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/loops/for_infinite_loop_1_true-unreach-call_false-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8c3fbe1 [2018-10-22 15:55:58,159 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 15:55:58,163 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 15:55:58,178 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 15:55:58,179 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 15:55:58,181 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 15:55:58,182 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 15:55:58,184 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 15:55:58,188 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 15:55:58,197 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 15:55:58,198 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 15:55:58,198 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 15:55:58,199 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 15:55:58,202 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 15:55:58,203 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 15:55:58,205 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 15:55:58,206 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 15:55:58,210 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 15:55:58,212 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 15:55:58,216 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 15:55:58,217 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 15:55:58,220 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 15:55:58,223 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-22 15:55:58,224 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-22 15:55:58,224 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-22 15:55:58,227 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-22 15:55:58,228 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-22 15:55:58,229 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-22 15:55:58,230 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-22 15:55:58,233 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-22 15:55:58,233 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-22 15:55:58,234 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-22 15:55:58,238 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 [2018-10-22 15:55:58,260 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 15:55:58,260 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 15:55:58,261 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 15:55:58,261 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-22 15:55:58,261 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-22 15:55:58,261 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-22 15:55:58,262 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-22 15:55:58,262 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-22 15:55:58,262 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-22 15:55:58,262 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-22 15:55:58,262 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-22 15:55:58,263 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-22 15:55:58,263 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 15:55:58,264 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 15:55:58,264 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 15:55:58,264 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 15:55:58,264 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 15:55:58,264 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 15:55:58,265 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 15:55:58,265 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 15:55:58,265 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 15:55:58,265 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 15:55:58,266 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 15:55:58,266 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 15:55:58,266 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 15:55:58,266 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 15:55:58,266 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 15:55:58,267 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 15:55:58,267 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-22 15:55:58,267 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 15:55:58,267 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 15:55:58,267 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 15:55:58,267 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-22 15:55:58,268 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-22 15:55:58,326 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 15:55:58,341 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 15:55:58,346 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 15:55:58,347 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 15:55:58,348 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 15:55:58,349 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/for_infinite_loop_1_true-unreach-call_false-termination.i [2018-10-22 15:55:58,431 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/712ef22d5/21bedcb37bbc427f951f2458100469f9/FLAG47508f1b0 [2018-10-22 15:55:58,893 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 15:55:58,894 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/for_infinite_loop_1_true-unreach-call_false-termination.i [2018-10-22 15:55:58,901 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/712ef22d5/21bedcb37bbc427f951f2458100469f9/FLAG47508f1b0 [2018-10-22 15:55:58,917 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/712ef22d5/21bedcb37bbc427f951f2458100469f9 [2018-10-22 15:55:58,928 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 15:55:58,930 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-22 15:55:58,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 15:55:58,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 15:55:58,935 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 15:55:58,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:55:58" (1/1) ... [2018-10-22 15:55:58,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1901a9a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:55:58, skipping insertion in model container [2018-10-22 15:55:58,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:55:58" (1/1) ... [2018-10-22 15:55:58,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 15:55:58,971 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 15:55:59,158 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:55:59,162 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 15:55:59,180 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:55:59,197 INFO L193 MainTranslator]: Completed translation [2018-10-22 15:55:59,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:55:59 WrapperNode [2018-10-22 15:55:59,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 15:55:59,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 15:55:59,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 15:55:59,200 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 15:55:59,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:55:59" (1/1) ... [2018-10-22 15:55:59,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:55:59" (1/1) ... [2018-10-22 15:55:59,223 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 15:55:59,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 15:55:59,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 15:55:59,224 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 15:55:59,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:55:59" (1/1) ... [2018-10-22 15:55:59,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:55:59" (1/1) ... [2018-10-22 15:55:59,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:55:59" (1/1) ... [2018-10-22 15:55:59,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:55:59" (1/1) ... [2018-10-22 15:55:59,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:55:59" (1/1) ... [2018-10-22 15:55:59,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:55:59" (1/1) ... [2018-10-22 15:55:59,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:55:59" (1/1) ... [2018-10-22 15:55:59,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 15:55:59,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 15:55:59,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 15:55:59,249 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 15:55:59,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:55:59" (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 [2018-10-22 15:55:59,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-22 15:55:59,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-22 15:55:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 15:55:59,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 15:55:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-22 15:55:59,441 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-22 15:55:59,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-22 15:55:59,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-22 15:55:59,668 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 15:55:59,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:55:59 BoogieIcfgContainer [2018-10-22 15:55:59,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 15:55:59,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 15:55:59,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 15:55:59,673 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 15:55:59,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 03:55:58" (1/3) ... [2018-10-22 15:55:59,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5e566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:55:59, skipping insertion in model container [2018-10-22 15:55:59,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:55:59" (2/3) ... [2018-10-22 15:55:59,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5e566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:55:59, skipping insertion in model container [2018-10-22 15:55:59,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:55:59" (3/3) ... [2018-10-22 15:55:59,677 INFO L112 eAbstractionObserver]: Analyzing ICFG for_infinite_loop_1_true-unreach-call_false-termination.i [2018-10-22 15:55:59,688 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 15:55:59,696 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 15:55:59,714 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 15:55:59,749 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 15:55:59,750 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 15:55:59,750 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 15:55:59,750 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 15:55:59,750 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 15:55:59,750 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 15:55:59,751 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 15:55:59,751 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 15:55:59,751 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 15:55:59,770 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-10-22 15:55:59,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-22 15:55:59,777 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:55:59,778 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:55:59,780 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:55:59,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:55:59,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1153397670, now seen corresponding path program 1 times [2018-10-22 15:55:59,789 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 15:55:59,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:55:59,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:55:59,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:55:59,842 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 15:55:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:55:59,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:55:59,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:55:59,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-22 15:55:59,924 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 15:55:59,929 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-22 15:55:59,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-22 15:55:59,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 15:55:59,949 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2018-10-22 15:55:59,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:55:59,972 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2018-10-22 15:55:59,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-22 15:55:59,974 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-10-22 15:55:59,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:55:59,983 INFO L225 Difference]: With dead ends: 35 [2018-10-22 15:55:59,984 INFO L226 Difference]: Without dead ends: 16 [2018-10-22 15:55:59,987 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 [2018-10-22 15:56:00,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-22 15:56:00,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-22 15:56:00,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-22 15:56:00,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-22 15:56:00,026 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2018-10-22 15:56:00,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:56:00,026 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-22 15:56:00,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-22 15:56:00,027 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-22 15:56:00,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-22 15:56:00,028 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:56:00,028 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:56:00,028 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:56:00,029 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:56:00,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1085730297, now seen corresponding path program 1 times [2018-10-22 15:56:00,029 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 15:56:00,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:56:00,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:56:00,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:56:00,031 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 15:56:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:56:00,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:56:00,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:56:00,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-22 15:56:00,243 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 15:56:00,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-22 15:56:00,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-22 15:56:00,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-22 15:56:00,246 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2018-10-22 15:56:00,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:56:00,347 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-22 15:56:00,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-22 15:56:00,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-10-22 15:56:00,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:56:00,350 INFO L225 Difference]: With dead ends: 16 [2018-10-22 15:56:00,350 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 15:56:00,352 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-22 15:56:00,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 15:56:00,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 15:56:00,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 15:56:00,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 15:56:00,353 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2018-10-22 15:56:00,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:56:00,354 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 15:56:00,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-22 15:56:00,354 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 15:56:00,354 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 15:56:00,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 15:56:00,406 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-22 15:56:00,406 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-22 15:56:00,406 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 15:56:00,407 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-22 15:56:00,407 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-22 15:56:00,407 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 15:56:00,407 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 20) the Hoare annotation is: true [2018-10-22 15:56:00,407 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 20) no Hoare annotation was computed. [2018-10-22 15:56:00,408 INFO L421 ceAbstractionStarter]: At program point L17(line 17) the Hoare annotation is: (= main_~x~0 0) [2018-10-22 15:56:00,408 INFO L425 ceAbstractionStarter]: For program point L17-1(lines 15 18) no Hoare annotation was computed. [2018-10-22 15:56:00,408 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-10-22 15:56:00,408 INFO L425 ceAbstractionStarter]: For program point L15-1(lines 15 18) no Hoare annotation was computed. [2018-10-22 15:56:00,408 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 20) no Hoare annotation was computed. [2018-10-22 15:56:00,410 INFO L421 ceAbstractionStarter]: At program point L15-3(lines 15 18) the Hoare annotation is: (= main_~x~0 0) [2018-10-22 15:56:00,410 INFO L421 ceAbstractionStarter]: At program point L15-4(lines 15 18) the Hoare annotation is: false [2018-10-22 15:56:00,410 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-22 15:56:00,410 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-22 15:56:00,410 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-22 15:56:00,411 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-22 15:56:00,411 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-22 15:56:00,411 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-22 15:56:00,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 03:56:00 BoogieIcfgContainer [2018-10-22 15:56:00,424 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 15:56:00,425 INFO L168 Benchmark]: Toolchain (without parser) took 1495.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 789.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -798.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-22 15:56:00,427 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-10-22 15:56:00,428 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.48 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. [2018-10-22 15:56:00,429 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.12 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. [2018-10-22 15:56:00,430 INFO L168 Benchmark]: Boogie Preprocessor took 24.79 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. [2018-10-22 15:56:00,430 INFO L168 Benchmark]: RCFGBuilder took 420.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 789.1 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -840.0 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2018-10-22 15:56:00,432 INFO L168 Benchmark]: TraceAbstraction took 754.11 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 31.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-10-22 15:56:00,437 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 267.48 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 24.12 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. * Boogie Preprocessor took 24.79 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 420.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 789.1 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -840.0 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 754.11 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 31.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 15]: Loop Invariant Derived loop invariant: x == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 31 SDtfs, 6 SDslu, 25 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 10 PreInvPairs, 12 NumberOfFragments, 12 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 353 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...