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 -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1250_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2c62905 [2018-09-19 16:35:38,166 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 16:35:38,168 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 16:35:38,181 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 16:35:38,181 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 16:35:38,182 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 16:35:38,187 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 16:35:38,189 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 16:35:38,193 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 16:35:38,194 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 16:35:38,197 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 16:35:38,197 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 16:35:38,199 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 16:35:38,200 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 16:35:38,201 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 16:35:38,202 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 16:35:38,203 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 16:35:38,205 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 16:35:38,207 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 16:35:38,209 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 16:35:38,210 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 16:35:38,211 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 16:35:38,214 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 16:35:38,214 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 16:35:38,214 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 16:35:38,215 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 16:35:38,216 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 16:35:38,217 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 16:35:38,218 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 16:35:38,220 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 16:35:38,220 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 16:35:38,221 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 16:35:38,221 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 16:35:38,221 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 16:35:38,222 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 16:35:38,223 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 16:35:38,223 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-19 16:35:38,241 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 16:35:38,241 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 16:35:38,242 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 16:35:38,242 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-19 16:35:38,243 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-19 16:35:38,243 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-19 16:35:38,243 INFO L133 SettingsManager]: * Use SBE=true [2018-09-19 16:35:38,244 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 16:35:38,244 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-19 16:35:38,244 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-19 16:35:38,244 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 16:35:38,245 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 16:35:38,245 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 16:35:38,245 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 16:35:38,245 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-19 16:35:38,245 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-19 16:35:38,246 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-19 16:35:38,246 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 16:35:38,246 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 16:35:38,246 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 16:35:38,247 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 16:35:38,247 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 16:35:38,247 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 16:35:38,247 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 16:35:38,248 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 16:35:38,248 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 16:35:38,248 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 16:35:38,248 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-19 16:35:38,249 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 16:35:38,249 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-19 16:35:38,249 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-19 16:35:38,249 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 16:35:38,303 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 16:35:38,318 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 16:35:38,322 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 16:35:38,324 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 16:35:38,325 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 16:35:38,325 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-09-19 16:35:38,724 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05ec5bf94/202e01ec6f7f427e9263299e8f66c0e0/FLAG4b72ccba0 [2018-09-19 16:35:38,856 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 16:35:38,857 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1250_true-unreach-call.c [2018-09-19 16:35:38,864 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05ec5bf94/202e01ec6f7f427e9263299e8f66c0e0/FLAG4b72ccba0 [2018-09-19 16:35:38,881 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05ec5bf94/202e01ec6f7f427e9263299e8f66c0e0 [2018-09-19 16:35:38,891 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 16:35:38,894 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-19 16:35:38,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 16:35:38,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 16:35:38,902 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 16:35:38,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:35:38" (1/1) ... [2018-09-19 16:35:38,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac53d78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:38, skipping insertion in model container [2018-09-19 16:35:38,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 04:35:38" (1/1) ... [2018-09-19 16:35:38,920 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 16:35:39,169 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:35:39,194 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 16:35:39,218 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 16:35:39,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:39 WrapperNode [2018-09-19 16:35:39,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 16:35:39,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 16:35:39,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 16:35:39,269 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 16:35:39,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:39" (1/1) ... [2018-09-19 16:35:39,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:39" (1/1) ... [2018-09-19 16:35:39,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:39" (1/1) ... [2018-09-19 16:35:39,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:39" (1/1) ... [2018-09-19 16:35:39,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:39" (1/1) ... [2018-09-19 16:35:39,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:39" (1/1) ... [2018-09-19 16:35:39,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:39" (1/1) ... [2018-09-19 16:35:39,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 16:35:39,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 16:35:39,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 16:35:39,354 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 16:35:39,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:39" (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 [2018-09-19 16:35:39,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 16:35:39,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 16:35:39,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-09-19 16:35:39,503 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2018-09-19 16:35:39,503 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-09-19 16:35:39,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 16:35:39,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-19 16:35:39,504 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-09-19 16:35:39,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-19 16:35:39,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-19 16:35:39,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-19 16:35:39,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-19 16:35:39,504 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2018-09-19 16:35:39,505 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-09-19 16:35:39,505 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 16:35:39,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 16:35:39,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 16:35:39,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-19 16:35:39,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-19 16:35:39,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-19 16:35:39,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-19 16:35:39,960 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:35:39,995 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-19 16:35:40,099 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 16:35:40,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:35:40 BoogieIcfgContainer [2018-09-19 16:35:40,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 16:35:40,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 16:35:40,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 16:35:40,105 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 16:35:40,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 04:35:38" (1/3) ... [2018-09-19 16:35:40,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6df241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:35:40, skipping insertion in model container [2018-09-19 16:35:40,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 04:35:39" (2/3) ... [2018-09-19 16:35:40,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6df241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 04:35:40, skipping insertion in model container [2018-09-19 16:35:40,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 04:35:40" (3/3) ... [2018-09-19 16:35:40,110 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250_true-unreach-call.c [2018-09-19 16:35:40,120 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 16:35:40,129 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 16:35:40,183 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 16:35:40,184 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 16:35:40,184 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 16:35:40,185 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 16:35:40,185 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 16:35:40,185 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 16:35:40,185 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 16:35:40,186 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 16:35:40,186 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 16:35:40,215 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-09-19 16:35:40,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-19 16:35:40,223 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:40,224 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] [2018-09-19 16:35:40,227 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:40,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1463672781, now seen corresponding path program 1 times [2018-09-19 16:35:40,240 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:40,241 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:40,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:40,325 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:40,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:35:40,347 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:40,360 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:40,361 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 16:35:40,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 16:35:40,378 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 16:35:40,379 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 16:35:40,382 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2018-09-19 16:35:40,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:40,411 INFO L93 Difference]: Finished difference Result 81 states and 102 transitions. [2018-09-19 16:35:40,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 16:35:40,413 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-09-19 16:35:40,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:40,424 INFO L225 Difference]: With dead ends: 81 [2018-09-19 16:35:40,425 INFO L226 Difference]: Without dead ends: 41 [2018-09-19 16:35:40,429 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 16:35:40,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-09-19 16:35:40,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-09-19 16:35:40,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-19 16:35:40,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-09-19 16:35:40,478 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 24 [2018-09-19 16:35:40,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:40,479 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-09-19 16:35:40,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 16:35:40,479 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-09-19 16:35:40,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-09-19 16:35:40,482 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:40,482 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] [2018-09-19 16:35:40,482 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:40,483 INFO L82 PathProgramCache]: Analyzing trace with hash 74720519, now seen corresponding path program 1 times [2018-09-19 16:35:40,483 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:40,484 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:40,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:40,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:40,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:35:40,630 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:40,649 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:40,649 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:35:40,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:35:40,651 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:35:40,652 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:40,652 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 4 states. [2018-09-19 16:35:40,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:40,787 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2018-09-19 16:35:40,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:35:40,790 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-09-19 16:35:40,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:40,795 INFO L225 Difference]: With dead ends: 54 [2018-09-19 16:35:40,795 INFO L226 Difference]: Without dead ends: 44 [2018-09-19 16:35:40,798 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:40,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-19 16:35:40,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-09-19 16:35:40,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-19 16:35:40,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-09-19 16:35:40,814 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 33 [2018-09-19 16:35:40,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:40,814 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-09-19 16:35:40,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:35:40,814 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-09-19 16:35:40,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-19 16:35:40,816 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:40,816 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] [2018-09-19 16:35:40,820 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:40,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1160723660, now seen corresponding path program 1 times [2018-09-19 16:35:40,821 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:40,821 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:40,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:40,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:41,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:35:41,042 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:41,058 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:41,058 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:35:41,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:35:41,059 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:35:41,059 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:41,060 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 4 states. [2018-09-19 16:35:41,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:41,195 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2018-09-19 16:35:41,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:35:41,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-09-19 16:35:41,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:41,204 INFO L225 Difference]: With dead ends: 57 [2018-09-19 16:35:41,204 INFO L226 Difference]: Without dead ends: 47 [2018-09-19 16:35:41,205 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:41,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-19 16:35:41,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2018-09-19 16:35:41,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-19 16:35:41,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-09-19 16:35:41,224 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 34 [2018-09-19 16:35:41,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:41,225 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-09-19 16:35:41,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:35:41,225 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-09-19 16:35:41,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-09-19 16:35:41,229 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:41,229 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] [2018-09-19 16:35:41,230 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:41,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1978399573, now seen corresponding path program 1 times [2018-09-19 16:35:41,231 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:41,231 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 16:35:41,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:41,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:41,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:35:41,386 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:41,401 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:41,401 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:35:41,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:35:41,402 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:35:41,402 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:41,403 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 4 states. [2018-09-19 16:35:41,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:41,551 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2018-09-19 16:35:41,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:35:41,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-09-19 16:35:41,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:41,555 INFO L225 Difference]: With dead ends: 57 [2018-09-19 16:35:41,556 INFO L226 Difference]: Without dead ends: 47 [2018-09-19 16:35:41,556 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:41,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-19 16:35:41,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2018-09-19 16:35:41,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-19 16:35:41,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-09-19 16:35:41,573 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 35 [2018-09-19 16:35:41,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:41,574 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-09-19 16:35:41,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:35:41,574 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-09-19 16:35:41,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-19 16:35:41,576 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:41,576 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] [2018-09-19 16:35:41,576 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:41,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1564806168, now seen corresponding path program 1 times [2018-09-19 16:35:41,579 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:41,579 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:41,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:41,656 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:41,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:35:41,811 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:41,827 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:41,827 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:35:41,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:35:41,828 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:35:41,828 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:41,829 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 4 states. [2018-09-19 16:35:41,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:41,897 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2018-09-19 16:35:41,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:35:41,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-09-19 16:35:41,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:41,899 INFO L225 Difference]: With dead ends: 57 [2018-09-19 16:35:41,899 INFO L226 Difference]: Without dead ends: 47 [2018-09-19 16:35:41,900 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:41,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-19 16:35:41,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2018-09-19 16:35:41,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-19 16:35:41,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-09-19 16:35:41,907 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 36 [2018-09-19 16:35:41,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:41,908 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-09-19 16:35:41,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:35:41,908 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-09-19 16:35:41,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-19 16:35:41,909 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:41,910 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] [2018-09-19 16:35:41,910 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:41,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1271403161, now seen corresponding path program 1 times [2018-09-19 16:35:41,911 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:41,911 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-19 16:35:41,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:41,984 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:42,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 16:35:42,419 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:42,433 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:42,433 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-19 16:35:42,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-19 16:35:42,434 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-19 16:35:42,434 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:35:42,435 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 9 states. [2018-09-19 16:35:43,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:43,219 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-09-19 16:35:43,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-19 16:35:43,220 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-09-19 16:35:43,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:43,223 INFO L225 Difference]: With dead ends: 51 [2018-09-19 16:35:43,223 INFO L226 Difference]: Without dead ends: 44 [2018-09-19 16:35:43,224 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-19 16:35:43,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-19 16:35:43,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-09-19 16:35:43,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-19 16:35:43,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-09-19 16:35:43,230 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 36 [2018-09-19 16:35:43,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:43,231 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-09-19 16:35:43,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-19 16:35:43,231 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-09-19 16:35:43,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-09-19 16:35:43,233 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:43,233 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:43,234 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:43,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1601370173, now seen corresponding path program 1 times [2018-09-19 16:35:43,234 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:43,235 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:43,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:43,302 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:43,374 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-19 16:35:43,375 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:43,388 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:43,389 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:35:43,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:35:43,390 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:35:43,390 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:43,390 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 4 states. [2018-09-19 16:35:43,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:43,455 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2018-09-19 16:35:43,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:35:43,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-09-19 16:35:43,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:43,460 INFO L225 Difference]: With dead ends: 54 [2018-09-19 16:35:43,460 INFO L226 Difference]: Without dead ends: 44 [2018-09-19 16:35:43,461 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:43,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-19 16:35:43,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-09-19 16:35:43,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-19 16:35:43,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2018-09-19 16:35:43,469 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 49 [2018-09-19 16:35:43,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:43,469 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2018-09-19 16:35:43,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:35:43,469 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2018-09-19 16:35:43,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-19 16:35:43,471 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:43,471 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:43,471 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:43,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1724773742, now seen corresponding path program 1 times [2018-09-19 16:35:43,472 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:43,472 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:43,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:43,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:43,597 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-19 16:35:43,597 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:43,608 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:43,608 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:35:43,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:35:43,609 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:35:43,609 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:43,609 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 4 states. [2018-09-19 16:35:43,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:43,650 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2018-09-19 16:35:43,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:35:43,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2018-09-19 16:35:43,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:43,652 INFO L225 Difference]: With dead ends: 57 [2018-09-19 16:35:43,652 INFO L226 Difference]: Without dead ends: 47 [2018-09-19 16:35:43,653 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:43,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-19 16:35:43,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2018-09-19 16:35:43,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-19 16:35:43,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2018-09-19 16:35:43,659 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 50 [2018-09-19 16:35:43,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:43,660 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2018-09-19 16:35:43,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:35:43,660 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2018-09-19 16:35:43,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-19 16:35:43,661 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:43,662 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:43,662 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:43,662 INFO L82 PathProgramCache]: Analyzing trace with hash 2128784030, now seen corresponding path program 1 times [2018-09-19 16:35:43,663 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:43,663 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:43,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:43,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:43,848 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-19 16:35:43,848 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:43,859 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:43,860 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-19 16:35:43,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-19 16:35:43,860 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-19 16:35:43,860 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-19 16:35:43,861 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 5 states. [2018-09-19 16:35:44,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:44,046 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2018-09-19 16:35:44,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-19 16:35:44,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2018-09-19 16:35:44,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:44,048 INFO L225 Difference]: With dead ends: 55 [2018-09-19 16:35:44,048 INFO L226 Difference]: Without dead ends: 44 [2018-09-19 16:35:44,049 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-19 16:35:44,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-19 16:35:44,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-09-19 16:35:44,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-19 16:35:44,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2018-09-19 16:35:44,055 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 51 [2018-09-19 16:35:44,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:44,056 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2018-09-19 16:35:44,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-19 16:35:44,056 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2018-09-19 16:35:44,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-19 16:35:44,057 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:44,057 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:44,057 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:44,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1465118688, now seen corresponding path program 1 times [2018-09-19 16:35:44,058 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:44,058 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:44,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:44,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-19 16:35:44,374 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:44,388 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:44,388 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 16:35:44,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 16:35:44,389 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 16:35:44,390 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-19 16:35:44,390 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 10 states. [2018-09-19 16:35:44,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:44,860 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2018-09-19 16:35:44,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-19 16:35:44,861 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2018-09-19 16:35:44,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:44,863 INFO L225 Difference]: With dead ends: 51 [2018-09-19 16:35:44,863 INFO L226 Difference]: Without dead ends: 41 [2018-09-19 16:35:44,864 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-09-19 16:35:44,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-09-19 16:35:44,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-09-19 16:35:44,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-19 16:35:44,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-09-19 16:35:44,870 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 51 [2018-09-19 16:35:44,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:44,871 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-09-19 16:35:44,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 16:35:44,871 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-09-19 16:35:44,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-19 16:35:44,872 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:44,872 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:44,873 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:44,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1866038183, now seen corresponding path program 1 times [2018-09-19 16:35:44,873 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:44,873 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:44,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:44,948 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:44,980 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-19 16:35:44,980 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:44,994 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:44,994 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:35:44,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:35:44,995 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:35:44,995 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:44,995 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 4 states. [2018-09-19 16:35:45,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:45,022 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2018-09-19 16:35:45,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:35:45,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2018-09-19 16:35:45,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:45,023 INFO L225 Difference]: With dead ends: 54 [2018-09-19 16:35:45,024 INFO L226 Difference]: Without dead ends: 43 [2018-09-19 16:35:45,024 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:45,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-19 16:35:45,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2018-09-19 16:35:45,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-19 16:35:45,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-09-19 16:35:45,031 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 51 [2018-09-19 16:35:45,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:45,031 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-09-19 16:35:45,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:35:45,032 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-09-19 16:35:45,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-19 16:35:45,033 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:45,033 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:45,033 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:45,033 INFO L82 PathProgramCache]: Analyzing trace with hash 338446134, now seen corresponding path program 1 times [2018-09-19 16:35:45,034 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:45,034 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:45,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:45,107 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:45,130 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-19 16:35:45,131 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:45,140 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:45,141 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-19 16:35:45,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-19 16:35:45,141 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-19 16:35:45,142 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:45,142 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 4 states. [2018-09-19 16:35:45,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:45,221 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2018-09-19 16:35:45,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 16:35:45,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-09-19 16:35:45,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:45,223 INFO L225 Difference]: With dead ends: 54 [2018-09-19 16:35:45,223 INFO L226 Difference]: Without dead ends: 43 [2018-09-19 16:35:45,224 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-19 16:35:45,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-19 16:35:45,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2018-09-19 16:35:45,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-19 16:35:45,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-09-19 16:35:45,242 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 52 [2018-09-19 16:35:45,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:45,242 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-09-19 16:35:45,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-19 16:35:45,243 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-09-19 16:35:45,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-19 16:35:45,244 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 16:35:45,244 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 16:35:45,244 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 16:35:45,244 INFO L82 PathProgramCache]: Analyzing trace with hash 45043127, now seen corresponding path program 1 times [2018-09-19 16:35:45,245 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 16:35:45,245 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-09-19 16:35:45,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 16:35:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 16:35:45,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 16:35:45,530 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-19 16:35:45,530 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 16:35:45,540 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 16:35:45,540 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-19 16:35:45,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-19 16:35:45,541 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-19 16:35:45,541 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-19 16:35:45,541 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 9 states. [2018-09-19 16:35:45,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 16:35:45,889 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2018-09-19 16:35:45,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-19 16:35:45,889 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2018-09-19 16:35:45,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 16:35:45,889 INFO L225 Difference]: With dead ends: 41 [2018-09-19 16:35:45,889 INFO L226 Difference]: Without dead ends: 0 [2018-09-19 16:35:45,890 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-19 16:35:45,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-19 16:35:45,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-19 16:35:45,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-19 16:35:45,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-19 16:35:45,891 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2018-09-19 16:35:45,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 16:35:45,892 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-19 16:35:45,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-19 16:35:45,892 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-19 16:35:45,892 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-19 16:35:45,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-19 16:35:46,131 INFO L426 ceAbstractionStarter]: For program point isnan_floatFINAL(line 54) no Hoare annotation was computed. [2018-09-19 16:35:46,131 INFO L429 ceAbstractionStarter]: At program point isnan_floatENTRY(line 54) the Hoare annotation is: true [2018-09-19 16:35:46,131 INFO L426 ceAbstractionStarter]: For program point isnan_floatEXIT(line 54) no Hoare annotation was computed. [2018-09-19 16:35:46,131 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-09-19 16:35:46,131 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-09-19 16:35:46,132 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-19 16:35:46,132 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-19 16:35:46,132 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-19 16:35:46,132 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-19 16:35:46,132 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-19 16:35:46,132 INFO L426 ceAbstractionStarter]: For program point L65(line 65) no Hoare annotation was computed. [2018-09-19 16:35:46,132 INFO L422 ceAbstractionStarter]: At program point L64(line 64) the Hoare annotation is: (let ((.cse0 (fp.div RNE (_ +zero 8 24) (_ +zero 8 24)))) (and (= .cse0 main_~res~0) (= .cse0 main_~y~0))) [2018-09-19 16:35:46,132 INFO L426 ceAbstractionStarter]: For program point L64-1(lines 64 67) no Hoare annotation was computed. [2018-09-19 16:35:46,132 INFO L422 ceAbstractionStarter]: At program point L62(line 62) the Hoare annotation is: (let ((.cse0 (fp.div RNE (_ +zero 8 24) (_ +zero 8 24)))) (and (= .cse0 main_~x~0) (= .cse0 main_~y~0))) [2018-09-19 16:35:46,133 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 56 70) the Hoare annotation is: true [2018-09-19 16:35:46,133 INFO L426 ceAbstractionStarter]: For program point L62-1(line 62) no Hoare annotation was computed. [2018-09-19 16:35:46,133 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 56 70) no Hoare annotation was computed. [2018-09-19 16:35:46,133 INFO L426 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 65) no Hoare annotation was computed. [2018-09-19 16:35:46,133 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 56 70) no Hoare annotation was computed. [2018-09-19 16:35:46,133 INFO L426 ceAbstractionStarter]: For program point fmax_floatEXIT(lines 42 51) no Hoare annotation was computed. [2018-09-19 16:35:46,133 INFO L429 ceAbstractionStarter]: At program point fmax_floatENTRY(lines 42 51) the Hoare annotation is: true [2018-09-19 16:35:46,134 INFO L426 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2018-09-19 16:35:46,134 INFO L426 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2018-09-19 16:35:46,134 INFO L422 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-09-19 16:35:46,134 INFO L426 ceAbstractionStarter]: For program point L47-1(lines 47 49) no Hoare annotation was computed. [2018-09-19 16:35:46,134 INFO L422 ceAbstractionStarter]: At program point L43(line 43) the Hoare annotation is: (and (= |fmax_float_#in~y| fmax_float_~y) (= |fmax_float_#in~x| fmax_float_~x)) [2018-09-19 16:35:46,135 INFO L426 ceAbstractionStarter]: For program point L43-1(lines 43 45) no Hoare annotation was computed. [2018-09-19 16:35:46,136 INFO L426 ceAbstractionStarter]: For program point fmax_floatFINAL(lines 42 51) no Hoare annotation was computed. [2018-09-19 16:35:46,136 INFO L426 ceAbstractionStarter]: For program point L33(lines 33 39) no Hoare annotation was computed. [2018-09-19 16:35:46,136 INFO L426 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 19 40) no Hoare annotation was computed. [2018-09-19 16:35:46,136 INFO L426 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-09-19 16:35:46,136 INFO L426 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2018-09-19 16:35:46,136 INFO L426 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-09-19 16:35:46,138 INFO L426 ceAbstractionStarter]: For program point L25-2(line 25) no Hoare annotation was computed. [2018-09-19 16:35:46,138 INFO L426 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-09-19 16:35:46,138 INFO L426 ceAbstractionStarter]: For program point L23-2(line 23) no Hoare annotation was computed. [2018-09-19 16:35:46,138 INFO L426 ceAbstractionStarter]: For program point L23-3(line 23) no Hoare annotation was computed. [2018-09-19 16:35:46,138 INFO L426 ceAbstractionStarter]: For program point L36(lines 36 39) no Hoare annotation was computed. [2018-09-19 16:35:46,139 INFO L426 ceAbstractionStarter]: For program point L30(lines 30 39) no Hoare annotation was computed. [2018-09-19 16:35:46,139 INFO L426 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-09-19 16:35:46,139 INFO L426 ceAbstractionStarter]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2018-09-19 16:35:46,139 INFO L429 ceAbstractionStarter]: At program point L22-3(lines 22 26) the Hoare annotation is: true [2018-09-19 16:35:46,139 INFO L426 ceAbstractionStarter]: For program point L22-4(lines 19 40) no Hoare annotation was computed. [2018-09-19 16:35:46,139 INFO L429 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 19 40) the Hoare annotation is: true [2018-09-19 16:35:46,139 INFO L426 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 19 40) no Hoare annotation was computed. [2018-09-19 16:35:46,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 04:35:46 BoogieIcfgContainer [2018-09-19 16:35:46,147 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 16:35:46,147 INFO L168 Benchmark]: Toolchain (without parser) took 7255.71 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 715.7 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -387.4 MB). Peak memory consumption was 328.3 MB. Max. memory is 7.1 GB. [2018-09-19 16:35:46,150 INFO L168 Benchmark]: CDTParser took 0.27 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. [2018-09-19 16:35:46,151 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2018-09-19 16:35:46,152 INFO L168 Benchmark]: Boogie Preprocessor took 84.22 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. [2018-09-19 16:35:46,152 INFO L168 Benchmark]: RCFGBuilder took 747.18 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 715.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -763.8 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2018-09-19 16:35:46,153 INFO L168 Benchmark]: TraceAbstraction took 6045.18 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 349.6 MB). Peak memory consumption was 349.6 MB. Max. memory is 7.1 GB. [2018-09-19 16:35:46,158 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 373.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.22 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. * RCFGBuilder took 747.18 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 715.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -763.8 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6045.18 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 349.6 MB). Peak memory consumption was 349.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 65]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 45 locations, 1 error locations. SAFE Result, 5.9s OverallTime, 13 OverallIterations, 2 TraceHistogramMax, 2.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 602 SDtfs, 31 SDslu, 1644 SDs, 0 SdLazy, 215 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 555 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, 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: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 19 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 28 PreInvPairs, 33 NumberOfFragments, 48 HoareAnnotationTreeSize, 28 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 554 NumberOfCodeBlocks, 554 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 541 ConstructedInterpolants, 3 QuantifiedInterpolants, 37399 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1205 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 98/98 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...