java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:28:29,035 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:28:29,038 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:28:29,056 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:28:29,057 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:28:29,058 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:28:29,060 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:28:29,062 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:28:29,065 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:28:29,065 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:28:29,066 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:28:29,074 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:28:29,075 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:28:29,076 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:28:29,079 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:28:29,080 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:28:29,081 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:28:29,083 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:28:29,085 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:28:29,086 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:28:29,087 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:28:29,088 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:28:29,090 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 11:28:29,090 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 11:28:29,090 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 11:28:29,091 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 11:28:29,092 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 11:28:29,093 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 11:28:29,094 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 11:28:29,095 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 11:28:29,095 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 11:28:29,096 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 11:28:29,096 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:28:29,096 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:28:29,097 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:28:29,098 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:28:29,098 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 11:28:29,119 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:28:29,119 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:28:29,120 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:28:29,123 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:28:29,124 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:28:29,124 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:28:29,124 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:28:29,124 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:28:29,124 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:28:29,125 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:28:29,125 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:28:29,125 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:28:29,126 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:28:29,126 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:28:29,126 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:28:29,127 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:28:29,127 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:28:29,127 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:28:29,127 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:28:29,127 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:28:29,129 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:28:29,129 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:28:29,129 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:28:29,129 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:28:29,130 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:28:29,130 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:28:29,130 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:28:29,130 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:28:29,131 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:28:29,131 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:28:29,131 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:28:29,131 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:28:29,131 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:28:29,132 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:28:29,181 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:28:29,193 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:28:29,197 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:28:29,199 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:28:29,199 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:28:29,200 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label05_true-unreach-call.c [2018-09-18 11:28:29,546 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56d521c7c/94108a8821e54f9db4f5e1bac9d15e92/FLAGd6f85e94a [2018-09-18 11:28:29,988 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:28:29,989 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label05_true-unreach-call.c [2018-09-18 11:28:30,031 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56d521c7c/94108a8821e54f9db4f5e1bac9d15e92/FLAGd6f85e94a [2018-09-18 11:28:30,053 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56d521c7c/94108a8821e54f9db4f5e1bac9d15e92 [2018-09-18 11:28:30,067 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:28:30,072 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:28:30,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:28:30,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:28:30,083 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:28:30,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:28:30" (1/1) ... [2018-09-18 11:28:30,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43a96985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:28:30, skipping insertion in model container [2018-09-18 11:28:30,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:28:30" (1/1) ... [2018-09-18 11:28:30,103 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:28:31,504 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:28:31,523 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:28:32,096 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:28:32,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:28:32 WrapperNode [2018-09-18 11:28:32,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:28:32,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:28:32,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:28:32,336 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:28:32,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:28:32" (1/1) ... [2018-09-18 11:28:32,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:28:32" (1/1) ... [2018-09-18 11:28:32,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:28:32,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:28:32,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:28:32,585 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:28:33,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:28:32" (1/1) ... [2018-09-18 11:28:33,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:28:32" (1/1) ... [2018-09-18 11:28:33,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:28:32" (1/1) ... [2018-09-18 11:28:33,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:28:32" (1/1) ... [2018-09-18 11:28:33,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:28:32" (1/1) ... [2018-09-18 11:28:33,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:28:32" (1/1) ... [2018-09-18 11:28:33,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:28:32" (1/1) ... [2018-09-18 11:28:33,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:28:33,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:28:33,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:28:33,480 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:28:33,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:28:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:28:33,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:28:33,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:28:33,559 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 11:28:33,560 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 11:28:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 11:28:33,560 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 11:28:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 11:28:33,560 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 11:28:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:28:33,561 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:28:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:28:33,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:28:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:28:33,562 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:28:46,266 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:28:46,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:28:46 BoogieIcfgContainer [2018-09-18 11:28:46,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:28:46,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:28:46,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:28:46,272 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:28:46,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:28:30" (1/3) ... [2018-09-18 11:28:46,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba86a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:28:46, skipping insertion in model container [2018-09-18 11:28:46,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:28:32" (2/3) ... [2018-09-18 11:28:46,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba86a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:28:46, skipping insertion in model container [2018-09-18 11:28:46,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:28:46" (3/3) ... [2018-09-18 11:28:46,276 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label05_true-unreach-call.c [2018-09-18 11:28:46,286 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:28:46,296 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:28:46,359 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:28:46,360 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:28:46,360 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:28:46,360 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:28:46,361 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:28:46,361 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:28:46,361 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:28:46,361 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:28:46,361 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:28:46,412 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-18 11:28:46,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-09-18 11:28:46,422 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:28:46,423 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] [2018-09-18 11:28:46,424 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:28:46,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1226611092, now seen corresponding path program 1 times [2018-09-18 11:28:46,431 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:28:46,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:28:46,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:28:46,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:28:46,483 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:28:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:28:46,953 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:28:47,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:28:47,081 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:28:47,082 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:28:47,082 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:28:47,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:28:47,107 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:28:47,107 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:28:47,110 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-18 11:28:55,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:28:55,031 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-18 11:28:55,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:28:55,034 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2018-09-18 11:28:55,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:28:55,069 INFO L225 Difference]: With dead ends: 2446 [2018-09-18 11:28:55,069 INFO L226 Difference]: Without dead ends: 1604 [2018-09-18 11:28:55,082 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:28:55,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-18 11:28:55,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-18 11:28:55,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-18 11:28:55,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-09-18 11:28:55,262 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 66 [2018-09-18 11:28:55,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:28:55,263 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-09-18 11:28:55,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:28:55,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-09-18 11:28:55,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-18 11:28:55,276 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:28:55,277 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:28:55,277 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:28:55,277 INFO L82 PathProgramCache]: Analyzing trace with hash -2035873030, now seen corresponding path program 1 times [2018-09-18 11:28:55,278 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:28:55,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:28:55,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:28:55,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:28:55,280 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:28:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:28:55,604 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:28:55,604 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:28:55,604 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:28:55,604 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:28:55,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:28:55,607 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:28:55,607 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:28:55,607 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 5 states. [2018-09-18 11:29:06,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:29:06,459 INFO L93 Difference]: Finished difference Result 4038 states and 7427 transitions. [2018-09-18 11:29:06,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:29:06,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2018-09-18 11:29:06,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:29:06,475 INFO L225 Difference]: With dead ends: 4038 [2018-09-18 11:29:06,476 INFO L226 Difference]: Without dead ends: 2440 [2018-09-18 11:29:06,481 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:29:06,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2018-09-18 11:29:06,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2413. [2018-09-18 11:29:06,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2413 states. [2018-09-18 11:29:06,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 4141 transitions. [2018-09-18 11:29:06,550 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 4141 transitions. Word has length 140 [2018-09-18 11:29:06,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:29:06,550 INFO L480 AbstractCegarLoop]: Abstraction has 2413 states and 4141 transitions. [2018-09-18 11:29:06,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:29:06,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 4141 transitions. [2018-09-18 11:29:06,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-09-18 11:29:06,555 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:29:06,556 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:29:06,556 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:29:06,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1332120426, now seen corresponding path program 1 times [2018-09-18 11:29:06,556 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:29:06,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:29:06,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:29:06,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:29:06,558 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:29:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:29:06,791 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-18 11:29:06,792 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:29:06,792 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:29:06,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:29:06,804 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:29:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:29:06,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:29:07,016 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-18 11:29:07,016 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:29:07,783 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-18 11:29:07,816 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:29:07,816 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2018-09-18 11:29:07,816 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:29:07,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:29:07,817 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:29:07,817 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-18 11:29:07,818 INFO L87 Difference]: Start difference. First operand 2413 states and 4141 transitions. Second operand 4 states. [2018-09-18 11:29:15,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:29:15,521 INFO L93 Difference]: Finished difference Result 7218 states and 12570 transitions. [2018-09-18 11:29:15,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:29:15,532 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2018-09-18 11:29:15,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:29:15,567 INFO L225 Difference]: With dead ends: 7218 [2018-09-18 11:29:15,567 INFO L226 Difference]: Without dead ends: 4811 [2018-09-18 11:29:15,577 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 283 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-18 11:29:15,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4811 states. [2018-09-18 11:29:15,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4811 to 4811. [2018-09-18 11:29:15,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4811 states. [2018-09-18 11:29:15,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4811 states to 4811 states and 7668 transitions. [2018-09-18 11:29:15,738 INFO L78 Accepts]: Start accepts. Automaton has 4811 states and 7668 transitions. Word has length 142 [2018-09-18 11:29:15,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:29:15,740 INFO L480 AbstractCegarLoop]: Abstraction has 4811 states and 7668 transitions. [2018-09-18 11:29:15,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:29:15,740 INFO L276 IsEmpty]: Start isEmpty. Operand 4811 states and 7668 transitions. [2018-09-18 11:29:15,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-09-18 11:29:15,750 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:29:15,751 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-18 11:29:15,751 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:29:15,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1830142179, now seen corresponding path program 1 times [2018-09-18 11:29:15,752 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:29:15,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:29:15,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:29:15,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:29:15,753 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:29:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:29:16,063 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:29:16,329 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 118 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:29:16,329 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:29:16,329 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:29:16,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:29:16,349 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:29:16,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:29:16,446 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:29:16,686 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-09-18 11:29:16,687 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:29:17,065 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 118 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:29:17,086 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:29:17,087 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-09-18 11:29:17,087 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:29:17,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:29:17,088 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:29:17,088 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-18 11:29:17,089 INFO L87 Difference]: Start difference. First operand 4811 states and 7668 transitions. Second operand 5 states. [2018-09-18 11:29:31,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:29:31,094 INFO L93 Difference]: Finished difference Result 17510 states and 28741 transitions. [2018-09-18 11:29:31,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:29:31,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2018-09-18 11:29:31,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:29:31,159 INFO L225 Difference]: With dead ends: 17510 [2018-09-18 11:29:31,159 INFO L226 Difference]: Without dead ends: 12705 [2018-09-18 11:29:31,188 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 424 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:29:31,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12705 states. [2018-09-18 11:29:31,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12705 to 12682. [2018-09-18 11:29:31,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12682 states. [2018-09-18 11:29:31,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12682 states to 12682 states and 18474 transitions. [2018-09-18 11:29:31,495 INFO L78 Accepts]: Start accepts. Automaton has 12682 states and 18474 transitions. Word has length 215 [2018-09-18 11:29:31,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:29:31,496 INFO L480 AbstractCegarLoop]: Abstraction has 12682 states and 18474 transitions. [2018-09-18 11:29:31,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:29:31,496 INFO L276 IsEmpty]: Start isEmpty. Operand 12682 states and 18474 transitions. [2018-09-18 11:29:31,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-09-18 11:29:31,505 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:29:31,505 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:29:31,506 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:29:31,506 INFO L82 PathProgramCache]: Analyzing trace with hash 568861473, now seen corresponding path program 1 times [2018-09-18 11:29:31,506 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:29:31,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:29:31,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:29:31,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:29:31,508 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:29:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:29:32,134 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 121 proven. 67 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-18 11:29:32,134 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:29:32,134 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 [2018-09-18 11:29:32,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:29:32,145 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:29:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:29:32,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:29:32,339 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:29:32,339 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:29:32,639 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:29:32,677 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:29:32,677 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 [2018-09-18 11:29:32,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:29:32,712 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:29:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:29:32,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:29:33,330 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:29:33,331 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:29:33,556 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:29:33,558 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:29:33,558 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-18 11:29:33,558 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:29:33,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:29:33,560 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:29:33,560 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-09-18 11:29:33,561 INFO L87 Difference]: Start difference. First operand 12682 states and 18474 transitions. Second operand 9 states. [2018-09-18 11:29:58,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:29:58,705 INFO L93 Difference]: Finished difference Result 56464 states and 97081 transitions. [2018-09-18 11:29:58,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-18 11:29:58,718 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 237 [2018-09-18 11:29:58,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:29:58,984 INFO L225 Difference]: With dead ends: 56464 [2018-09-18 11:29:58,984 INFO L226 Difference]: Without dead ends: 43788 [2018-09-18 11:29:59,109 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 999 GetRequests, 958 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=359, Invalid=1281, Unknown=0, NotChecked=0, Total=1640 [2018-09-18 11:29:59,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43788 states. [2018-09-18 11:30:00,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43788 to 43025. [2018-09-18 11:30:00,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43025 states. [2018-09-18 11:30:00,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43025 states to 43025 states and 59002 transitions. [2018-09-18 11:30:00,398 INFO L78 Accepts]: Start accepts. Automaton has 43025 states and 59002 transitions. Word has length 237 [2018-09-18 11:30:00,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:30:00,404 INFO L480 AbstractCegarLoop]: Abstraction has 43025 states and 59002 transitions. [2018-09-18 11:30:00,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:30:00,405 INFO L276 IsEmpty]: Start isEmpty. Operand 43025 states and 59002 transitions. [2018-09-18 11:30:00,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-09-18 11:30:00,423 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:30:00,425 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-18 11:30:00,425 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:30:00,425 INFO L82 PathProgramCache]: Analyzing trace with hash -782989507, now seen corresponding path program 1 times [2018-09-18 11:30:00,426 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:30:00,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:00,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:00,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:00,427 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:30:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-18 11:30:00,743 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:30:00,743 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:30:00,743 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:30:00,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:30:00,744 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:30:00,744 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:30:00,744 INFO L87 Difference]: Start difference. First operand 43025 states and 59002 transitions. Second operand 4 states. [2018-09-18 11:30:12,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:30:12,453 INFO L93 Difference]: Finished difference Result 164663 states and 241675 transitions. [2018-09-18 11:30:12,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:30:12,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 289 [2018-09-18 11:30:12,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:30:13,010 INFO L225 Difference]: With dead ends: 164663 [2018-09-18 11:30:13,011 INFO L226 Difference]: Without dead ends: 121644 [2018-09-18 11:30:13,161 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:30:13,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121644 states. [2018-09-18 11:30:15,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121644 to 121627. [2018-09-18 11:30:15,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121627 states. [2018-09-18 11:30:15,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121627 states to 121627 states and 171841 transitions. [2018-09-18 11:30:15,951 INFO L78 Accepts]: Start accepts. Automaton has 121627 states and 171841 transitions. Word has length 289 [2018-09-18 11:30:15,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:30:15,952 INFO L480 AbstractCegarLoop]: Abstraction has 121627 states and 171841 transitions. [2018-09-18 11:30:15,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:30:15,952 INFO L276 IsEmpty]: Start isEmpty. Operand 121627 states and 171841 transitions. [2018-09-18 11:30:15,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-09-18 11:30:15,983 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:30:15,984 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:30:15,984 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:30:15,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1597993304, now seen corresponding path program 1 times [2018-09-18 11:30:15,985 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:30:15,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:15,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:15,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:15,986 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:30:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:16,358 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 119 proven. 15 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-18 11:30:16,358 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:30:16,358 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:30:16,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:16,368 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:30:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:16,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:30:16,571 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:30:16,571 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:30:16,714 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:30:16,735 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:30:16,735 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:30:16,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:16,751 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:30:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:16,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:30:17,785 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-18 11:30:17,785 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:30:18,061 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-18 11:30:18,062 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-18 11:30:18,063 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-09-18 11:30:18,063 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:30:18,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:30:18,064 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:30:18,064 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:30:18,065 INFO L87 Difference]: Start difference. First operand 121627 states and 171841 transitions. Second operand 5 states. [2018-09-18 11:30:25,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:30:25,751 INFO L93 Difference]: Finished difference Result 271364 states and 388331 transitions. [2018-09-18 11:30:25,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:30:25,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2018-09-18 11:30:25,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:30:27,185 INFO L225 Difference]: With dead ends: 271364 [2018-09-18 11:30:27,185 INFO L226 Difference]: Without dead ends: 149743 [2018-09-18 11:30:27,352 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1264 GetRequests, 1244 SyntacticMatches, 9 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-18 11:30:27,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149743 states. [2018-09-18 11:30:29,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149743 to 149740. [2018-09-18 11:30:29,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149740 states. [2018-09-18 11:30:29,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149740 states to 149740 states and 204322 transitions. [2018-09-18 11:30:29,769 INFO L78 Accepts]: Start accepts. Automaton has 149740 states and 204322 transitions. Word has length 314 [2018-09-18 11:30:29,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:30:29,770 INFO L480 AbstractCegarLoop]: Abstraction has 149740 states and 204322 transitions. [2018-09-18 11:30:29,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:30:29,770 INFO L276 IsEmpty]: Start isEmpty. Operand 149740 states and 204322 transitions. [2018-09-18 11:30:29,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-09-18 11:30:29,803 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:30:29,803 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:30:29,803 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:30:29,804 INFO L82 PathProgramCache]: Analyzing trace with hash -874736827, now seen corresponding path program 1 times [2018-09-18 11:30:29,804 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:30:29,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:29,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:29,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:29,805 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:30:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:30,297 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 6 [2018-09-18 11:30:30,752 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-09-18 11:30:31,154 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-18 11:30:31,370 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 22 [2018-09-18 11:30:32,888 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 158 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:30:32,888 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:30:32,888 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:30:32,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:32,897 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:30:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:32,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:30:33,331 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-09-18 11:30:33,331 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:30:33,548 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2018-09-18 11:30:34,274 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 118 proven. 97 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:30:34,295 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:30:34,296 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 5] total 16 [2018-09-18 11:30:34,296 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:30:34,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:30:34,296 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:30:34,296 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-09-18 11:30:34,297 INFO L87 Difference]: Start difference. First operand 149740 states and 204322 transitions. Second operand 5 states. [2018-09-18 11:30:46,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:30:46,856 INFO L93 Difference]: Finished difference Result 334725 states and 458173 transitions. [2018-09-18 11:30:46,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-18 11:30:46,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 317 [2018-09-18 11:30:46,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:30:47,463 INFO L225 Difference]: With dead ends: 334725 [2018-09-18 11:30:47,463 INFO L226 Difference]: Without dead ends: 178979 [2018-09-18 11:30:47,712 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 631 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2018-09-18 11:30:47,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178979 states. [2018-09-18 11:30:51,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178979 to 177942. [2018-09-18 11:30:51,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177942 states. [2018-09-18 11:30:51,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177942 states to 177942 states and 239176 transitions. [2018-09-18 11:30:51,576 INFO L78 Accepts]: Start accepts. Automaton has 177942 states and 239176 transitions. Word has length 317 [2018-09-18 11:30:51,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:30:51,576 INFO L480 AbstractCegarLoop]: Abstraction has 177942 states and 239176 transitions. [2018-09-18 11:30:51,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:30:51,577 INFO L276 IsEmpty]: Start isEmpty. Operand 177942 states and 239176 transitions. [2018-09-18 11:30:51,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-09-18 11:30:51,596 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:30:51,596 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:30:51,596 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:30:51,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1385108143, now seen corresponding path program 1 times [2018-09-18 11:30:51,597 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:30:51,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:51,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:51,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:51,598 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:30:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:51,895 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:30:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 119 proven. 43 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-09-18 11:30:51,999 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:30:51,999 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:30:52,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:52,008 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:30:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:52,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:30:52,199 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 229 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:30:52,200 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:30:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 229 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:30:52,925 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:30:52,925 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:30:52,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:52,943 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:30:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:53,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:30:53,266 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-09-18 11:30:53,266 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:30:53,476 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-09-18 11:30:53,480 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-18 11:30:53,480 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 11 [2018-09-18 11:30:53,480 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:30:53,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:30:53,481 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:30:53,482 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:30:53,482 INFO L87 Difference]: Start difference. First operand 177942 states and 239176 transitions. Second operand 5 states. [2018-09-18 11:31:05,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:31:05,547 INFO L93 Difference]: Finished difference Result 382940 states and 519896 transitions. [2018-09-18 11:31:05,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:31:05,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 329 [2018-09-18 11:31:05,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:31:06,150 INFO L225 Difference]: With dead ends: 382940 [2018-09-18 11:31:06,151 INFO L226 Difference]: Without dead ends: 205772 [2018-09-18 11:31:06,421 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1324 GetRequests, 1304 SyntacticMatches, 10 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:31:06,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205772 states. [2018-09-18 11:31:09,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205772 to 199716. [2018-09-18 11:31:09,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199716 states. [2018-09-18 11:31:09,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199716 states to 199716 states and 244782 transitions. [2018-09-18 11:31:09,440 INFO L78 Accepts]: Start accepts. Automaton has 199716 states and 244782 transitions. Word has length 329 [2018-09-18 11:31:09,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:31:09,440 INFO L480 AbstractCegarLoop]: Abstraction has 199716 states and 244782 transitions. [2018-09-18 11:31:09,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:31:09,440 INFO L276 IsEmpty]: Start isEmpty. Operand 199716 states and 244782 transitions. [2018-09-18 11:31:09,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-09-18 11:31:09,460 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:31:09,460 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:31:09,461 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:31:09,461 INFO L82 PathProgramCache]: Analyzing trace with hash 2007736067, now seen corresponding path program 1 times [2018-09-18 11:31:09,461 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:31:09,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:09,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:09,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:09,462 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:31:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:09,940 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-18 11:31:10,138 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-18 11:31:10,372 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-18 11:31:10,748 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-09-18 11:31:11,395 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 256 proven. 170 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:31:11,395 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:31:11,396 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:31:11,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:11,404 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:31:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:11,523 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:31:12,792 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 332 proven. 39 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-09-18 11:31:12,792 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:31:13,593 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 187 proven. 239 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:31:13,614 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:31:13,614 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:31:13,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:13,630 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:31:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:13,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:31:14,122 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 332 proven. 39 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-09-18 11:31:14,122 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:31:14,669 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 187 proven. 239 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:31:14,671 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:31:14,672 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9, 9, 9] total 21 [2018-09-18 11:31:14,672 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:31:14,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-18 11:31:14,673 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-18 11:31:14,673 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2018-09-18 11:31:14,673 INFO L87 Difference]: Start difference. First operand 199716 states and 244782 transitions. Second operand 16 states. [2018-09-18 11:31:23,057 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2018-09-18 11:32:00,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:32:00,407 INFO L93 Difference]: Finished difference Result 472620 states and 580405 transitions. [2018-09-18 11:32:00,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-18 11:32:00,410 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 393 [2018-09-18 11:32:00,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:32:01,710 INFO L225 Difference]: With dead ends: 472620 [2018-09-18 11:32:01,711 INFO L226 Difference]: Without dead ends: 271769 [2018-09-18 11:32:01,930 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1647 GetRequests, 1588 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=684, Invalid=2072, Unknown=0, NotChecked=0, Total=2756 [2018-09-18 11:32:02,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271769 states. [2018-09-18 11:32:05,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271769 to 270887. [2018-09-18 11:32:05,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270887 states. [2018-09-18 11:32:05,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270887 states to 270887 states and 322273 transitions. [2018-09-18 11:32:05,876 INFO L78 Accepts]: Start accepts. Automaton has 270887 states and 322273 transitions. Word has length 393 [2018-09-18 11:32:05,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:32:05,876 INFO L480 AbstractCegarLoop]: Abstraction has 270887 states and 322273 transitions. [2018-09-18 11:32:05,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-18 11:32:05,876 INFO L276 IsEmpty]: Start isEmpty. Operand 270887 states and 322273 transitions. [2018-09-18 11:32:05,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-09-18 11:32:05,899 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:32:05,900 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:32:05,900 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:32:05,900 INFO L82 PathProgramCache]: Analyzing trace with hash 848006038, now seen corresponding path program 1 times [2018-09-18 11:32:05,901 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:32:05,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:05,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:05,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:05,902 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:32:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:06,369 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 7 [2018-09-18 11:32:06,573 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 7 [2018-09-18 11:32:06,868 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2018-09-18 11:32:07,293 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-18 11:32:07,758 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 322 proven. 62 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-09-18 11:32:07,758 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:32:07,758 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:32:07,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:07,767 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:32:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:07,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:32:10,061 WARN L178 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 125 DAG size of output: 41 [2018-09-18 11:32:11,251 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 322 proven. 62 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-09-18 11:32:11,251 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:32:11,502 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2018-09-18 11:32:11,814 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 322 proven. 62 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-09-18 11:32:11,836 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:32:11,836 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:32:11,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:11,853 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:32:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:12,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:32:13,087 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 23 Received shutdown request... [2018-09-18 11:32:15,498 WARN L186 SmtUtils]: Removed 2 from assertion stack [2018-09-18 11:32:15,499 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-18 11:32:15,700 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:32:15,700 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 11:32:15,704 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 11:32:15,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 11:32:15 BoogieIcfgContainer [2018-09-18 11:32:15,705 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 11:32:15,705 INFO L168 Benchmark]: Toolchain (without parser) took 225638.26 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -742.0 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-09-18 11:32:15,707 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 11:32:15,707 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2261.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-18 11:32:15,708 INFO L168 Benchmark]: Boogie Procedure Inliner took 248.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-18 11:32:15,709 INFO L168 Benchmark]: Boogie Preprocessor took 895.04 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 919.1 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. [2018-09-18 11:32:15,709 INFO L168 Benchmark]: RCFGBuilder took 12787.68 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 653.0 MB). Peak memory consumption was 653.0 MB. Max. memory is 7.1 GB. [2018-09-18 11:32:15,710 INFO L168 Benchmark]: TraceAbstraction took 209436.39 ms. Allocated memory was 2.4 GB in the beginning and 4.8 GB in the end (delta: 2.4 GB). Free memory was 1.6 GB in the beginning and 2.1 GB in the end (delta: -501.7 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-09-18 11:32:15,715 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2261.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 248.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 895.04 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 919.1 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12787.68 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 653.0 MB). Peak memory consumption was 653.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209436.39 ms. Allocated memory was 2.4 GB in the beginning and 4.8 GB in the end (delta: 2.4 GB). Free memory was 1.6 GB in the beginning and 2.1 GB in the end (delta: -501.7 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 189]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 189). Cancelled while BasicCegarLoop was analyzing trace of length 441 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 545. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 209.3s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 161.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1699 SDtfs, 39340 SDslu, 2514 SDs, 0 SdLazy, 74612 SolverSat, 16195 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 119.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6631 GetRequests, 6439 SyntacticMatches, 40 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1384 ImplicationChecksByTransitivity, 9.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=270887occurred in iteration=10, 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: 18.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 8808 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 15.0s InterpolantComputationTime, 5662 NumberOfCodeBlocks, 5662 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 8850 ConstructedInterpolants, 0 QuantifiedInterpolants, 18618502 SizeOfPredicates, 26 NumberOfNonLiveVariables, 5580 ConjunctsInSsa, 136 ConjunctsInUnsatCore, 32 InterpolantComputations, 8 PerfectInterpolantSequences, 5744/7018 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/Problem12_label05_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-32-15-728.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label05_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_11-32-15-728.csv Completed graceful shutdown