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/Problem13_label15_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:29:42,052 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:29:42,054 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:29:42,071 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:29:42,071 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:29:42,073 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:29:42,074 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:29:42,079 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:29:42,081 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:29:42,082 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:29:42,091 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:29:42,091 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:29:42,095 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:29:42,096 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:29:42,100 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:29:42,102 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:29:42,104 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:29:42,106 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:29:42,108 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:29:42,110 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:29:42,114 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:29:42,115 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:29:42,122 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:29:42,123 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:29:42,123 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:29:42,125 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:29:42,126 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:29:42,127 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:29:42,128 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:29:42,129 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:29:42,129 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:29:42,133 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:29:42,134 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:29:42,134 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:29:42,135 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:29:42,135 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:29:42,136 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 17:29:42,168 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:29:42,168 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:29:42,169 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:29:42,169 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:29:42,169 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:29:42,170 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:29:42,170 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:29:42,170 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:29:42,170 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:29:42,170 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:29:42,171 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:29:42,172 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:29:42,173 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:29:42,173 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:29:42,173 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:29:42,173 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:29:42,173 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:29:42,174 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:29:42,174 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:29:42,174 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:29:42,174 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:29:42,176 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:29:42,176 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:29:42,176 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:29:42,177 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:29:42,177 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:29:42,177 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:29:42,177 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:29:42,178 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:29:42,178 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:29:42,178 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:29:42,178 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:29:42,179 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:29:42,243 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:29:42,260 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:29:42,265 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:29:42,267 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:29:42,267 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:29:42,268 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label15_true-unreach-call.c [2018-09-14 17:29:42,621 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3463917/f456a52285b84865829c7e6a0e007ab5/FLAG1ac1915db [2018-09-14 17:29:43,158 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:29:43,159 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label15_true-unreach-call.c [2018-09-14 17:29:43,206 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3463917/f456a52285b84865829c7e6a0e007ab5/FLAG1ac1915db [2018-09-14 17:29:43,229 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e3463917/f456a52285b84865829c7e6a0e007ab5 [2018-09-14 17:29:43,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:29:43,250 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:29:43,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:29:43,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:29:43,259 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:29:43,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:29:43" (1/1) ... [2018-09-14 17:29:43,264 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 14.09 05:29:43, skipping insertion in model container [2018-09-14 17:29:43,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:29:43" (1/1) ... [2018-09-14 17:29:43,278 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:29:44,773 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:29:44,797 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:29:45,604 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:29:46,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:46 WrapperNode [2018-09-14 17:29:46,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:29:46,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:29:46,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:29:46,013 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:29:46,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:46" (1/1) ... [2018-09-14 17:29:46,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:46" (1/1) ... [2018-09-14 17:29:46,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:29:46,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:29:46,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:29:46,324 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:29:47,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:46" (1/1) ... [2018-09-14 17:29:47,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:46" (1/1) ... [2018-09-14 17:29:47,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:46" (1/1) ... [2018-09-14 17:29:47,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:46" (1/1) ... [2018-09-14 17:29:47,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:46" (1/1) ... [2018-09-14 17:29:47,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:46" (1/1) ... [2018-09-14 17:29:47,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:46" (1/1) ... [2018-09-14 17:29:47,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:29:47,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:29:47,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:29:47,528 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:29:47,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:29:47,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:29:47,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:29:47,598 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 17:29:47,599 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 17:29:47,599 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 17:29:47,599 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 17:29:47,599 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:29:47,599 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:29:47,599 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:29:47,600 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:29:47,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:29:47,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:29:47,600 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:29:47,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:29:59,523 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:29:59,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:29:59 BoogieIcfgContainer [2018-09-14 17:29:59,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:29:59,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:29:59,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:29:59,528 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:29:59,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:29:43" (1/3) ... [2018-09-14 17:29:59,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484141ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:29:59, skipping insertion in model container [2018-09-14 17:29:59,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:29:46" (2/3) ... [2018-09-14 17:29:59,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484141ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:29:59, skipping insertion in model container [2018-09-14 17:29:59,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:29:59" (3/3) ... [2018-09-14 17:29:59,535 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label15_true-unreach-call.c [2018-09-14 17:29:59,545 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:29:59,556 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:29:59,637 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:29:59,638 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:29:59,638 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:29:59,638 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:29:59,639 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:29:59,639 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:29:59,639 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:29:59,639 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:29:59,639 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:29:59,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-14 17:29:59,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-09-14 17:29:59,716 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:29:59,717 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] [2018-09-14 17:29:59,718 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:29:59,722 INFO L82 PathProgramCache]: Analyzing trace with hash 801605187, now seen corresponding path program 1 times [2018-09-14 17:29:59,725 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:29:59,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:59,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:29:59,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:29:59,788 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:29:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:30:00,179 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:30:00,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:30:00,292 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:30:00,292 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:30:00,293 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:30:00,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:30:00,316 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:30:00,317 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:30:00,320 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-09-14 17:30:08,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:30:08,800 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-09-14 17:30:08,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:30:08,802 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2018-09-14 17:30:08,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:30:08,838 INFO L225 Difference]: With dead ends: 3097 [2018-09-14 17:30:08,839 INFO L226 Difference]: Without dead ends: 1975 [2018-09-14 17:30:08,852 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 [2018-09-14 17:30:08,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-09-14 17:30:09,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-09-14 17:30:09,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-09-14 17:30:09,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-09-14 17:30:09,020 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 43 [2018-09-14 17:30:09,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:30:09,021 INFO L480 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-09-14 17:30:09,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:30:09,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-09-14 17:30:09,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-09-14 17:30:09,029 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:30:09,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:30:09,030 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:30:09,031 INFO L82 PathProgramCache]: Analyzing trace with hash 2094905010, now seen corresponding path program 1 times [2018-09-14 17:30:09,031 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:30:09,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:09,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:30:09,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:09,033 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:30:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:30:09,611 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:30:09,612 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:30:09,612 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:30:09,612 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:30:09,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:30:09,615 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:30:09,616 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:30:09,616 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-09-14 17:30:28,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:30:28,959 INFO L93 Difference]: Finished difference Result 5736 states and 9691 transitions. [2018-09-14 17:30:28,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:30:28,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2018-09-14 17:30:28,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:30:28,992 INFO L225 Difference]: With dead ends: 5736 [2018-09-14 17:30:28,992 INFO L226 Difference]: Without dead ends: 3768 [2018-09-14 17:30:29,001 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:30:29,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2018-09-14 17:30:29,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 3686. [2018-09-14 17:30:29,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3686 states. [2018-09-14 17:30:29,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 5660 transitions. [2018-09-14 17:30:29,245 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 5660 transitions. Word has length 119 [2018-09-14 17:30:29,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:30:29,245 INFO L480 AbstractCegarLoop]: Abstraction has 3686 states and 5660 transitions. [2018-09-14 17:30:29,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:30:29,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 5660 transitions. [2018-09-14 17:30:29,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-09-14 17:30:29,250 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:30:29,250 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:30:29,251 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:30:29,251 INFO L82 PathProgramCache]: Analyzing trace with hash 695171086, now seen corresponding path program 1 times [2018-09-14 17:30:29,251 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:30:29,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:29,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:30:29,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:29,253 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:30:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:30:29,496 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:30:29,497 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:30:29,497 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:30:29,497 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:30:29,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:30:29,498 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:30:29,498 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:30:29,499 INFO L87 Difference]: Start difference. First operand 3686 states and 5660 transitions. Second operand 5 states. [2018-09-14 17:30:54,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:30:54,852 INFO L93 Difference]: Finished difference Result 13666 states and 21761 transitions. [2018-09-14 17:30:54,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:30:54,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2018-09-14 17:30:54,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:30:54,917 INFO L225 Difference]: With dead ends: 13666 [2018-09-14 17:30:54,917 INFO L226 Difference]: Without dead ends: 9986 [2018-09-14 17:30:54,943 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:30:54,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9986 states. [2018-09-14 17:30:55,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9986 to 9796. [2018-09-14 17:30:55,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9796 states. [2018-09-14 17:30:55,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9796 states to 9796 states and 14501 transitions. [2018-09-14 17:30:55,211 INFO L78 Accepts]: Start accepts. Automaton has 9796 states and 14501 transitions. Word has length 133 [2018-09-14 17:30:55,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:30:55,212 INFO L480 AbstractCegarLoop]: Abstraction has 9796 states and 14501 transitions. [2018-09-14 17:30:55,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:30:55,212 INFO L276 IsEmpty]: Start isEmpty. Operand 9796 states and 14501 transitions. [2018-09-14 17:30:55,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-09-14 17:30:55,218 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:30:55,218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:30:55,218 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:30:55,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1489581070, now seen corresponding path program 1 times [2018-09-14 17:30:55,219 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:30:55,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:55,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:30:55,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:30:55,220 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:30:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:30:55,513 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:30:55,735 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:30:55,736 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:30:55,736 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:30:55,736 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:30:55,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:30:55,737 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:30:55,737 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:30:55,737 INFO L87 Difference]: Start difference. First operand 9796 states and 14501 transitions. Second operand 6 states. [2018-09-14 17:31:08,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:31:08,445 INFO L93 Difference]: Finished difference Result 34193 states and 53806 transitions. [2018-09-14 17:31:08,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:31:08,449 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2018-09-14 17:31:08,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:31:08,589 INFO L225 Difference]: With dead ends: 34193 [2018-09-14 17:31:08,589 INFO L226 Difference]: Without dead ends: 24403 [2018-09-14 17:31:08,665 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:31:08,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24403 states. [2018-09-14 17:31:09,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24403 to 24170. [2018-09-14 17:31:09,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24170 states. [2018-09-14 17:31:09,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24170 states to 24170 states and 34072 transitions. [2018-09-14 17:31:09,433 INFO L78 Accepts]: Start accepts. Automaton has 24170 states and 34072 transitions. Word has length 151 [2018-09-14 17:31:09,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:31:09,434 INFO L480 AbstractCegarLoop]: Abstraction has 24170 states and 34072 transitions. [2018-09-14 17:31:09,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:31:09,434 INFO L276 IsEmpty]: Start isEmpty. Operand 24170 states and 34072 transitions. [2018-09-14 17:31:09,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-09-14 17:31:09,445 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:31:09,446 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:31:09,446 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:31:09,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1334716798, now seen corresponding path program 1 times [2018-09-14 17:31:09,446 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:31:09,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:09,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:09,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:09,448 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:31:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:09,689 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:31:09,690 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:31:09,690 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:31:09,690 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:31:09,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:31:09,691 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:31:09,691 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:31:09,691 INFO L87 Difference]: Start difference. First operand 24170 states and 34072 transitions. Second operand 4 states. [2018-09-14 17:31:20,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:31:20,295 INFO L93 Difference]: Finished difference Result 66651 states and 99959 transitions. [2018-09-14 17:31:20,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:31:20,296 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2018-09-14 17:31:20,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:31:20,485 INFO L225 Difference]: With dead ends: 66651 [2018-09-14 17:31:20,486 INFO L226 Difference]: Without dead ends: 42487 [2018-09-14 17:31:20,894 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:31:20,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42487 states. [2018-09-14 17:31:21,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42487 to 42434. [2018-09-14 17:31:21,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42434 states. [2018-09-14 17:31:21,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42434 states to 42434 states and 60055 transitions. [2018-09-14 17:31:21,948 INFO L78 Accepts]: Start accepts. Automaton has 42434 states and 60055 transitions. Word has length 159 [2018-09-14 17:31:21,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:31:21,949 INFO L480 AbstractCegarLoop]: Abstraction has 42434 states and 60055 transitions. [2018-09-14 17:31:21,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:31:21,949 INFO L276 IsEmpty]: Start isEmpty. Operand 42434 states and 60055 transitions. [2018-09-14 17:31:21,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-09-14 17:31:21,969 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:31:21,970 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:31:21,970 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:31:21,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1702866948, now seen corresponding path program 1 times [2018-09-14 17:31:21,970 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:31:21,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:21,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:21,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:21,972 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:31:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:22,321 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:31:22,680 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 72 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:31:22,681 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:31:22,681 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:31:22,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:22,697 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:31:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:22,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:31:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-09-14 17:31:23,406 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:31:24,425 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 72 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:31:24,462 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:31:24,462 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-09-14 17:31:24,462 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:31:24,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:31:24,463 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:31:24,464 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:31:24,464 INFO L87 Difference]: Start difference. First operand 42434 states and 60055 transitions. Second operand 5 states. [2018-09-14 17:31:45,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:31:45,605 INFO L93 Difference]: Finished difference Result 131566 states and 197990 transitions. [2018-09-14 17:31:45,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:31:45,605 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 239 [2018-09-14 17:31:45,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:31:46,026 INFO L225 Difference]: With dead ends: 131566 [2018-09-14 17:31:46,027 INFO L226 Difference]: Without dead ends: 89138 [2018-09-14 17:31:46,369 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 473 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:31:46,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89138 states. [2018-09-14 17:31:48,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89138 to 88997. [2018-09-14 17:31:48,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88997 states. [2018-09-14 17:31:48,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88997 states to 88997 states and 124430 transitions. [2018-09-14 17:31:48,928 INFO L78 Accepts]: Start accepts. Automaton has 88997 states and 124430 transitions. Word has length 239 [2018-09-14 17:31:48,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:31:48,929 INFO L480 AbstractCegarLoop]: Abstraction has 88997 states and 124430 transitions. [2018-09-14 17:31:48,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:31:48,929 INFO L276 IsEmpty]: Start isEmpty. Operand 88997 states and 124430 transitions. [2018-09-14 17:31:48,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-09-14 17:31:48,964 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:31:48,964 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-14 17:31:48,965 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:31:48,965 INFO L82 PathProgramCache]: Analyzing trace with hash -2088829904, now seen corresponding path program 1 times [2018-09-14 17:31:48,965 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:31:48,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:48,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:48,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:31:48,966 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:31:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:49,340 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:31:49,580 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 110 proven. 18 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2018-09-14 17:31:49,580 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:31:49,580 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:31:49,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:49,590 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:31:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:49,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:31:50,044 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 263 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-14 17:31:50,044 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:31:50,299 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 17:31:50,793 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 263 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-14 17:31:50,815 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:31:50,815 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:31:50,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:31:50,832 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:31:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:31:51,074 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:31:51,457 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 263 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-14 17:31:51,457 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:31:51,801 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 263 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-14 17:31:51,804 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:31:51,805 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-14 17:31:51,805 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:31:51,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:31:51,807 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:31:51,807 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-09-14 17:31:51,807 INFO L87 Difference]: Start difference. First operand 88997 states and 124430 transitions. Second operand 9 states. [2018-09-14 17:32:07,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:32:07,857 INFO L93 Difference]: Finished difference Result 232617 states and 361398 transitions. [2018-09-14 17:32:07,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-14 17:32:07,857 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 322 [2018-09-14 17:32:07,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:32:08,479 INFO L225 Difference]: With dead ends: 232617 [2018-09-14 17:32:08,479 INFO L226 Difference]: Without dead ends: 143626 [2018-09-14 17:32:08,700 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1311 GetRequests, 1286 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2018-09-14 17:32:08,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143626 states. [2018-09-14 17:32:11,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143626 to 141837. [2018-09-14 17:32:11,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141837 states. [2018-09-14 17:32:11,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141837 states to 141837 states and 193618 transitions. [2018-09-14 17:32:11,571 INFO L78 Accepts]: Start accepts. Automaton has 141837 states and 193618 transitions. Word has length 322 [2018-09-14 17:32:11,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:32:11,572 INFO L480 AbstractCegarLoop]: Abstraction has 141837 states and 193618 transitions. [2018-09-14 17:32:11,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:32:11,572 INFO L276 IsEmpty]: Start isEmpty. Operand 141837 states and 193618 transitions. [2018-09-14 17:32:12,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-09-14 17:32:12,817 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:32:12,817 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:32:12,817 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:32:12,817 INFO L82 PathProgramCache]: Analyzing trace with hash -555689402, now seen corresponding path program 1 times [2018-09-14 17:32:12,818 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:32:12,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:12,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:32:12,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:12,819 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:32:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:32:13,237 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 263 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:32:13,237 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:32:13,237 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:32:13,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:32:13,246 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:32:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:32:13,352 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:32:13,535 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 263 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:32:13,535 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:32:13,854 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 263 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:32:13,874 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:32:13,875 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:32:13,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:32:13,891 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:32:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:32:14,129 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:32:14,419 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 263 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:32:14,420 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:32:15,052 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 263 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 17:32:15,054 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:32:15,054 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 17:32:15,055 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:32:15,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:32:15,056 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:32:15,056 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:32:15,056 INFO L87 Difference]: Start difference. First operand 141837 states and 193618 transitions. Second operand 9 states. [2018-09-14 17:32:37,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:32:37,979 INFO L93 Difference]: Finished difference Result 335906 states and 543806 transitions. [2018-09-14 17:32:37,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-14 17:32:37,980 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 331 [2018-09-14 17:32:37,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:32:39,062 INFO L225 Difference]: With dead ends: 335906 [2018-09-14 17:32:39,062 INFO L226 Difference]: Without dead ends: 194075 [2018-09-14 17:32:40,770 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1346 GetRequests, 1322 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-09-14 17:32:40,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194075 states. [2018-09-14 17:32:44,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194075 to 191739. [2018-09-14 17:32:44,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191739 states. [2018-09-14 17:32:45,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191739 states to 191739 states and 280585 transitions. [2018-09-14 17:32:45,584 INFO L78 Accepts]: Start accepts. Automaton has 191739 states and 280585 transitions. Word has length 331 [2018-09-14 17:32:45,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:32:45,585 INFO L480 AbstractCegarLoop]: Abstraction has 191739 states and 280585 transitions. [2018-09-14 17:32:45,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:32:45,585 INFO L276 IsEmpty]: Start isEmpty. Operand 191739 states and 280585 transitions. [2018-09-14 17:32:45,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-09-14 17:32:45,641 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:32:45,641 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:32:45,641 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:32:45,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1453920552, now seen corresponding path program 1 times [2018-09-14 17:32:45,642 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:32:45,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:45,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:32:45,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:32:45,643 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:32:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:32:45,968 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 205 proven. 95 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-14 17:32:45,969 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:32:45,969 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:32:45,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:32:45,978 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:32:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:32:46,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:32:46,224 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 353 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-09-14 17:32:46,224 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:32:46,384 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 205 proven. 95 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-14 17:32:46,406 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:32:46,406 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:32:52,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:32:52,542 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:32:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:32:52,775 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:32:52,852 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 353 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-09-14 17:32:52,852 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:32:52,991 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 205 proven. 95 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-14 17:32:52,993 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:32:52,994 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 17:32:52,994 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:32:52,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:32:52,994 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:32:52,995 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:32:52,995 INFO L87 Difference]: Start difference. First operand 191739 states and 280585 transitions. Second operand 9 states. [2018-09-14 17:33:21,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:33:21,225 INFO L93 Difference]: Finished difference Result 402961 states and 686531 transitions. [2018-09-14 17:33:21,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-14 17:33:21,226 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 339 [2018-09-14 17:33:21,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:33:22,147 INFO L225 Difference]: With dead ends: 402961 [2018-09-14 17:33:22,147 INFO L226 Difference]: Without dead ends: 211233 [2018-09-14 17:33:22,778 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1386 GetRequests, 1358 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2018-09-14 17:33:22,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211233 states. Received shutdown request... [2018-09-14 17:33:24,887 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:33:24,893 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:33:24,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:33:24 BoogieIcfgContainer [2018-09-14 17:33:24,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:33:24,894 INFO L168 Benchmark]: Toolchain (without parser) took 221649.63 ms. Allocated memory was 1.5 GB in the beginning and 5.0 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-09-14 17:33:24,895 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 17:33:24,895 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2761.34 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: 348.8 MB). Peak memory consumption was 348.8 MB. Max. memory is 7.1 GB. [2018-09-14 17:33:24,896 INFO L168 Benchmark]: Boogie Procedure Inliner took 310.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:33:24,897 INFO L168 Benchmark]: Boogie Preprocessor took 1204.08 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-09-14 17:33:24,898 INFO L168 Benchmark]: RCFGBuilder took 11996.40 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 161.5 MB). Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: -2.8 MB). Peak memory consumption was 746.0 MB. Max. memory is 7.1 GB. [2018-09-14 17:33:24,899 INFO L168 Benchmark]: TraceAbstraction took 205368.36 ms. Allocated memory was 2.7 GB in the beginning and 5.0 GB in the end (delta: 2.3 GB). Free memory was 2.4 GB in the beginning and 3.0 GB in the end (delta: -644.8 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-09-14 17:33:24,904 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2761.34 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: 348.8 MB). Peak memory consumption was 348.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 310.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1204.08 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11996.40 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 161.5 MB). Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: -2.8 MB). Peak memory consumption was 746.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205368.36 ms. Allocated memory was 2.7 GB in the beginning and 5.0 GB in the end (delta: 2.3 GB). Free memory was 2.4 GB in the beginning and 3.0 GB in the end (delta: -644.8 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 120). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 205.2s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 171.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4648 SDtfs, 37542 SDslu, 6041 SDs, 0 SdLazy, 70891 SolverSat, 15894 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 130.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4566 GetRequests, 4452 SyntacticMatches, 19 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191739occurred in iteration=8, 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: 14.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 4825 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 4059 NumberOfCodeBlocks, 4059 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 6259 ConstructedInterpolants, 0 QuantifiedInterpolants, 4399167 SizeOfPredicates, 3 NumberOfNonLiveVariables, 4030 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 23 InterpolantComputations, 6 PerfectInterpolantSequences, 5622/6091 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/Problem13_label15_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-33-24-923.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label15_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-33-24-923.csv Completed graceful shutdown