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_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:41:27,194 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:41:27,196 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:41:27,212 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:41:27,212 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:41:27,214 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:41:27,215 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:41:27,216 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:41:27,218 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:41:27,219 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:41:27,220 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:41:27,220 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:41:27,221 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:41:27,222 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:41:27,223 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:41:27,224 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:41:27,225 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:41:27,227 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:41:27,229 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:41:27,231 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:41:27,232 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:41:27,233 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:41:27,236 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 11:41:27,236 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 11:41:27,237 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 11:41:27,238 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 11:41:27,239 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 11:41:27,240 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 11:41:27,241 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 11:41:27,242 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 11:41:27,242 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 11:41:27,243 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 11:41:27,243 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:41:27,244 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:41:27,245 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:41:27,245 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:41:27,246 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 11:41:27,269 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:41:27,269 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:41:27,270 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:41:27,270 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:41:27,270 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:41:27,271 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:41:27,271 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:41:27,271 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:41:27,271 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:41:27,272 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:41:27,272 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:41:27,272 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:41:27,273 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:41:27,273 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:41:27,273 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:41:27,273 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:41:27,273 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:41:27,274 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:41:27,274 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:41:27,274 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:41:27,274 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:41:27,274 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:41:27,275 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:41:27,275 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:41:27,275 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:41:27,275 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:41:27,275 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:41:27,276 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:41:27,276 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:41:27,276 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:41:27,276 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:41:27,276 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:41:27,277 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:41:27,277 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:41:27,324 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:41:27,341 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:41:27,347 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:41:27,349 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:41:27,349 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:41:27,350 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label22_true-unreach-call.c [2018-09-18 11:41:27,683 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acc4d7fb6/aab95ad98e404ae9ac5b55ec44047f8f/FLAG26ce4a9fd [2018-09-18 11:41:28,189 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:41:28,190 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label22_true-unreach-call.c [2018-09-18 11:41:28,222 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acc4d7fb6/aab95ad98e404ae9ac5b55ec44047f8f/FLAG26ce4a9fd [2018-09-18 11:41:28,239 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acc4d7fb6/aab95ad98e404ae9ac5b55ec44047f8f [2018-09-18 11:41:28,250 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:41:28,253 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:41:28,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:41:28,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:41:28,264 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:41:28,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:41:28" (1/1) ... [2018-09-18 11:41:28,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1119bd7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:28, skipping insertion in model container [2018-09-18 11:41:28,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:41:28" (1/1) ... [2018-09-18 11:41:28,281 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:41:29,784 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:41:29,806 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:41:30,602 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:41:30,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:30 WrapperNode [2018-09-18 11:41:30,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:41:30,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:41:30,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:41:30,969 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:41:30,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:30" (1/1) ... [2018-09-18 11:41:31,110 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:30" (1/1) ... [2018-09-18 11:41:31,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:41:31,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:41:31,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:41:31,310 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:41:32,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:30" (1/1) ... [2018-09-18 11:41:32,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:30" (1/1) ... [2018-09-18 11:41:32,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:30" (1/1) ... [2018-09-18 11:41:32,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:30" (1/1) ... [2018-09-18 11:41:32,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:30" (1/1) ... [2018-09-18 11:41:32,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:30" (1/1) ... [2018-09-18 11:41:32,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:30" (1/1) ... [2018-09-18 11:41:32,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:41:32,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:41:32,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:41:32,669 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:41:32,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:30" (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 11:41:32,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:41:32,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:41:32,751 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 11:41:32,751 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 11:41:32,751 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 11:41:32,751 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 11:41:32,751 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 11:41:32,752 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 11:41:32,752 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:41:32,752 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:41:32,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:41:32,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:41:32,753 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:41:32,753 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:41:45,202 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:41:45,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:41:45 BoogieIcfgContainer [2018-09-18 11:41:45,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:41:45,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:41:45,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:41:45,208 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:41:45,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:41:28" (1/3) ... [2018-09-18 11:41:45,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7330df8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:41:45, skipping insertion in model container [2018-09-18 11:41:45,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:41:30" (2/3) ... [2018-09-18 11:41:45,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7330df8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:41:45, skipping insertion in model container [2018-09-18 11:41:45,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:41:45" (3/3) ... [2018-09-18 11:41:45,212 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label22_true-unreach-call.c [2018-09-18 11:41:45,222 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:41:45,235 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:41:45,317 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:41:45,318 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:41:45,318 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:41:45,319 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:41:45,319 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:41:45,319 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:41:45,319 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:41:45,319 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:41:45,319 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:41:45,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-18 11:41:45,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-18 11:41:45,377 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:41:45,379 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] [2018-09-18 11:41:45,380 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:41:45,385 INFO L82 PathProgramCache]: Analyzing trace with hash -380938253, now seen corresponding path program 1 times [2018-09-18 11:41:45,388 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:41:45,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:41:45,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:41:45,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:41:45,448 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:41:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:41:45,891 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-09-18 11:41:45,914 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 11:41:45,921 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:41:45,922 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:41:45,922 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:41:45,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:41:45,948 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:41:45,949 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:41:45,952 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-09-18 11:42:04,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:42:04,767 INFO L93 Difference]: Finished difference Result 4105 states and 7669 transitions. [2018-09-18 11:42:04,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:42:04,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-09-18 11:42:04,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:42:04,824 INFO L225 Difference]: With dead ends: 4105 [2018-09-18 11:42:04,824 INFO L226 Difference]: Without dead ends: 2979 [2018-09-18 11:42:04,840 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:42:04,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2018-09-18 11:42:05,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2849. [2018-09-18 11:42:05,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2849 states. [2018-09-18 11:42:05,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 5075 transitions. [2018-09-18 11:42:05,058 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 5075 transitions. Word has length 39 [2018-09-18 11:42:05,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:42:05,058 INFO L480 AbstractCegarLoop]: Abstraction has 2849 states and 5075 transitions. [2018-09-18 11:42:05,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:42:05,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 5075 transitions. [2018-09-18 11:42:05,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-09-18 11:42:05,073 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:42:05,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:05,074 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:42:05,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1766897295, now seen corresponding path program 1 times [2018-09-18 11:42:05,075 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:42:05,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:05,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:42:05,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:05,077 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:42:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:42:05,562 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:42:05,562 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:42:05,563 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:42:05,563 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:42:05,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:42:05,565 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:42:05,565 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:42:05,565 INFO L87 Difference]: Start difference. First operand 2849 states and 5075 transitions. Second operand 6 states. [2018-09-18 11:42:22,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:42:22,586 INFO L93 Difference]: Finished difference Result 10635 states and 19580 transitions. [2018-09-18 11:42:22,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:42:22,587 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2018-09-18 11:42:22,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:42:22,652 INFO L225 Difference]: With dead ends: 10635 [2018-09-18 11:42:22,653 INFO L226 Difference]: Without dead ends: 7792 [2018-09-18 11:42:22,674 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:42:22,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2018-09-18 11:42:22,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7729. [2018-09-18 11:42:22,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7729 states. [2018-09-18 11:42:22,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7729 states to 7729 states and 12373 transitions. [2018-09-18 11:42:22,911 INFO L78 Accepts]: Start accepts. Automaton has 7729 states and 12373 transitions. Word has length 110 [2018-09-18 11:42:22,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:42:22,912 INFO L480 AbstractCegarLoop]: Abstraction has 7729 states and 12373 transitions. [2018-09-18 11:42:22,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:42:22,913 INFO L276 IsEmpty]: Start isEmpty. Operand 7729 states and 12373 transitions. [2018-09-18 11:42:22,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-09-18 11:42:22,922 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:42:22,922 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:22,923 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:42:22,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1433958942, now seen corresponding path program 1 times [2018-09-18 11:42:22,923 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:42:22,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:22,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:42:22,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:22,928 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:42:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:42:23,166 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:42:23,226 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:42:23,226 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:42:23,227 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:42:23,227 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:42:23,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:42:23,228 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:42:23,228 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:42:23,228 INFO L87 Difference]: Start difference. First operand 7729 states and 12373 transitions. Second operand 6 states. [2018-09-18 11:42:40,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:42:40,236 INFO L93 Difference]: Finished difference Result 21334 states and 35505 transitions. [2018-09-18 11:42:40,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:42:40,236 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-09-18 11:42:40,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:42:40,304 INFO L225 Difference]: With dead ends: 21334 [2018-09-18 11:42:40,304 INFO L226 Difference]: Without dead ends: 13611 [2018-09-18 11:42:40,342 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:42:40,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13611 states. [2018-09-18 11:42:40,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13611 to 13533. [2018-09-18 11:42:40,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13533 states. [2018-09-18 11:42:40,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13533 states to 13533 states and 20794 transitions. [2018-09-18 11:42:40,703 INFO L78 Accepts]: Start accepts. Automaton has 13533 states and 20794 transitions. Word has length 113 [2018-09-18 11:42:40,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:42:40,703 INFO L480 AbstractCegarLoop]: Abstraction has 13533 states and 20794 transitions. [2018-09-18 11:42:40,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:42:40,704 INFO L276 IsEmpty]: Start isEmpty. Operand 13533 states and 20794 transitions. [2018-09-18 11:42:40,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-09-18 11:42:40,708 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:42:40,708 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:40,708 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:42:40,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1170956786, now seen corresponding path program 1 times [2018-09-18 11:42:40,709 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:42:40,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:40,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:42:40,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:40,711 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:42:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:42:41,030 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:42:41,031 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:42:41,031 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:42:41,031 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:42:41,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:42:41,032 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:42:41,032 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:42:41,032 INFO L87 Difference]: Start difference. First operand 13533 states and 20794 transitions. Second operand 5 states. [2018-09-18 11:42:53,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:42:53,470 INFO L93 Difference]: Finished difference Result 40056 states and 65129 transitions. [2018-09-18 11:42:53,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:42:53,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2018-09-18 11:42:53,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:42:53,574 INFO L225 Difference]: With dead ends: 40056 [2018-09-18 11:42:53,575 INFO L226 Difference]: Without dead ends: 26529 [2018-09-18 11:42:53,621 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:42:53,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26529 states. [2018-09-18 11:42:54,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26529 to 26229. [2018-09-18 11:42:54,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26229 states. [2018-09-18 11:42:54,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26229 states to 26229 states and 38611 transitions. [2018-09-18 11:42:54,241 INFO L78 Accepts]: Start accepts. Automaton has 26229 states and 38611 transitions. Word has length 123 [2018-09-18 11:42:54,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:42:54,242 INFO L480 AbstractCegarLoop]: Abstraction has 26229 states and 38611 transitions. [2018-09-18 11:42:54,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:42:54,242 INFO L276 IsEmpty]: Start isEmpty. Operand 26229 states and 38611 transitions. [2018-09-18 11:42:54,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-18 11:42:54,246 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:42:54,247 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:42:54,247 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:42:54,247 INFO L82 PathProgramCache]: Analyzing trace with hash 531830176, now seen corresponding path program 1 times [2018-09-18 11:42:54,247 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:42:54,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:54,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:42:54,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:42:54,249 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:42:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:42:54,593 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:42:55,107 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:42:55,107 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:42:55,107 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 11:42:55,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:42:55,123 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:42:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:42:55,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:42:55,527 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-18 11:42:55,528 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:42:56,242 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-18 11:42:56,278 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:42:56,278 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 11 [2018-09-18 11:42:56,279 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:42:56,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:42:56,280 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:42:56,280 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:42:56,280 INFO L87 Difference]: Start difference. First operand 26229 states and 38611 transitions. Second operand 4 states. [2018-09-18 11:43:06,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:43:06,903 INFO L93 Difference]: Finished difference Result 71968 states and 111300 transitions. [2018-09-18 11:43:06,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:43:06,904 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2018-09-18 11:43:06,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:43:07,144 INFO L225 Difference]: With dead ends: 71968 [2018-09-18 11:43:07,145 INFO L226 Difference]: Without dead ends: 45745 [2018-09-18 11:43:07,210 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 278 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:43:07,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45745 states. [2018-09-18 11:43:08,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45745 to 45738. [2018-09-18 11:43:08,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45738 states. [2018-09-18 11:43:08,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45738 states to 45738 states and 66980 transitions. [2018-09-18 11:43:08,329 INFO L78 Accepts]: Start accepts. Automaton has 45738 states and 66980 transitions. Word has length 140 [2018-09-18 11:43:08,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:43:08,331 INFO L480 AbstractCegarLoop]: Abstraction has 45738 states and 66980 transitions. [2018-09-18 11:43:08,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:43:08,331 INFO L276 IsEmpty]: Start isEmpty. Operand 45738 states and 66980 transitions. [2018-09-18 11:43:08,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-09-18 11:43:08,335 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:43:08,335 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:43:08,335 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:43:08,336 INFO L82 PathProgramCache]: Analyzing trace with hash 654163462, now seen corresponding path program 1 times [2018-09-18 11:43:08,336 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:43:08,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:08,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:08,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:08,338 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:43:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:08,621 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:43:09,011 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:43:09,012 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:43:09,012 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:43:09,012 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:43:09,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:43:09,013 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:43:09,013 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:43:09,013 INFO L87 Difference]: Start difference. First operand 45738 states and 66980 transitions. Second operand 6 states. [2018-09-18 11:43:20,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:43:20,481 INFO L93 Difference]: Finished difference Result 120180 states and 196802 transitions. [2018-09-18 11:43:20,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:43:20,487 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-09-18 11:43:20,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:43:20,878 INFO L225 Difference]: With dead ends: 120180 [2018-09-18 11:43:20,879 INFO L226 Difference]: Without dead ends: 74448 [2018-09-18 11:43:21,005 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:43:21,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74448 states. [2018-09-18 11:43:22,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74448 to 74270. [2018-09-18 11:43:22,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74270 states. [2018-09-18 11:43:22,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74270 states to 74270 states and 110948 transitions. [2018-09-18 11:43:22,642 INFO L78 Accepts]: Start accepts. Automaton has 74270 states and 110948 transitions. Word has length 149 [2018-09-18 11:43:22,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:43:22,643 INFO L480 AbstractCegarLoop]: Abstraction has 74270 states and 110948 transitions. [2018-09-18 11:43:22,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:43:22,643 INFO L276 IsEmpty]: Start isEmpty. Operand 74270 states and 110948 transitions. [2018-09-18 11:43:22,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-09-18 11:43:22,656 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:43:22,656 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 11:43:22,656 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:43:22,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1781143659, now seen corresponding path program 1 times [2018-09-18 11:43:22,657 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:43:22,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:22,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:22,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:22,658 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:43:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:23,831 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 113 proven. 30 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:43:23,831 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:43:23,831 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 11:43:23,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:23,845 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:43:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:23,936 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:43:24,033 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-09-18 11:43:24,033 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:43:24,141 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-18 11:43:24,161 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:43:24,161 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 3] total 7 [2018-09-18 11:43:24,162 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:43:24,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:43:24,162 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:43:24,163 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-18 11:43:24,163 INFO L87 Difference]: Start difference. First operand 74270 states and 110948 transitions. Second operand 3 states. [2018-09-18 11:43:31,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:43:31,765 INFO L93 Difference]: Finished difference Result 171238 states and 262450 transitions. [2018-09-18 11:43:31,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:43:31,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 244 [2018-09-18 11:43:31,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:43:32,183 INFO L225 Difference]: With dead ends: 171238 [2018-09-18 11:43:32,183 INFO L226 Difference]: Without dead ends: 96974 [2018-09-18 11:43:33,047 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-18 11:43:33,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96974 states. [2018-09-18 11:43:34,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96974 to 95366. [2018-09-18 11:43:34,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95366 states. [2018-09-18 11:43:34,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95366 states to 95366 states and 137604 transitions. [2018-09-18 11:43:34,677 INFO L78 Accepts]: Start accepts. Automaton has 95366 states and 137604 transitions. Word has length 244 [2018-09-18 11:43:34,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:43:34,678 INFO L480 AbstractCegarLoop]: Abstraction has 95366 states and 137604 transitions. [2018-09-18 11:43:34,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:43:34,678 INFO L276 IsEmpty]: Start isEmpty. Operand 95366 states and 137604 transitions. [2018-09-18 11:43:34,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-09-18 11:43:34,691 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:43:34,691 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:43:34,692 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:43:34,692 INFO L82 PathProgramCache]: Analyzing trace with hash 576031913, now seen corresponding path program 1 times [2018-09-18 11:43:34,692 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:43:34,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:34,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:34,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:34,695 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:43:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:35,309 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:43:35,310 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:43:35,310 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 11:43:35,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:35,326 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:43:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:35,426 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:43:35,815 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:43:35,815 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:43:36,088 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:43:36,121 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:43:36,121 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 11:43:36,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:36,150 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:43:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:36,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:43:36,551 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-18 11:43:36,551 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:43:36,799 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-18 11:43:36,801 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-18 11:43:36,801 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 16 [2018-09-18 11:43:36,801 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:43:36,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:43:36,802 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:43:36,802 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-09-18 11:43:36,802 INFO L87 Difference]: Start difference. First operand 95366 states and 137604 transitions. Second operand 5 states. [2018-09-18 11:43:48,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:43:48,948 INFO L93 Difference]: Finished difference Result 199534 states and 289001 transitions. [2018-09-18 11:43:48,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:43:48,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 267 [2018-09-18 11:43:48,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:43:49,406 INFO L225 Difference]: With dead ends: 199534 [2018-09-18 11:43:49,406 INFO L226 Difference]: Without dead ends: 104174 [2018-09-18 11:43:49,572 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1073 GetRequests, 1057 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-09-18 11:43:49,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104174 states. [2018-09-18 11:43:52,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104174 to 103370. [2018-09-18 11:43:52,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103370 states. [2018-09-18 11:43:52,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103370 states to 103370 states and 142884 transitions. [2018-09-18 11:43:52,436 INFO L78 Accepts]: Start accepts. Automaton has 103370 states and 142884 transitions. Word has length 267 [2018-09-18 11:43:52,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:43:52,437 INFO L480 AbstractCegarLoop]: Abstraction has 103370 states and 142884 transitions. [2018-09-18 11:43:52,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:43:52,437 INFO L276 IsEmpty]: Start isEmpty. Operand 103370 states and 142884 transitions. [2018-09-18 11:43:52,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-09-18 11:43:52,454 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:43:52,454 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 11:43:52,454 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:43:52,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1696717476, now seen corresponding path program 1 times [2018-09-18 11:43:52,455 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:43:52,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:52,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:52,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:43:52,456 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:43:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:52,989 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 244 proven. 71 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-18 11:43:52,989 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:43:52,989 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 11:43:52,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:43:52,998 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:43:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:43:53,090 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:43:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 98 proven. 4 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-09-18 11:43:53,569 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:43:53,722 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-18 11:43:53,827 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-18 11:43:54,030 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-09-18 11:43:54,051 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:43:54,051 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-18 11:43:54,051 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:43:54,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:43:54,052 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:43:54,052 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-18 11:43:54,052 INFO L87 Difference]: Start difference. First operand 103370 states and 142884 transitions. Second operand 5 states. [2018-09-18 11:44:07,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:44:07,052 INFO L93 Difference]: Finished difference Result 277444 states and 402242 transitions. [2018-09-18 11:44:07,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:44:07,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 285 [2018-09-18 11:44:07,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:44:07,703 INFO L225 Difference]: With dead ends: 277444 [2018-09-18 11:44:07,703 INFO L226 Difference]: Without dead ends: 174080 [2018-09-18 11:44:07,900 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 562 SyntacticMatches, 7 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:44:08,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174080 states. [2018-09-18 11:44:11,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174080 to 167881. [2018-09-18 11:44:11,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167881 states. [2018-09-18 11:44:13,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167881 states to 167881 states and 234192 transitions. [2018-09-18 11:44:13,362 INFO L78 Accepts]: Start accepts. Automaton has 167881 states and 234192 transitions. Word has length 285 [2018-09-18 11:44:13,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:44:13,363 INFO L480 AbstractCegarLoop]: Abstraction has 167881 states and 234192 transitions. [2018-09-18 11:44:13,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:44:13,363 INFO L276 IsEmpty]: Start isEmpty. Operand 167881 states and 234192 transitions. [2018-09-18 11:44:13,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-09-18 11:44:13,376 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:44:13,376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:44:13,377 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:44:13,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1919077756, now seen corresponding path program 1 times [2018-09-18 11:44:13,377 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:44:13,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:44:13,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:44:13,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:44:13,378 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:44:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:44:13,667 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-09-18 11:44:13,667 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:44:13,667 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:44:13,668 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:44:13,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:44:13,668 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:44:13,669 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:44:13,669 INFO L87 Difference]: Start difference. First operand 167881 states and 234192 transitions. Second operand 4 states. [2018-09-18 11:44:30,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:44:30,822 INFO L93 Difference]: Finished difference Result 417957 states and 601124 transitions. [2018-09-18 11:44:30,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:44:30,823 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 302 [2018-09-18 11:44:30,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:44:31,565 INFO L225 Difference]: With dead ends: 417957 [2018-09-18 11:44:31,565 INFO L226 Difference]: Without dead ends: 244363 [2018-09-18 11:44:31,884 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 11:44:32,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244363 states. [2018-09-18 11:44:41,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244363 to 239468. [2018-09-18 11:44:41,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239468 states. [2018-09-18 11:44:42,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239468 states to 239468 states and 322738 transitions. [2018-09-18 11:44:42,348 INFO L78 Accepts]: Start accepts. Automaton has 239468 states and 322738 transitions. Word has length 302 [2018-09-18 11:44:42,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:44:42,348 INFO L480 AbstractCegarLoop]: Abstraction has 239468 states and 322738 transitions. [2018-09-18 11:44:42,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:44:42,348 INFO L276 IsEmpty]: Start isEmpty. Operand 239468 states and 322738 transitions. [2018-09-18 11:44:42,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-09-18 11:44:42,363 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:44:42,363 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:44:42,363 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:44:42,364 INFO L82 PathProgramCache]: Analyzing trace with hash 64429177, now seen corresponding path program 1 times [2018-09-18 11:44:42,364 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:44:42,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:44:42,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:44:42,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:44:42,365 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:44:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:44:43,562 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 174 proven. 74 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-18 11:44:43,563 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:44:43,563 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 [2018-09-18 11:44:43,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:44:43,571 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:44:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:44:43,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:44:43,834 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-09-18 11:44:43,835 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:44:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 174 proven. 74 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-18 11:44:44,025 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:44:44,025 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 [2018-09-18 11:44:44,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:44:44,045 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:44:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:44:44,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:44:44,399 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 185 proven. 60 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 11:44:44,399 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:44:44,621 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 241 proven. 4 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 11:44:44,623 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:44:44,623 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6, 4, 4] total 19 [2018-09-18 11:44:44,623 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:44:44,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-18 11:44:44,624 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-18 11:44:44,625 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2018-09-18 11:44:44,625 INFO L87 Difference]: Start difference. First operand 239468 states and 322738 transitions. Second operand 12 states. Received shutdown request... [2018-09-18 11:45:08,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-18 11:45:08,317 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 11:45:08,323 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 11:45:08,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 11:45:08 BoogieIcfgContainer [2018-09-18 11:45:08,324 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 11:45:08,325 INFO L168 Benchmark]: Toolchain (without parser) took 220074.45 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-09-18 11:45:08,326 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 11:45:08,327 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2713.73 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: 338.2 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. [2018-09-18 11:45:08,328 INFO L168 Benchmark]: Boogie Procedure Inliner took 340.71 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-09-18 11:45:08,328 INFO L168 Benchmark]: Boogie Preprocessor took 1358.61 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 989.9 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-09-18 11:45:08,329 INFO L168 Benchmark]: RCFGBuilder took 12534.44 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 172.5 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -28.9 MB). Peak memory consumption was 759.6 MB. Max. memory is 7.1 GB. [2018-09-18 11:45:08,330 INFO L168 Benchmark]: TraceAbstraction took 203119.77 ms. Allocated memory was 2.7 GB in the beginning and 4.9 GB in the end (delta: 2.2 GB). Free memory was 2.3 GB in the beginning and 3.2 GB in the end (delta: -852.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-09-18 11:45:08,336 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 2713.73 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: 338.2 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 340.71 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1358.61 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 989.9 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12534.44 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 172.5 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -28.9 MB). Peak memory consumption was 759.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203119.77 ms. Allocated memory was 2.7 GB in the beginning and 4.9 GB in the end (delta: 2.2 GB). Free memory was 2.3 GB in the beginning and 3.2 GB in the end (delta: -852.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 108). Cancelled while BasicCegarLoop was constructing difference of abstraction (239468states) and FLOYD_HOARE automaton (currently 45 states, 12 states before enhancement), while ReachableStatesComputation was computing reachable states (166679 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 203.0s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 166.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7280 SDtfs, 47334 SDslu, 5193 SDs, 0 SdLazy, 64172 SolverSat, 17525 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 129.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3849 GetRequests, 3712 SyntacticMatches, 13 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=239468occurred 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: 24.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 14262 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 3938 NumberOfCodeBlocks, 3938 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 5758 ConstructedInterpolants, 0 QuantifiedInterpolants, 4618967 SizeOfPredicates, 19 NumberOfNonLiveVariables, 3427 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 25 InterpolantComputations, 10 PerfectInterpolantSequences, 3973/4347 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_label22_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-45-08-351.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label22_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_11-45-08-351.csv Completed graceful shutdown