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-INT.epf -i ../../../trunk/examples/svcomp/loops/n.c40_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 15:29:03,130 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 15:29:03,135 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 15:29:03,149 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 15:29:03,149 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 15:29:03,150 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 15:29:03,152 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 15:29:03,153 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 15:29:03,155 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 15:29:03,156 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 15:29:03,157 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 15:29:03,157 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 15:29:03,158 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 15:29:03,159 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 15:29:03,160 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 15:29:03,161 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 15:29:03,162 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 15:29:03,163 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 15:29:03,165 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 15:29:03,167 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 15:29:03,168 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 15:29:03,169 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 15:29:03,172 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 15:29:03,172 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 15:29:03,172 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 15:29:03,173 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 15:29:03,176 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 15:29:03,177 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 15:29:03,178 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 15:29:03,179 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 15:29:03,179 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 15:29:03,180 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 15:29:03,186 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 15:29:03,217 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 15:29:03,217 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 15:29:03,218 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 15:29:03,218 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 15:29:03,218 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 15:29:03,218 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 15:29:03,219 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 15:29:03,219 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 15:29:03,219 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 15:29:03,219 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 15:29:03,219 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 15:29:03,219 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 15:29:03,220 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 15:29:03,220 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 15:29:03,220 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 15:29:03,221 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 15:29:03,221 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 15:29:03,221 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 15:29:03,221 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 15:29:03,224 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 15:29:03,224 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 15:29:03,224 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 15:29:03,224 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 15:29:03,225 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 15:29:03,225 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 15:29:03,225 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 15:29:03,225 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 15:29:03,225 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 15:29:03,226 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 15:29:03,226 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 15:29:03,226 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 15:29:03,226 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 15:29:03,226 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 15:29:03,227 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 15:29:03,284 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 15:29:03,297 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 15:29:03,301 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 15:29:03,303 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 15:29:03,303 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 15:29:03,304 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/n.c40_true-unreach-call_true-termination.i [2018-10-27 15:29:03,368 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/478917a9c/627810f2e03445b38854ff57447c5618/FLAG9dcff0e7f [2018-10-27 15:29:03,795 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 15:29:03,796 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c40_true-unreach-call_true-termination.i [2018-10-27 15:29:03,802 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/478917a9c/627810f2e03445b38854ff57447c5618/FLAG9dcff0e7f [2018-10-27 15:29:03,818 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/478917a9c/627810f2e03445b38854ff57447c5618 [2018-10-27 15:29:03,831 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 15:29:03,833 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 15:29:03,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 15:29:03,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 15:29:03,839 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 15:29:03,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:29:03" (1/1) ... [2018-10-27 15:29:03,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@639a6c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:29:03, skipping insertion in model container [2018-10-27 15:29:03,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:29:03" (1/1) ... [2018-10-27 15:29:03,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 15:29:03,883 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 15:29:04,107 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 15:29:04,132 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 15:29:04,148 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 15:29:04,203 INFO L193 MainTranslator]: Completed translation [2018-10-27 15:29:04,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:29:04 WrapperNode [2018-10-27 15:29:04,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 15:29:04,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 15:29:04,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 15:29:04,205 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 15:29:04,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:29:04" (1/1) ... [2018-10-27 15:29:04,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:29:04" (1/1) ... [2018-10-27 15:29:04,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 15:29:04,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 15:29:04,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 15:29:04,298 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 15:29:04,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:29:04" (1/1) ... [2018-10-27 15:29:04,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:29:04" (1/1) ... [2018-10-27 15:29:04,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:29:04" (1/1) ... [2018-10-27 15:29:04,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:29:04" (1/1) ... [2018-10-27 15:29:04,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:29:04" (1/1) ... [2018-10-27 15:29:04,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:29:04" (1/1) ... [2018-10-27 15:29:04,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:29:04" (1/1) ... [2018-10-27 15:29:04,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 15:29:04,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 15:29:04,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 15:29:04,374 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 15:29:04,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:29:04" (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 [2018-10-27 15:29:04,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 15:29:04,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 15:29:04,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 15:29:04,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 15:29:04,560 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 15:29:04,560 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 15:29:09,328 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 15:29:09,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:29:09 BoogieIcfgContainer [2018-10-27 15:29:09,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 15:29:09,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 15:29:09,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 15:29:09,334 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 15:29:09,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:29:03" (1/3) ... [2018-10-27 15:29:09,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50bdc6d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:29:09, skipping insertion in model container [2018-10-27 15:29:09,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:29:04" (2/3) ... [2018-10-27 15:29:09,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50bdc6d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:29:09, skipping insertion in model container [2018-10-27 15:29:09,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:29:09" (3/3) ... [2018-10-27 15:29:09,338 INFO L112 eAbstractionObserver]: Analyzing ICFG n.c40_true-unreach-call_true-termination.i [2018-10-27 15:29:09,350 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 15:29:09,358 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 15:29:09,394 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 15:29:09,439 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 15:29:09,439 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 15:29:09,439 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 15:29:09,439 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 15:29:09,439 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 15:29:09,440 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 15:29:09,440 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 15:29:09,440 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 15:29:09,455 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-10-27 15:29:09,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-27 15:29:09,460 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:29:09,461 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:29:09,463 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:29:09,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:29:09,469 INFO L82 PathProgramCache]: Analyzing trace with hash -692123559, now seen corresponding path program 1 times [2018-10-27 15:29:09,472 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:29:09,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:29:09,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:29:09,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:29:09,527 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:29:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:29:09,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:29:09,801 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:29:09,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 15:29:09,802 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:29:09,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-27 15:29:09,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-27 15:29:09,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 15:29:09,827 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-10-27 15:29:09,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:29:09,855 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2018-10-27 15:29:09,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 15:29:09,857 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-10-27 15:29:09,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:29:09,870 INFO L225 Difference]: With dead ends: 29 [2018-10-27 15:29:09,871 INFO L226 Difference]: Without dead ends: 14 [2018-10-27 15:29:09,874 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 15:29:09,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-27 15:29:09,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-27 15:29:09,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-27 15:29:09,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-27 15:29:09,917 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-10-27 15:29:09,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:29:09,918 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-27 15:29:09,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-27 15:29:09,918 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-27 15:29:09,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-27 15:29:09,920 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:29:09,920 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:29:09,920 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:29:09,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:29:09,921 INFO L82 PathProgramCache]: Analyzing trace with hash 925435379, now seen corresponding path program 1 times [2018-10-27 15:29:09,921 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:29:09,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:29:09,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:29:09,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:29:09,924 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:29:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:29:10,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:29:10,153 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:29:10,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 15:29:10,153 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:29:10,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 15:29:10,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 15:29:10,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 15:29:10,156 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 3 states. [2018-10-27 15:29:10,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:29:10,265 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-27 15:29:10,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 15:29:10,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-10-27 15:29:10,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:29:10,269 INFO L225 Difference]: With dead ends: 22 [2018-10-27 15:29:10,269 INFO L226 Difference]: Without dead ends: 17 [2018-10-27 15:29:10,270 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 15:29:10,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-27 15:29:10,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-27 15:29:10,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-27 15:29:10,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-27 15:29:10,274 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2018-10-27 15:29:10,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:29:10,275 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-27 15:29:10,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 15:29:10,275 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-27 15:29:10,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-27 15:29:10,276 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:29:10,276 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:29:10,276 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:29:10,276 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:29:10,277 INFO L82 PathProgramCache]: Analyzing trace with hash -2086497215, now seen corresponding path program 1 times [2018-10-27 15:29:10,277 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:29:10,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:29:10,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:29:10,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:29:10,278 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:29:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:29:10,801 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 16 [2018-10-27 15:29:10,948 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 18 [2018-10-27 15:29:10,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:29:10,983 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:29:10,983 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:29:10,984 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-10-27 15:29:10,986 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [11], [14], [16], [20], [23], [26], [28], [38], [39], [40] [2018-10-27 15:29:11,027 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 15:29:11,027 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 15:29:12,009 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 15:29:12,011 INFO L272 AbstractInterpreter]: Visited 14 different actions 444 times. Merged at 8 different actions 429 times. Widened at 1 different actions 50 times. Found 1 fixpoints after 1 different actions. Largest state had 38 variables. [2018-10-27 15:29:12,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:29:12,029 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 15:29:12,029 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:29:12,029 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 15:29:12,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:29:12,042 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 15:29:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:29:12,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 15:29:12,526 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2018-10-27 15:29:12,546 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-10-27 15:29:12,548 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 15:29:12,622 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-27 15:29:12,750 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-10-27 15:29:12,753 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-27 15:29:12,754 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:12,770 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:12,780 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:12,781 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:27, output treesize:12 [2018-10-27 15:29:12,857 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2018-10-27 15:29:13,047 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 27 [2018-10-27 15:29:13,049 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-10-27 15:29:13,244 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-27 15:29:13,343 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-27 15:29:13,343 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:22 [2018-10-27 15:29:13,605 WARN L179 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 14 [2018-10-27 15:29:13,628 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2018-10-27 15:29:13,654 INFO L682 Elim1Store]: detected equality via solver [2018-10-27 15:29:13,655 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2018-10-27 15:29:13,656 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:13,721 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:13,737 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:13,738 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:41, output treesize:4 [2018-10-27 15:29:13,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:29:13,795 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 15:29:13,970 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2018-10-27 15:29:14,164 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-10-27 15:29:14,182 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 3 [2018-10-27 15:29:14,183 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:14,310 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-27 15:29:14,428 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-27 15:29:14,428 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:32, output treesize:28 [2018-10-27 15:29:14,660 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 18 [2018-10-27 15:29:14,679 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2018-10-27 15:29:14,697 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2018-10-27 15:29:14,697 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-27 15:29:14,712 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:14,714 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-27 15:29:14,714 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:13, output treesize:3 [2018-10-27 15:29:14,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:29:14,763 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 15:29:14,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 14 [2018-10-27 15:29:14,763 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 15:29:14,764 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-27 15:29:14,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-27 15:29:14,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2018-10-27 15:29:14,765 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 12 states. [2018-10-27 15:29:15,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:29:15,724 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-27 15:29:15,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 15:29:15,725 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2018-10-27 15:29:15,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:29:15,725 INFO L225 Difference]: With dead ends: 17 [2018-10-27 15:29:15,725 INFO L226 Difference]: Without dead ends: 0 [2018-10-27 15:29:15,726 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2018-10-27 15:29:15,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-27 15:29:15,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-27 15:29:15,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-27 15:29:15,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-27 15:29:15,727 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2018-10-27 15:29:15,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:29:15,727 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 15:29:15,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-27 15:29:15,727 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-27 15:29:15,727 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-27 15:29:15,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-27 15:29:16,081 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2018-10-27 15:29:16,085 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-10-27 15:29:16,085 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-10-27 15:29:16,086 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-27 15:29:16,086 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-27 15:29:16,086 INFO L421 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (not (= |~#x~0.base| |~#y~0.base|)) (= ~i~0 0) (<= 0 |~#x~0.offset|) (<= |~#x~0.offset| 0) (= 0 (select (select |#memory_int| |~#x~0.base|) |~#x~0.offset|))) [2018-10-27 15:29:16,086 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-27 15:29:16,086 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-27 15:29:16,086 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 8 23) no Hoare annotation was computed. [2018-10-27 15:29:16,087 INFO L425 ceAbstractionStarter]: For program point L19(lines 19 20) no Hoare annotation was computed. [2018-10-27 15:29:16,087 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 8 23) no Hoare annotation was computed. [2018-10-27 15:29:16,087 INFO L421 ceAbstractionStarter]: At program point mainENTRY(lines 8 23) the Hoare annotation is: (or (< 0 |~#x~0.offset|) (not (= 0 |old(~i~0)|)) (not (= 0 (select (select |old(#memory_int)| |~#x~0.base|) |~#x~0.offset|))) (= |~#y~0.base| |~#x~0.base|) (< |~#x~0.offset| 0) (and (= ~i~0 0) (= 0 (select (select |#memory_int| |~#x~0.base|) |~#x~0.offset|)))) [2018-10-27 15:29:16,087 INFO L425 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-10-27 15:29:16,087 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2018-10-27 15:29:16,087 INFO L425 ceAbstractionStarter]: For program point L18(lines 18 20) no Hoare annotation was computed. [2018-10-27 15:29:16,087 INFO L425 ceAbstractionStarter]: For program point L18-1(lines 18 20) no Hoare annotation was computed. [2018-10-27 15:29:16,088 INFO L425 ceAbstractionStarter]: For program point L12-1(lines 12 15) no Hoare annotation was computed. [2018-10-27 15:29:16,088 INFO L425 ceAbstractionStarter]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2018-10-27 15:29:16,088 INFO L421 ceAbstractionStarter]: At program point L12-4(lines 12 15) the Hoare annotation is: (or (< 0 |~#x~0.offset|) (not (= 0 |old(~i~0)|)) (not (= 0 (select (select |old(#memory_int)| |~#x~0.base|) |~#x~0.offset|))) (= |~#y~0.base| |~#x~0.base|) (< |~#x~0.offset| 0) (and (= ~i~0 0) (= 0 (select (select |#memory_int| |~#x~0.base|) |~#x~0.offset|)))) [2018-10-27 15:29:16,088 INFO L425 ceAbstractionStarter]: For program point L12-5(lines 12 15) no Hoare annotation was computed. [2018-10-27 15:29:16,095 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-27 15:29:16,096 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-27 15:29:16,103 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-27 15:29:16,104 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-27 15:29:16,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:29:16 BoogieIcfgContainer [2018-10-27 15:29:16,106 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 15:29:16,107 INFO L168 Benchmark]: Toolchain (without parser) took 12275.35 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 883.9 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -394.7 MB). Peak memory consumption was 489.2 MB. Max. memory is 7.1 GB. [2018-10-27 15:29:16,108 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. [2018-10-27 15:29:16,109 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.76 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-27 15:29:16,110 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.89 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-27 15:29:16,110 INFO L168 Benchmark]: Boogie Preprocessor took 75.81 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. [2018-10-27 15:29:16,111 INFO L168 Benchmark]: RCFGBuilder took 4955.21 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 883.9 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -743.4 MB). Peak memory consumption was 590.5 MB. Max. memory is 7.1 GB. [2018-10-27 15:29:16,112 INFO L168 Benchmark]: TraceAbstraction took 6776.21 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 327.5 MB). Peak memory consumption was 327.5 MB. Max. memory is 7.1 GB. [2018-10-27 15:29:16,116 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 370.76 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 92.89 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 75.81 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4955.21 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 883.9 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -743.4 MB). Peak memory consumption was 590.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6776.21 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 327.5 MB). Peak memory consumption was 327.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant [2018-10-27 15:29:16,124 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-27 15:29:16,124 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-27 15:29:16,126 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-27 15:29:16,126 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((0 < x || !(0 == \old(i))) || !(0 == \old(unknown-#memory_int-unknown)[x][x])) || y == x) || x < 0) || (i == 0 && 0 == unknown-#memory_int-unknown[x][x]) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. SAFE Result, 6.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 38 SDtfs, 13 SDslu, 21 SDs, 0 SdLazy, 18 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.0s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 6 NumberOfFragments, 93 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 20 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 67 ConstructedInterpolants, 5 QuantifiedInterpolants, 6379 SizeOfPredicates, 29 NumberOfNonLiveVariables, 174 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/9 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...