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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label49_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:28:53,237 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:28:53,238 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:28:53,251 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:28:53,251 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:28:53,252 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:28:53,253 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:28:53,255 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:28:53,257 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:28:53,258 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:28:53,259 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:28:53,259 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:28:53,260 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:28:53,261 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:28:53,262 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:28:53,263 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:28:53,264 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:28:53,266 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:28:53,270 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:28:53,271 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:28:53,273 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:28:53,274 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:28:53,276 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 03:28:53,277 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 03:28:53,277 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 03:28:53,278 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 03:28:53,279 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 03:28:53,283 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 03:28:53,284 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 03:28:53,286 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 03:28:53,287 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 03:28:53,287 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 03:28:53,290 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:28:53,310 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:28:53,310 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:28:53,311 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:28:53,311 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:28:53,311 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:28:53,311 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:28:53,312 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:28:53,312 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:28:53,312 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:28:53,312 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:28:53,312 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:28:53,313 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:28:53,314 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:28:53,314 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:28:53,314 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:28:53,314 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:28:53,314 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:28:53,315 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:28:53,315 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:28:53,315 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:28:53,315 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:28:53,315 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:28:53,315 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:28:53,316 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:28:53,316 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:28:53,316 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:28:53,316 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:28:53,317 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:28:53,317 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:28:53,317 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:28:53,317 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:28:53,317 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:28:53,317 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:28:53,318 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:28:53,363 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:28:53,377 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:28:53,381 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:28:53,383 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:28:53,383 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:28:53,384 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label49_true-unreach-call_false-termination.c [2018-11-07 03:28:53,453 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/904c7a452/5cb0e32856f5412c849e6b894bd2f824/FLAG19fd8f059 [2018-11-07 03:28:54,127 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:28:54,128 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label49_true-unreach-call_false-termination.c [2018-11-07 03:28:54,151 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/904c7a452/5cb0e32856f5412c849e6b894bd2f824/FLAG19fd8f059 [2018-11-07 03:28:54,171 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/904c7a452/5cb0e32856f5412c849e6b894bd2f824 [2018-11-07 03:28:54,184 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:28:54,187 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:28:54,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:28:54,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:28:54,192 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:28:54,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:28:54" (1/1) ... [2018-11-07 03:28:54,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b2cf48a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:54, skipping insertion in model container [2018-11-07 03:28:54,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:28:54" (1/1) ... [2018-11-07 03:28:54,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:28:54,283 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:28:54,845 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:28:54,850 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:28:55,003 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:28:55,028 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:28:55,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:55 WrapperNode [2018-11-07 03:28:55,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:28:55,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:28:55,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:28:55,030 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:28:55,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:55" (1/1) ... [2018-11-07 03:28:55,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:55" (1/1) ... [2018-11-07 03:28:55,167 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:28:55,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:28:55,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:28:55,168 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:28:55,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:55" (1/1) ... [2018-11-07 03:28:55,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:55" (1/1) ... [2018-11-07 03:28:55,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:55" (1/1) ... [2018-11-07 03:28:55,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:55" (1/1) ... [2018-11-07 03:28:55,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:55" (1/1) ... [2018-11-07 03:28:55,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:55" (1/1) ... [2018-11-07 03:28:55,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:55" (1/1) ... [2018-11-07 03:28:55,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:28:55,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:28:55,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:28:55,296 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:28:55,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:55" (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 [2018-11-07 03:28:55,371 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:28:55,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:28:55,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:28:55,371 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:28:55,372 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:28:55,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:28:55,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:28:55,372 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:28:55,372 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:28:59,122 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:28:59,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:28:59 BoogieIcfgContainer [2018-11-07 03:28:59,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:28:59,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:28:59,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:28:59,129 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:28:59,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:28:54" (1/3) ... [2018-11-07 03:28:59,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f276dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:28:59, skipping insertion in model container [2018-11-07 03:28:59,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:55" (2/3) ... [2018-11-07 03:28:59,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f276dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:28:59, skipping insertion in model container [2018-11-07 03:28:59,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:28:59" (3/3) ... [2018-11-07 03:28:59,133 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label49_true-unreach-call_false-termination.c [2018-11-07 03:28:59,144 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:28:59,153 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:28:59,171 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:28:59,211 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:28:59,211 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:28:59,211 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:28:59,212 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:28:59,212 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:28:59,212 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:28:59,212 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:28:59,213 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:28:59,242 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 03:28:59,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-11-07 03:28:59,253 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:28:59,254 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:28:59,256 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:28:59,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:28:59,263 INFO L82 PathProgramCache]: Analyzing trace with hash -825405036, now seen corresponding path program 1 times [2018-11-07 03:28:59,266 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:28:59,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:28:59,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:28:59,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:28:59,325 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:28:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:28:59,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:28:59,842 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:28:59,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:28:59,843 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:28:59,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:28:59,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:28:59,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:28:59,873 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-11-07 03:29:02,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:29:02,748 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-11-07 03:29:02,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:29:02,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2018-11-07 03:29:02,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:29:02,773 INFO L225 Difference]: With dead ends: 894 [2018-11-07 03:29:02,773 INFO L226 Difference]: Without dead ends: 633 [2018-11-07 03:29:02,782 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 [2018-11-07 03:29:02,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-11-07 03:29:02,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-11-07 03:29:02,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-11-07 03:29:02,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 962 transitions. [2018-11-07 03:29:02,884 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 962 transitions. Word has length 66 [2018-11-07 03:29:02,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:29:02,885 INFO L480 AbstractCegarLoop]: Abstraction has 633 states and 962 transitions. [2018-11-07 03:29:02,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:29:02,886 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 962 transitions. [2018-11-07 03:29:02,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-11-07 03:29:02,898 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:29:02,899 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:29:02,899 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:29:02,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:29:02,900 INFO L82 PathProgramCache]: Analyzing trace with hash 965459243, now seen corresponding path program 1 times [2018-11-07 03:29:02,900 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:29:02,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:29:02,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:29:02,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:29:02,902 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:29:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:29:03,312 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:29:03,312 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:29:03,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:29:03,313 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:29:03,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:29:03,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:29:03,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:29:03,316 INFO L87 Difference]: Start difference. First operand 633 states and 962 transitions. Second operand 4 states. [2018-11-07 03:29:06,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:29:06,683 INFO L93 Difference]: Finished difference Result 2358 states and 3743 transitions. [2018-11-07 03:29:06,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:29:06,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 179 [2018-11-07 03:29:06,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:29:06,703 INFO L225 Difference]: With dead ends: 2358 [2018-11-07 03:29:06,703 INFO L226 Difference]: Without dead ends: 1731 [2018-11-07 03:29:06,711 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:29:06,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-11-07 03:29:06,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-11-07 03:29:06,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-11-07 03:29:06,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2521 transitions. [2018-11-07 03:29:06,803 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2521 transitions. Word has length 179 [2018-11-07 03:29:06,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:29:06,805 INFO L480 AbstractCegarLoop]: Abstraction has 1731 states and 2521 transitions. [2018-11-07 03:29:06,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:29:06,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2521 transitions. [2018-11-07 03:29:06,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-11-07 03:29:06,815 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:29:06,816 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:29:06,816 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:29:06,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:29:06,817 INFO L82 PathProgramCache]: Analyzing trace with hash 747473196, now seen corresponding path program 1 times [2018-11-07 03:29:06,817 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:29:06,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:29:06,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:29:06,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:29:06,818 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:29:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:29:07,450 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:29:07,451 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:29:07,451 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:29:07,452 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 263 with the following transitions: [2018-11-07 03:29:07,454 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [662], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 03:29:07,555 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:29:07,556 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:29:10,123 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:29:10,125 INFO L272 AbstractInterpreter]: Visited 117 different actions 117 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 03:29:10,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:29:10,145 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:29:12,546 INFO L227 lantSequenceWeakener]: Weakened 254 states. On average, predicates are now at 78.21% of their original sizes. [2018-11-07 03:29:12,547 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:29:13,031 INFO L415 sIntCurrentIteration]: We unified 261 AI predicates to 261 [2018-11-07 03:29:13,031 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:29:13,035 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:29:13,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 03:29:13,036 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:29:13,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 03:29:13,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 03:29:13,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 03:29:13,038 INFO L87 Difference]: Start difference. First operand 1731 states and 2521 transitions. Second operand 7 states. [2018-11-07 03:29:15,452 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:29:46,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:29:46,063 INFO L93 Difference]: Finished difference Result 3641 states and 5276 transitions. [2018-11-07 03:29:46,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:29:46,063 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2018-11-07 03:29:46,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:29:46,075 INFO L225 Difference]: With dead ends: 3641 [2018-11-07 03:29:46,075 INFO L226 Difference]: Without dead ends: 1916 [2018-11-07 03:29:46,081 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 262 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:29:46,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2018-11-07 03:29:46,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1914. [2018-11-07 03:29:46,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2018-11-07 03:29:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2711 transitions. [2018-11-07 03:29:46,139 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2711 transitions. Word has length 262 [2018-11-07 03:29:46,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:29:46,139 INFO L480 AbstractCegarLoop]: Abstraction has 1914 states and 2711 transitions. [2018-11-07 03:29:46,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 03:29:46,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2711 transitions. [2018-11-07 03:29:46,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-11-07 03:29:46,149 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:29:46,150 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 03:29:46,150 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:29:46,150 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:29:46,151 INFO L82 PathProgramCache]: Analyzing trace with hash -178374725, now seen corresponding path program 1 times [2018-11-07 03:29:46,151 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:29:46,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:29:46,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:29:46,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:29:46,152 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:29:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:29:46,639 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 03:29:46,859 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 03:29:47,181 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-11-07 03:29:47,697 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 264 proven. 161 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 03:29:47,698 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:29:47,698 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:29:47,698 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 348 with the following transitions: [2018-11-07 03:29:47,699 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [662], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 03:29:47,705 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:29:47,706 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:29:51,596 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:29:51,597 INFO L272 AbstractInterpreter]: Visited 121 different actions 235 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 03:29:51,606 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:29:51,606 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:29:54,988 INFO L227 lantSequenceWeakener]: Weakened 130 states. On average, predicates are now at 78.11% of their original sizes. [2018-11-07 03:29:54,988 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:30:16,351 INFO L415 sIntCurrentIteration]: We unified 346 AI predicates to 346 [2018-11-07 03:30:16,352 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:30:16,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:30:16,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [12] total 28 [2018-11-07 03:30:16,352 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:30:16,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 03:30:16,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 03:30:16,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-11-07 03:30:16,354 INFO L87 Difference]: Start difference. First operand 1914 states and 2711 transitions. Second operand 18 states. [2018-11-07 03:31:22,014 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 03:32:55,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 03:32:55,209 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:32:55,216 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:32:55,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:32:55 BoogieIcfgContainer [2018-11-07 03:32:55,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:32:55,217 INFO L168 Benchmark]: Toolchain (without parser) took 241031.70 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-11-07 03:32:55,218 INFO L168 Benchmark]: CDTParser took 0.25 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. [2018-11-07 03:32:55,219 INFO L168 Benchmark]: CACSL2BoogieTranslator took 841.69 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 03:32:55,220 INFO L168 Benchmark]: Boogie Procedure Inliner took 137.91 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -806.6 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2018-11-07 03:32:55,221 INFO L168 Benchmark]: Boogie Preprocessor took 126.87 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:32:55,221 INFO L168 Benchmark]: RCFGBuilder took 3827.58 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 131.0 MB). Peak memory consumption was 131.0 MB. Max. memory is 7.1 GB. [2018-11-07 03:32:55,222 INFO L168 Benchmark]: TraceAbstraction took 236092.57 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -932.4 MB). Peak memory consumption was 945.0 MB. Max. memory is 7.1 GB. [2018-11-07 03:32:55,227 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 841.69 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 137.91 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -806.6 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.87 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3827.58 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 131.0 MB). Peak memory consumption was 131.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 236092.57 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -932.4 MB). Peak memory consumption was 945.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 181]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 181). Cancelled while BasicCegarLoop was constructing difference of abstraction (1914states) and FLOYD_HOARE automaton (currently 18 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (2775 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 236.0s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 198.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 681 SDtfs, 3568 SDslu, 730 SDs, 0 SdLazy, 5561 SolverSat, 911 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 78.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 625 GetRequests, 573 SyntacticMatches, 20 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 22.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1914occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.995973903493064 AbsIntWeakeningRatio, 0.09555189456342669 AbsIntAvgWeakeningVarsNumRemoved, 591.9225700164744 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 854 NumberOfCodeBlocks, 854 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 850 ConstructedInterpolants, 0 QuantifiedInterpolants, 1589707 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 528/691 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown