java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-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/Problem11_label33_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:11:55,274 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:11:55,276 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:11:55,288 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:11:55,288 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:11:55,289 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:11:55,291 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:11:55,292 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:11:55,294 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:11:55,295 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:11:55,296 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:11:55,296 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:11:55,297 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:11:55,298 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:11:55,299 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:11:55,300 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:11:55,300 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:11:55,304 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:11:55,306 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:11:55,312 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:11:55,313 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:11:55,314 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:11:55,317 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:11:55,317 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:11:55,317 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:11:55,318 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:11:55,319 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:11:55,320 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:11:55,321 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:11:55,322 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:11:55,322 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:11:55,323 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:11:55,323 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:11:55,323 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:11:55,324 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:11:55,325 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:11:55,325 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:11:55,341 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:11:55,341 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:11:55,342 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:11:55,342 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:11:55,343 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:11:55,343 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:11:55,343 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:11:55,343 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:11:55,343 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:11:55,344 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:11:55,344 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:11:55,344 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:11:55,345 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:11:55,345 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:11:55,345 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:11:55,346 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:11:55,346 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:11:55,346 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:11:55,346 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:11:55,346 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:11:55,347 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:11:55,347 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:11:55,347 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:11:55,347 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:11:55,347 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:11:55,348 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:11:55,348 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:11:55,348 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:11:55,348 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:11:55,348 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:11:55,349 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:11:55,349 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:11:55,349 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:11:55,349 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:11:55,398 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:11:55,412 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:11:55,415 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:11:55,417 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:11:55,418 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:11:55,418 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label33_true-unreach-call.c [2018-10-24 21:11:55,486 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/00cd9998b/b474ca8ce9f24cd78c81e506a646fdab/FLAG47001a588 [2018-10-24 21:11:56,070 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:11:56,071 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label33_true-unreach-call.c [2018-10-24 21:11:56,108 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/00cd9998b/b474ca8ce9f24cd78c81e506a646fdab/FLAG47001a588 [2018-10-24 21:11:56,137 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/00cd9998b/b474ca8ce9f24cd78c81e506a646fdab [2018-10-24 21:11:56,150 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:11:56,153 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:11:56,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:11:56,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:11:56,158 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:11:56,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:11:56" (1/1) ... [2018-10-24 21:11:56,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@684849ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:11:56, skipping insertion in model container [2018-10-24 21:11:56,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:11:56" (1/1) ... [2018-10-24 21:11:56,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:11:56,241 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:11:56,837 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:11:56,842 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:11:57,012 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:11:57,031 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:11:57,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:11:57 WrapperNode [2018-10-24 21:11:57,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:11:57,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:11:57,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:11:57,033 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:11:57,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:11:57" (1/1) ... [2018-10-24 21:11:57,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:11:57" (1/1) ... [2018-10-24 21:11:57,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:11:57,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:11:57,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:11:57,335 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:11:57,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:11:57" (1/1) ... [2018-10-24 21:11:57,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:11:57" (1/1) ... [2018-10-24 21:11:57,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:11:57" (1/1) ... [2018-10-24 21:11:57,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:11:57" (1/1) ... [2018-10-24 21:11:57,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:11:57" (1/1) ... [2018-10-24 21:11:57,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:11:57" (1/1) ... [2018-10-24 21:11:57,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:11:57" (1/1) ... [2018-10-24 21:11:57,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:11:57,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:11:57,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:11:57,456 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:11:57,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:11:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 21:11:57,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:11:57,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:11:57,528 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:11:57,528 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:11:57,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:11:57,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:11:57,528 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:11:57,529 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:12:02,208 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:12:02,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:12:02 BoogieIcfgContainer [2018-10-24 21:12:02,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:12:02,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:12:02,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:12:02,220 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:12:02,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:11:56" (1/3) ... [2018-10-24 21:12:02,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c391ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:12:02, skipping insertion in model container [2018-10-24 21:12:02,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:11:57" (2/3) ... [2018-10-24 21:12:02,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c391ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:12:02, skipping insertion in model container [2018-10-24 21:12:02,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:12:02" (3/3) ... [2018-10-24 21:12:02,225 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label33_true-unreach-call.c [2018-10-24 21:12:02,234 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:12:02,242 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:12:02,260 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:12:02,300 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:12:02,300 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:12:02,301 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:12:02,301 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:12:02,301 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:12:02,301 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:12:02,302 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:12:02,302 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:12:02,332 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-24 21:12:02,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-24 21:12:02,340 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:12:02,341 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] [2018-10-24 21:12:02,344 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:12:02,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:12:02,350 INFO L82 PathProgramCache]: Analyzing trace with hash 303379937, now seen corresponding path program 1 times [2018-10-24 21:12:02,352 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:12:02,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:12:02,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:12:02,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:12:02,404 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:12:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:12:02,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:12:02,911 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:12:02,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:12:02,912 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:12:02,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:12:02,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:12:02,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:12:02,940 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-24 21:12:06,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:12:06,473 INFO L93 Difference]: Finished difference Result 1001 states and 1780 transitions. [2018-10-24 21:12:06,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:12:06,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-10-24 21:12:06,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:12:06,497 INFO L225 Difference]: With dead ends: 1001 [2018-10-24 21:12:06,497 INFO L226 Difference]: Without dead ends: 702 [2018-10-24 21:12:06,507 INFO L605 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 [2018-10-24 21:12:06,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2018-10-24 21:12:06,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 699. [2018-10-24 21:12:06,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2018-10-24 21:12:06,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1082 transitions. [2018-10-24 21:12:06,610 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1082 transitions. Word has length 35 [2018-10-24 21:12:06,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:12:06,611 INFO L481 AbstractCegarLoop]: Abstraction has 699 states and 1082 transitions. [2018-10-24 21:12:06,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:12:06,612 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1082 transitions. [2018-10-24 21:12:06,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-24 21:12:06,621 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:12:06,621 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:12:06,626 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:12:06,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:12:06,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1558950259, now seen corresponding path program 1 times [2018-10-24 21:12:06,627 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:12:06,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:12:06,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:12:06,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:12:06,629 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:12:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:12:06,982 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:12:07,113 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:12:07,114 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:12:07,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:12:07,114 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:12:07,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:12:07,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:12:07,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:12:07,117 INFO L87 Difference]: Start difference. First operand 699 states and 1082 transitions. Second operand 6 states. [2018-10-24 21:12:11,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:12:11,758 INFO L93 Difference]: Finished difference Result 2534 states and 4100 transitions. [2018-10-24 21:12:11,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:12:11,761 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2018-10-24 21:12:11,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:12:11,775 INFO L225 Difference]: With dead ends: 2534 [2018-10-24 21:12:11,776 INFO L226 Difference]: Without dead ends: 1841 [2018-10-24 21:12:11,783 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:12:11,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2018-10-24 21:12:11,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1815. [2018-10-24 21:12:11,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1815 states. [2018-10-24 21:12:11,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2683 transitions. [2018-10-24 21:12:11,874 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2683 transitions. Word has length 108 [2018-10-24 21:12:11,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:12:11,874 INFO L481 AbstractCegarLoop]: Abstraction has 1815 states and 2683 transitions. [2018-10-24 21:12:11,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:12:11,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2683 transitions. [2018-10-24 21:12:11,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-24 21:12:11,893 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:12:11,893 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:12:11,893 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:12:11,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:12:11,894 INFO L82 PathProgramCache]: Analyzing trace with hash 620005359, now seen corresponding path program 1 times [2018-10-24 21:12:11,895 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:12:11,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:12:11,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:12:11,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:12:11,896 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:12:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:12:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-24 21:12:12,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:12:12,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:12:12,252 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:12:12,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:12:12,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:12:12,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:12:12,254 INFO L87 Difference]: Start difference. First operand 1815 states and 2683 transitions. Second operand 4 states. [2018-10-24 21:12:15,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:12:15,081 INFO L93 Difference]: Finished difference Result 4744 states and 7405 transitions. [2018-10-24 21:12:15,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:12:15,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 211 [2018-10-24 21:12:15,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:12:15,102 INFO L225 Difference]: With dead ends: 4744 [2018-10-24 21:12:15,102 INFO L226 Difference]: Without dead ends: 2935 [2018-10-24 21:12:15,115 INFO L605 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 [2018-10-24 21:12:15,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2018-10-24 21:12:15,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 2922. [2018-10-24 21:12:15,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2922 states. [2018-10-24 21:12:15,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 4045 transitions. [2018-10-24 21:12:15,203 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 4045 transitions. Word has length 211 [2018-10-24 21:12:15,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:12:15,204 INFO L481 AbstractCegarLoop]: Abstraction has 2922 states and 4045 transitions. [2018-10-24 21:12:15,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:12:15,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 4045 transitions. [2018-10-24 21:12:15,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-24 21:12:15,211 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:12:15,212 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:12:15,212 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:12:15,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:12:15,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1339838587, now seen corresponding path program 1 times [2018-10-24 21:12:15,213 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:12:15,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:12:15,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:12:15,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:12:15,214 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:12:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:12:15,502 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:12:15,503 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:12:15,503 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:12:15,504 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 218 with the following transitions: [2018-10-24 21:12:15,506 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], [181], [183], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [653], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:12:15,579 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:12:15,580 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:12:17,502 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:12:20,284 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:12:20,286 INFO L272 AbstractInterpreter]: Visited 113 different actions 113 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-24 21:12:20,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:12:20,330 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:12:23,157 INFO L232 lantSequenceWeakener]: Weakened 209 states. On average, predicates are now at 73.38% of their original sizes. [2018-10-24 21:12:23,158 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:12:23,706 INFO L413 sIntCurrentIteration]: We have 216 unified AI predicates [2018-10-24 21:12:23,707 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:12:23,708 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:12:23,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 21:12:23,708 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:12:23,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:12:23,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:12:23,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:12:23,710 INFO L87 Difference]: Start difference. First operand 2922 states and 4045 transitions. Second operand 7 states. [2018-10-24 21:13:12,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:13:12,272 INFO L93 Difference]: Finished difference Result 6030 states and 8343 transitions. [2018-10-24 21:13:12,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:13:12,273 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2018-10-24 21:13:12,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:13:12,290 INFO L225 Difference]: With dead ends: 6030 [2018-10-24 21:13:12,290 INFO L226 Difference]: Without dead ends: 3114 [2018-10-24 21:13:12,300 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 217 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:13:12,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3114 states. [2018-10-24 21:13:12,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3114 to 3112. [2018-10-24 21:13:12,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3112 states. [2018-10-24 21:13:12,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3112 states to 3112 states and 4245 transitions. [2018-10-24 21:13:12,392 INFO L78 Accepts]: Start accepts. Automaton has 3112 states and 4245 transitions. Word has length 217 [2018-10-24 21:13:12,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:13:12,393 INFO L481 AbstractCegarLoop]: Abstraction has 3112 states and 4245 transitions. [2018-10-24 21:13:12,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:13:12,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3112 states and 4245 transitions. [2018-10-24 21:13:12,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-24 21:13:12,401 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:13:12,401 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:13:12,401 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:13:12,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:13:12,402 INFO L82 PathProgramCache]: Analyzing trace with hash 512910636, now seen corresponding path program 1 times [2018-10-24 21:13:12,402 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:13:12,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:13:12,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:13:12,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:13:12,404 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:13:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:13:12,661 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:13:12,662 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:13:12,662 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:13:12,662 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 271 with the following transitions: [2018-10-24 21:13:12,663 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], [181], [183], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [653], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:13:12,670 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:13:12,670 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:13:15,939 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:13:30,116 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:13:30,117 INFO L272 AbstractInterpreter]: Visited 135 different actions 393 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 21:13:30,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:13:30,124 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:13:33,226 INFO L232 lantSequenceWeakener]: Weakened 51 states. On average, predicates are now at 75.53% of their original sizes. [2018-10-24 21:13:33,227 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:14:14,219 INFO L413 sIntCurrentIteration]: We have 269 unified AI predicates [2018-10-24 21:14:14,220 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:14:14,220 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:14:14,220 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-10-24 21:14:14,220 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:14:14,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-24 21:14:14,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-24 21:14:14,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2018-10-24 21:14:14,222 INFO L87 Difference]: Start difference. First operand 3112 states and 4245 transitions. Second operand 22 states. Received shutdown request... [2018-10-24 21:15:58,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-24 21:15:58,715 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:15:58,721 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:15:58,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:15:58 BoogieIcfgContainer [2018-10-24 21:15:58,722 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:15:58,723 INFO L168 Benchmark]: Toolchain (without parser) took 242571.14 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.8 GB in the end (delta: -2.4 GB). Peak memory consumption was 266.6 MB. Max. memory is 7.1 GB. [2018-10-24 21:15:58,724 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:15:58,724 INFO L168 Benchmark]: CACSL2BoogieTranslator took 878.45 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:15:58,725 INFO L168 Benchmark]: Boogie Procedure Inliner took 301.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -838.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:15:58,726 INFO L168 Benchmark]: Boogie Preprocessor took 121.34 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:15:58,727 INFO L168 Benchmark]: RCFGBuilder took 4753.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 173.3 MB). Peak memory consumption was 173.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:15:58,728 INFO L168 Benchmark]: TraceAbstraction took 236507.68 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.8 GB in the end (delta: -1.8 GB). Peak memory consumption was 110.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:15:58,734 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 878.45 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 301.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -838.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.34 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4753.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 173.3 MB). Peak memory consumption was 173.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 236507.68 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.8 GB in the end (delta: -1.8 GB). Peak memory consumption was 110.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 90). Cancelled while BasicCegarLoop was constructing difference of abstraction (3112states) and FLOYD_HOARE automaton (currently 20 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (760 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 236.4s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 164.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1290 SDtfs, 3472 SDslu, 1164 SDs, 0 SdLazy, 6660 SolverSat, 1278 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 517 GetRequests, 442 SyntacticMatches, 28 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 47.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3112occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 22.2s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9958435607920149 AbsIntWeakeningRatio, 0.1154639175257732 AbsIntAvgWeakeningVarsNumRemoved, 1033.5814432989691 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 44 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 841 NumberOfCodeBlocks, 841 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 836 ConstructedInterpolants, 0 QuantifiedInterpolants, 538798 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 448/452 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown