java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008_true-unreach-call_true-termination.c.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 20:41:33,193 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 20:41:33,195 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 20:41:33,207 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 20:41:33,207 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 20:41:33,208 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 20:41:33,210 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 20:41:33,212 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 20:41:33,214 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 20:41:33,215 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 20:41:33,216 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 20:41:33,216 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 20:41:33,217 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 20:41:33,219 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 20:41:33,220 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 20:41:33,221 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 20:41:33,222 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 20:41:33,224 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 20:41:33,226 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 20:41:33,228 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 20:41:33,230 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 20:41:33,231 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 20:41:33,234 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 20:41:33,234 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 20:41:33,235 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 20:41:33,236 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 20:41:33,237 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 20:41:33,238 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 20:41:33,239 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 20:41:33,242 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 20:41:33,243 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 20:41:33,244 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-12 20:41:33,246 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 20:41:33,263 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 20:41:33,263 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 20:41:33,264 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 20:41:33,264 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 20:41:33,264 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 20:41:33,265 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 20:41:33,265 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 20:41:33,265 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 20:41:33,265 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 20:41:33,266 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 20:41:33,266 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 20:41:33,266 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 20:41:33,266 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 20:41:33,267 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 20:41:33,267 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 20:41:33,268 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 20:41:33,268 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 20:41:33,268 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 20:41:33,268 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 20:41:33,268 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 20:41:33,269 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 20:41:33,269 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 20:41:33,269 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 20:41:33,269 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 20:41:33,270 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 20:41:33,270 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 20:41:33,270 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 20:41:33,270 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 20:41:33,270 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 20:41:33,271 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 20:41:33,271 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 20:41:33,271 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 20:41:33,271 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 20:41:33,271 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 20:41:33,272 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 20:41:33,318 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 20:41:33,333 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 20:41:33,338 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 20:41:33,339 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 20:41:33,340 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 20:41:33,340 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008_true-unreach-call_true-termination.c.i [2018-11-12 20:41:33,408 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf66f01b3/258ee6c53b7a41e9930520f48ff2c2b2/FLAG6353010a9 [2018-11-12 20:41:33,872 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 20:41:33,873 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008_true-unreach-call_true-termination.c.i [2018-11-12 20:41:33,881 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf66f01b3/258ee6c53b7a41e9930520f48ff2c2b2/FLAG6353010a9 [2018-11-12 20:41:33,901 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf66f01b3/258ee6c53b7a41e9930520f48ff2c2b2 [2018-11-12 20:41:33,912 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 20:41:33,913 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 20:41:33,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 20:41:33,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 20:41:33,919 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 20:41:33,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:41:33" (1/1) ... [2018-11-12 20:41:33,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21ebbb0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:33, skipping insertion in model container [2018-11-12 20:41:33,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:41:33" (1/1) ... [2018-11-12 20:41:33,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 20:41:33,961 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 20:41:34,201 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 20:41:34,205 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 20:41:34,222 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 20:41:34,237 INFO L193 MainTranslator]: Completed translation [2018-11-12 20:41:34,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:34 WrapperNode [2018-11-12 20:41:34,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 20:41:34,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 20:41:34,239 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 20:41:34,239 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 20:41:34,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:34" (1/1) ... [2018-11-12 20:41:34,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:34" (1/1) ... [2018-11-12 20:41:34,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 20:41:34,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 20:41:34,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 20:41:34,258 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 20:41:34,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:34" (1/1) ... [2018-11-12 20:41:34,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:34" (1/1) ... [2018-11-12 20:41:34,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:34" (1/1) ... [2018-11-12 20:41:34,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:34" (1/1) ... [2018-11-12 20:41:34,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:34" (1/1) ... [2018-11-12 20:41:34,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:34" (1/1) ... [2018-11-12 20:41:34,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:34" (1/1) ... [2018-11-12 20:41:34,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 20:41:34,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 20:41:34,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 20:41:34,280 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 20:41:34,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 20:41:34,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 20:41:34,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 20:41:34,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 20:41:34,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 20:41:34,421 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 20:41:34,421 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 20:41:34,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-12 20:41:34,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-12 20:41:34,611 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 20:41:34,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:41:34 BoogieIcfgContainer [2018-11-12 20:41:34,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 20:41:34,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 20:41:34,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 20:41:34,617 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 20:41:34,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:41:33" (1/3) ... [2018-11-12 20:41:34,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7172ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:41:34, skipping insertion in model container [2018-11-12 20:41:34,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:34" (2/3) ... [2018-11-12 20:41:34,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7172ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:41:34, skipping insertion in model container [2018-11-12 20:41:34,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:41:34" (3/3) ... [2018-11-12 20:41:34,621 INFO L112 eAbstractionObserver]: Analyzing ICFG gsv2008_true-unreach-call_true-termination.c.i [2018-11-12 20:41:34,631 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 20:41:34,641 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 20:41:34,661 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 20:41:34,731 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 20:41:34,732 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 20:41:34,732 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 20:41:34,732 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 20:41:34,732 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 20:41:34,736 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 20:41:34,736 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 20:41:34,736 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 20:41:34,780 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-12 20:41:34,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-12 20:41:34,789 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:41:34,790 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:41:34,792 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:41:34,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:41:34,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1281911547, now seen corresponding path program 1 times [2018-11-12 20:41:34,802 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:41:34,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:34,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:41:34,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:34,850 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:41:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:41:34,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:41:34,921 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 20:41:34,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-12 20:41:34,922 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 20:41:34,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-12 20:41:34,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-12 20:41:34,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-12 20:41:34,946 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-11-12 20:41:34,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:41:34,970 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-11-12 20:41:34,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-12 20:41:34,971 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-11-12 20:41:34,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:41:34,979 INFO L225 Difference]: With dead ends: 32 [2018-11-12 20:41:34,980 INFO L226 Difference]: Without dead ends: 13 [2018-11-12 20:41:34,983 INFO L604 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 [2018-11-12 20:41:34,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-12 20:41:35,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-12 20:41:35,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-12 20:41:35,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-12 20:41:35,022 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-11-12 20:41:35,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:41:35,022 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-12 20:41:35,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-12 20:41:35,023 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-12 20:41:35,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-12 20:41:35,024 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:41:35,024 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:41:35,024 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:41:35,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:41:35,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1335306055, now seen corresponding path program 1 times [2018-11-12 20:41:35,025 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:41:35,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:35,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:41:35,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:35,027 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:41:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:41:35,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:41:35,118 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 20:41:35,118 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 20:41:35,118 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 20:41:35,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 20:41:35,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 20:41:35,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 20:41:35,121 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2018-11-12 20:41:35,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:41:35,166 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-11-12 20:41:35,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 20:41:35,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-11-12 20:41:35,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:41:35,168 INFO L225 Difference]: With dead ends: 20 [2018-11-12 20:41:35,168 INFO L226 Difference]: Without dead ends: 15 [2018-11-12 20:41:35,170 INFO L604 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 [2018-11-12 20:41:35,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-12 20:41:35,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-12 20:41:35,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-12 20:41:35,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-12 20:41:35,175 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-11-12 20:41:35,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:41:35,176 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-12 20:41:35,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 20:41:35,176 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-12 20:41:35,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-12 20:41:35,177 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:41:35,177 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:41:35,178 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:41:35,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:41:35,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1931535679, now seen corresponding path program 1 times [2018-11-12 20:41:35,179 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:41:35,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:35,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:41:35,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:35,181 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:41:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:41:35,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:41:35,395 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:41:35,395 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:41:35,396 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-11-12 20:41:35,398 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [25], [28], [30], [36], [37], [38], [40] [2018-11-12 20:41:35,435 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 20:41:35,436 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 20:41:35,671 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 20:41:35,673 INFO L272 AbstractInterpreter]: Visited 13 different actions 58 times. Merged at 3 different actions 20 times. Widened at 1 different actions 3 times. Performed 164 root evaluator evaluations with a maximum evaluation depth of 4. Performed 164 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-11-12 20:41:35,682 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:41:35,684 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 20:41:35,684 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:41:35,684 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 20:41:35,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:41:35,706 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 20:41:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:41:35,732 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:41:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:41:35,894 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:41:36,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:41:36,363 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 20:41:36,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 13 [2018-11-12 20:41:36,363 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 20:41:36,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 20:41:36,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 20:41:36,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-11-12 20:41:36,365 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 6 states. [2018-11-12 20:41:36,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:41:36,475 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-11-12 20:41:36,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-12 20:41:36,475 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-11-12 20:41:36,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:41:36,476 INFO L225 Difference]: With dead ends: 15 [2018-11-12 20:41:36,476 INFO L226 Difference]: Without dead ends: 0 [2018-11-12 20:41:36,478 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-11-12 20:41:36,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-12 20:41:36,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-12 20:41:36,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-12 20:41:36,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-12 20:41:36,479 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-11-12 20:41:36,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:41:36,480 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-12 20:41:36,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 20:41:36,480 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-12 20:41:36,480 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-12 20:41:36,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-12 20:41:36,552 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-12 20:41:36,552 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-12 20:41:36,552 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-12 20:41:36,552 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-12 20:41:36,552 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-12 20:41:36,552 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-12 20:41:36,553 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 21) the Hoare annotation is: true [2018-11-12 20:41:36,553 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 21) no Hoare annotation was computed. [2018-11-12 20:41:36,553 INFO L425 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2018-11-12 20:41:36,553 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-11-12 20:41:36,553 INFO L425 ceAbstractionStarter]: For program point L15-1(lines 15 18) no Hoare annotation was computed. [2018-11-12 20:41:36,553 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 21) no Hoare annotation was computed. [2018-11-12 20:41:36,553 INFO L421 ceAbstractionStarter]: At program point L15-3(lines 15 18) the Hoare annotation is: (or (<= (+ main_~x~0 50) 0) (<= (+ main_~x~0 2) main_~y~0)) [2018-11-12 20:41:36,554 INFO L421 ceAbstractionStarter]: At program point L15-4(lines 15 18) the Hoare annotation is: (and (<= (+ main_~x~0 2) main_~y~0) (<= 2 main_~y~0)) [2018-11-12 20:41:36,554 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-12 20:41:36,554 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-12 20:41:36,554 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-12 20:41:36,554 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-12 20:41:36,554 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-12 20:41:36,554 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-12 20:41:36,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 08:41:36 BoogieIcfgContainer [2018-11-12 20:41:36,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 20:41:36,567 INFO L168 Benchmark]: Toolchain (without parser) took 2654.77 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 724.0 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -674.9 MB). Peak memory consumption was 49.1 MB. Max. memory is 7.1 GB. [2018-11-12 20:41:36,570 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 20:41:36,570 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.43 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. [2018-11-12 20:41:36,571 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.72 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 20:41:36,572 INFO L168 Benchmark]: Boogie Preprocessor took 21.60 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 20:41:36,573 INFO L168 Benchmark]: RCFGBuilder took 333.27 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 724.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -773.0 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2018-11-12 20:41:36,574 INFO L168 Benchmark]: TraceAbstraction took 1952.75 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 87.5 MB). Peak memory consumption was 87.5 MB. Max. memory is 7.1 GB. [2018-11-12 20:41:36,579 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 323.43 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 18.72 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 21.60 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 333.27 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 724.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -773.0 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1952.75 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 87.5 MB). Peak memory consumption was 87.5 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 + 50 <= 0 || x + 2 <= y - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 1.8s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 2 SDslu, 41 SDs, 0 SdLazy, 18 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s 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, 7 LocationsWithAnnotation, 9 PreInvPairs, 11 NumberOfFragments, 25 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 1640 SizeOfPredicates, 5 NumberOfNonLiveVariables, 35 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 4/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...