,171 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:33:34,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:33:34,194 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:33:34,194 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:33:34,197 INFO L87 Difference]: Start difference. First operand 1316 states. Second operand 3 states. [2018-09-14 16:33:43,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:33:43,268 INFO L93 Difference]: Finished difference Result 3715 states and 6960 transitions. [2018-09-14 16:33:43,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:33:43,270 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 997 [2018-09-14 16:33:43,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:33:43,324 INFO L225 Difference]: With dead ends: 3715 [2018-09-14 16:33:43,324 INFO L226 Difference]: Without dead ends: 2397 [2018-09-14 16:33:43,339 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 6 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:33:43,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2018-09-14 16:33:43,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 2366. [2018-09-14 16:33:43,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2366 states. [2018-09-14 16:33:43,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2366 states to 2366 states and 4363 transitions. [2018-09-14 16:33:43,521 INFO L78 Accepts]: Start accepts. Automaton has 2366 states and 4363 transitions. Word has length 997 [2018-09-14 16:33:43,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:33:43,528 INFO L480 AbstractCegarLoop]: Abstraction has 2366 states and 4363 transitions. [2018-09-14 16:33:43,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:33:43,528 INFO L276 IsEmpty]: Start isEmpty. Operand 2366 states and 4363 transitions. [2018-09-14 16:33:43,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1015 [2018-09-14 16:33:43,574 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:33:43,575 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:33:43,575 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:33:43,576 INFO L82 PathProgramCache]: Analyzing trace with hash 957543310, now seen corresponding path program 1 times [2018-09-14 16:33:43,576 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:33:43,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:33:43,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:33:43,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:33:43,578 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:33:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:33:45,184 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:33:46,511 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-14 16:33:46,512 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:33:46,512 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:33:46,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:33:46,521 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:33:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:33:47,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:33:48,537 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-14 16:33:48,537 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:33:50,137 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-14 16:33:50,160 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:33:50,161 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2018-09-14 16:33:50,161 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:33:50,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 16:33:50,164 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 16:33:50,164 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-14 16:33:50,164 INFO L87 Difference]: Start difference. First operand 2366 states and 4363 transitions. Second operand 4 states. [2018-09-14 16:33:59,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:33:59,445 INFO L93 Difference]: Finished difference Result 6862 states and 12842 transitions. [2018-09-14 16:33:59,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 16:33:59,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1014 [2018-09-14 16:33:59,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:33:59,487 INFO L225 Difference]: With dead ends: 6862 [2018-09-14 16:33:59,487 INFO L226 Difference]: Without dead ends: 4502 [2018-09-14 16:33:59,496 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2038 GetRequests, 2018 SyntacticMatches, 15 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-14 16:33:59,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4502 states. [2018-09-14 16:33:59,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4502 to 4483. [2018-09-14 16:33:59,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4483 states. [2018-09-14 16:33:59,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4483 states to 4483 states and 8022 transitions. [2018-09-14 16:33:59,625 INFO L78 Accepts]: Start accepts. Automaton has 4483 states and 8022 transitions. Word has length 1014 [2018-09-14 16:33:59,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:33:59,628 INFO L480 AbstractCegarLoop]: Abstraction has 4483 states and 8022 transitions. [2018-09-14 16:33:59,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 16:33:59,628 INFO L276 IsEmpty]: Start isEmpty. Operand 4483 states and 8022 transitions. [2018-09-14 16:33:59,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1019 [2018-09-14 16:33:59,658 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:33:59,659 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:33:59,660 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:33:59,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1123526230, now seen corresponding path program 1 times [2018-09-14 16:33:59,660 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:33:59,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:33:59,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:33:59,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:33:59,662 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:33:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:34:00,131 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:34:00,913 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:34:00,914 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:34:00,914 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 16:34:00,914 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:34:00,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:34:00,916 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:34:00,916 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 16:34:00,916 INFO L87 Difference]: Start difference. First operand 4483 states and 8022 transitions. Second operand 6 states. [2018-09-14 16:34:09,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:34:09,811 INFO L93 Difference]: Finished difference Result 13554 states and 24938 transitions. [2018-09-14 16:34:09,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:34:09,815 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1018 [2018-09-14 16:34:09,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:34:09,867 INFO L225 Difference]: With dead ends: 13554 [2018-09-14 16:34:09,867 INFO L226 Difference]: Without dead ends: 9077 [2018-09-14 16:34:09,884 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 [2018-09-14 16:34:09,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9077 states. [2018-09-14 16:34:10,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9077 to 8880. [2018-09-14 16:34:10,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8880 states. [2018-09-14 16:34:10,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8880 states to 8880 states and 15466 transitions. [2018-09-14 16:34:10,161 INFO L78 Accepts]: Start accepts. Automaton has 8880 states and 15466 transitions. Word has length 1018 [2018-09-14 16:34:10,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:34:10,162 INFO L480 AbstractCegarLoop]: Abstraction has 8880 states and 15466 transitions. [2018-09-14 16:34:10,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:34:10,162 INFO L276 IsEmpty]: Start isEmpty. Operand 8880 states and 15466 transitions. [2018-09-14 16:34:10,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1024 [2018-09-14 16:34:10,212 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:34:10,213 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:34:10,213 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:34:10,214 INFO L82 PathProgramCache]: Analyzing trace with hash 505606702, now seen corresponding path program 1 times [2018-09-14 16:34:10,214 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:34:10,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:34:10,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:34:10,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:34:10,215 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:34:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:34:10,614 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:34:11,517 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:34:11,517 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:34:11,518 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:34:11,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:34:11,536 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:34:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:34:12,048 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:34:12,734 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-09-14 16:34:12,734 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:34:13,363 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:34:13,386 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:34:13,386 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2018-09-14 16:34:13,386 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:34:13,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:34:13,389 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:34:13,389 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-14 16:34:13,390 INFO L87 Difference]: Start difference. First operand 8880 states and 15466 transitions. Second operand 5 states. [2018-09-14 16:34:22,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:34:22,339 INFO L93 Difference]: Finished difference Result 22442 states and 40238 transitions. [2018-09-14 16:34:22,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:34:22,345 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1023 [2018-09-14 16:34:22,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:34:22,412 INFO L225 Difference]: With dead ends: 22442 [2018-09-14 16:34:22,412 INFO L226 Difference]: Without dead ends: 13568 [2018-09-14 16:34:22,443 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2054 GetRequests, 2040 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-09-14 16:34:22,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13568 states. [2018-09-14 16:34:22,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13568 to 13292. [2018-09-14 16:34:22,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13292 states. [2018-09-14 16:34:22,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13292 states to 13292 states and 21354 transitions. [2018-09-14 16:34:22,793 INFO L78 Accepts]: Start accepts. Automaton has 13292 states and 21354 transitions. Word has length 1023 [2018-09-14 16:34:22,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:34:22,794 INFO L480 AbstractCegarLoop]: Abstraction has 13292 states and 21354 transitions. [2018-09-14 16:34:22,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:34:22,794 INFO L276 IsEmpty]: Start isEmpty. Operand 13292 states and 21354 transitions. [2018-09-14 16:34:22,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1033 [2018-09-14 16:34:22,855 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:34:22,856 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:34:22,857 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:34:22,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1533455380, now seen corresponding path program 1 times [2018-09-14 16:34:22,857 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:34:22,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:34:22,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:34:22,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:34:22,859 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:34:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:34:24,724 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-09-14 16:34:24,724 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:34:24,724 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 16:34:24,725 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:34:24,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:34:24,726 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:34:24,726 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:34:24,726 INFO L87 Difference]: Start difference. First operand 13292 states and 21354 transitions. Second operand 3 states. [2018-09-14 16:34:32,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:34:32,143 INFO L93 Difference]: Finished difference Result 39301 states and 66307 transitions. [2018-09-14 16:34:32,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:34:32,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1032 [2018-09-14 16:34:32,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:34:32,265 INFO L225 Difference]: With dead ends: 39301 [2018-09-14 16:34:32,266 INFO L226 Difference]: Without dead ends: 26015 [2018-09-14 16:34:32,307 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:34:32,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26015 states. [2018-09-14 16:34:32,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26015 to 25994. [2018-09-14 16:34:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25994 states. [2018-09-14 16:34:32,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25994 states to 25994 states and 41082 transitions. [2018-09-14 16:34:32,903 INFO L78 Accepts]: Start accepts. Automaton has 25994 states and 41082 transitions. Word has length 1032 [2018-09-14 16:34:32,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:34:32,905 INFO L480 AbstractCegarLoop]: Abstraction has 25994 states and 41082 transitions. [2018-09-14 16:34:32,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:34:32,905 INFO L276 IsEmpty]: Start isEmpty. Operand 25994 states and 41082 transitions. [2018-09-14 16:34:33,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1054 [2018-09-14 16:34:33,015 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:34:33,016 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:34:33,016 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:34:33,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1270256022, now seen corresponding path program 1 times [2018-09-14 16:34:33,017 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:34:33,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:34:33,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:34:33,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:34:33,018 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:34:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:34:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 53 proven. 32 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-09-14 16:34:34,677 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:34:34,677 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:34:34,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:34:34,690 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:34:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:34:35,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:34:36,234 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-09-14 16:34:36,235 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:34:36,812 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 59 proven. 14 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-09-14 16:34:36,835 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:34:36,835 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 5 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:34:36,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:34:36,852 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:34:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:34:38,082 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:34:38,674 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-09-14 16:34:38,675 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:34:39,321 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 59 proven. 14 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-09-14 16:34:39,327 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:34:39,327 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5, 5, 5] total 20 [2018-09-14 16:34:39,327 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:34:39,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-14 16:34:39,329 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-14 16:34:39,329 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2018-09-14 16:34:39,330 INFO L87 Difference]: Start difference. First operand 25994 states and 41082 transitions. Second operand 12 states. [2018-09-14 16:35:13,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:35:13,073 INFO L93 Difference]: Finished difference Result 117367 states and 225708 transitions. [2018-09-14 16:35:13,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-14 16:35:13,073 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1053 [2018-09-14 16:35:13,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:35:13,728 INFO L225 Difference]: With dead ends: 117367 [2018-09-14 16:35:13,728 INFO L226 Difference]: Without dead ends: 91379 [2018-09-14 16:35:13,834 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4280 GetRequests, 4231 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=449, Invalid=2001, Unknown=0, NotChecked=0, Total=2450 [2018-09-14 16:35:13,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91379 states. [2018-09-14 16:35:16,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91379 to 91030. [2018-09-14 16:35:16,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91030 states. [2018-09-14 16:35:16,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91030 states to 91030 states and 162411 transitions. [2018-09-14 16:35:16,859 INFO L78 Accepts]: Start accepts. Automaton has 91030 states and 162411 transitions. Word has length 1053 [2018-09-14 16:35:16,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:35:16,860 INFO L480 AbstractCegarLoop]: Abstraction has 91030 states and 162411 transitions. [2018-09-14 16:35:16,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-14 16:35:16,860 INFO L276 IsEmpty]: Start isEmpty. Operand 91030 states and 162411 transitions. [2018-09-14 16:35:17,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1056 [2018-09-14 16:35:17,323 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:35:17,324 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:35:17,325 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:35:17,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1653015803, now seen corresponding path program 1 times [2018-09-14 16:35:17,325 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:35:17,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:35:17,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:35:17,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:35:17,327 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:35:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:35:18,710 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:35:18,710 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:35:18,711 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:35:18,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:35:18,720 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:35:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:35:19,237 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:35:20,322 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-09-14 16:35:20,322 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:35:21,255 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-09-14 16:35:21,280 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 16:35:21,281 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-09-14 16:35:21,281 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:35:21,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:35:21,282 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:35:21,282 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-14 16:35:21,283 INFO L87 Difference]: Start difference. First operand 91030 states and 162411 transitions. Second operand 3 states. [2018-09-14 16:35:29,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:35:29,677 INFO L93 Difference]: Finished difference Result 226229 states and 423666 transitions. [2018-09-14 16:35:29,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:35:29,678 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1055 [2018-09-14 16:35:29,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:35:30,766 INFO L225 Difference]: With dead ends: 226229 [2018-09-14 16:35:30,766 INFO L226 Difference]: Without dead ends: 135205 [2018-09-14 16:35:31,073 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2115 GetRequests, 2104 SyntacticMatches, 6 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-14 16:35:31,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135205 states. [2018-09-14 16:35:34,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135205 to 135133. [2018-09-14 16:35:34,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135133 states. [2018-09-14 16:35:35,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135133 states to 135133 states and 242408 transitions. [2018-09-14 16:35:35,193 INFO L78 Accepts]: Start accepts. Automaton has 135133 states and 242408 transitions. Word has length 1055 [2018-09-14 16:35:35,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:35:35,194 INFO L480 AbstractCegarLoop]: Abstraction has 135133 states and 242408 transitions. [2018-09-14 16:35:35,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:35:35,195 INFO L276 IsEmpty]: Start isEmpty. Operand 135133 states and 242408 transitions. [2018-09-14 16:35:35,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1067 [2018-09-14 16:35:35,667 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:35:35,668 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:35:35,668 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:35:35,669 INFO L82 PathProgramCache]: Analyzing trace with hash -115060677, now seen corresponding path program 1 times [2018-09-14 16:35:35,669 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:35:35,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:35:35,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:35:35,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:35:35,670 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:35:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:35:37,292 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 95 proven. 14 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-09-14 16:35:37,293 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:35:37,293 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:35:37,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:35:37,301 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:35:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:35:37,830 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:35:38,416 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-09-14 16:35:38,417 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:35:39,437 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 95 proven. 14 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-09-14 16:35:39,460 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:35:39,460 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:35:39,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:35:39,477 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:35:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:35:40,696 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:35:42,007 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-09-14 16:35:42,007 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:35:42,545 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 95 proven. 14 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-09-14 16:35:42,550 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:35:42,550 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-14 16:35:42,551 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:35:42,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 16:35:42,552 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 16:35:42,552 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-09-14 16:35:42,553 INFO L87 Difference]: Start difference. First operand 135133 states and 242408 transitions. Second operand 9 states. Received shutdown request... [2018-09-14 16:36:47,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-14 16:36:47,227 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 16:36:47,234 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 16:36:47,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 04:36:47 BoogieIcfgContainer [2018-09-14 16:36:47,234 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 16:36:47,235 INFO L168 Benchmark]: Toolchain (without parser) took 213968.75 ms. Allocated memory was 1.5 GB in the beginning and 5.1 GB in the end (delta: 3.5 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -571.4 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-09-14 16:36:47,238 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 16:36:47,239 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3454.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 996.3 MB in the end (delta: 406.9 MB). Peak memory consumption was 406.9 MB. Max. memory is 7.1 GB. [2018-09-14 16:36:47,240 INFO L168 Benchmark]: Boogie Procedure Inliner took 376.75 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 220.7 MB). Free memory was 996.3 MB in the beginning and 1.6 GB in the end (delta: -644.7 MB). Peak memory consumption was 75.2 MB. Max. memory is 7.1 GB. [2018-09-14 16:36:47,242 INFO L168 Benchmark]: Boogie Preprocessor took 1118.26 ms. Allocated memory was 1.8 GB in the beginning and 2.3 GB in the end (delta: 558.9 MB). Free memory was 1.6 GB in the beginning and 2.2 GB in the end (delta: -525.9 MB). Peak memory consumption was 108.3 MB. Max. memory is 7.1 GB. [2018-09-14 16:36:47,243 INFO L168 Benchmark]: RCFGBuilder took 12358.05 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 376.4 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -101.1 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-09-14 16:36:47,248 INFO L168 Benchmark]: TraceAbstraction took 196654.61 ms. Allocated memory was 2.7 GB in the beginning and 5.1 GB in the end (delta: 2.4 GB). Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 293.4 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-09-14 16:36:47,260 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3454.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 996.3 MB in the end (delta: 406.9 MB). Peak memory consumption was 406.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 376.75 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 220.7 MB). Free memory was 996.3 MB in the beginning and 1.6 GB in the end (delta: -644.7 MB). Peak memory consumption was 75.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1118.26 ms. Allocated memory was 1.8 GB in the beginning and 2.3 GB in the end (delta: 558.9 MB). Free memory was 1.6 GB in the beginning and 2.2 GB in the end (delta: -525.9 MB). Peak memory consumption was 108.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12358.05 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 376.4 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -101.1 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * TraceAbstraction took 196654.61 ms. Allocated memory was 2.7 GB in the beginning and 5.1 GB in the end (delta: 2.4 GB). Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 293.4 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 9438]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 9438). Cancelled while BasicCegarLoop was constructing difference of abstraction (135133states) and FLOYD_HOARE automaton (currently 56 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (549902 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 1316 locations, 1 error locations. TIMEOUT Result, 196.5s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 153.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7616 SDtfs, 47427 SDslu, 7906 SDs, 0 SdLazy, 86745 SolverSat, 21221 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 102.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14870 GetRequests, 14698 SyntacticMatches, 35 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1754 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135133occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 965 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.3s SsaConstructionTime, 5.0s SatisfiabilityAnalysisTime, 19.7s InterpolantComputationTime, 15588 NumberOfCodeBlocks, 15588 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 22896 ConstructedInterpolants, 0 QuantifiedInterpolants, 41240130 SizeOfPredicates, 18 NumberOfNonLiveVariables, 17583 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 22 InterpolantComputations, 7 PerfectInterpolantSequences, 1515/1655 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem06_label46_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_16-36-47-278.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem06_label46_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_16-36-47-278.csv Completed graceful shutdown