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 --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-invgen/large_const_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 17:20:13,264 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 17:20:13,266 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 17:20:13,284 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 17:20:13,285 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 17:20:13,287 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 17:20:13,288 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 17:20:13,290 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 17:20:13,292 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 17:20:13,295 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 17:20:13,297 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 17:20:13,297 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 17:20:13,298 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 17:20:13,299 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 17:20:13,307 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 17:20:13,308 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 17:20:13,312 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 17:20:13,314 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 17:20:13,317 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 17:20:13,320 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 17:20:13,322 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 17:20:13,324 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 17:20:13,327 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-15 17:20:13,327 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-15 17:20:13,327 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-15 17:20:13,330 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-15 17:20:13,331 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-15 17:20:13,332 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-15 17:20:13,334 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-15 17:20:13,335 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-15 17:20:13,335 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-15 17:20:13,337 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-15 17:20:13,340 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf [2018-09-15 17:20:13,362 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 17:20:13,363 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 17:20:13,364 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 17:20:13,365 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 17:20:13,365 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 17:20:13,365 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 17:20:13,365 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-15 17:20:13,366 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 17:20:13,366 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-15 17:20:13,366 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 17:20:13,366 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 17:20:13,367 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-15 17:20:13,367 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 17:20:13,367 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 17:20:13,368 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 17:20:13,368 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 17:20:13,368 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 17:20:13,368 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 17:20:13,370 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 17:20:13,370 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 17:20:13,370 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 17:20:13,371 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 17:20:13,371 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 17:20:13,371 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 17:20:13,371 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 17:20:13,371 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 17:20:13,372 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 17:20:13,372 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 17:20:13,372 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 17:20:13,372 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 17:20:13,372 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 17:20:13,373 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 17:20:13,373 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 17:20:13,373 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 17:20:13,435 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 17:20:13,452 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 17:20:13,456 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 17:20:13,458 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 17:20:13,459 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 17:20:13,460 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const_true-unreach-call_true-termination.i [2018-09-15 17:20:13,824 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e7c5cdf7/e9267ad311654cbebb39e77aef437c7d/FLAGa48773378 [2018-09-15 17:20:14,016 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 17:20:14,016 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const_true-unreach-call_true-termination.i [2018-09-15 17:20:14,024 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e7c5cdf7/e9267ad311654cbebb39e77aef437c7d/FLAGa48773378 [2018-09-15 17:20:14,048 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e7c5cdf7/e9267ad311654cbebb39e77aef437c7d [2018-09-15 17:20:14,061 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 17:20:14,065 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 17:20:14,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 17:20:14,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 17:20:14,075 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 17:20:14,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 05:20:14" (1/1) ... [2018-09-15 17:20:14,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c79c81d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:14, skipping insertion in model container [2018-09-15 17:20:14,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 05:20:14" (1/1) ... [2018-09-15 17:20:14,093 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 17:20:14,298 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 17:20:14,315 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 17:20:14,322 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 17:20:14,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:14 WrapperNode [2018-09-15 17:20:14,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 17:20:14,337 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 17:20:14,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 17:20:14,337 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 17:20:14,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:14" (1/1) ... [2018-09-15 17:20:14,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:14" (1/1) ... [2018-09-15 17:20:14,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 17:20:14,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 17:20:14,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 17:20:14,362 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 17:20:14,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:14" (1/1) ... [2018-09-15 17:20:14,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:14" (1/1) ... [2018-09-15 17:20:14,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:14" (1/1) ... [2018-09-15 17:20:14,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:14" (1/1) ... [2018-09-15 17:20:14,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:14" (1/1) ... [2018-09-15 17:20:14,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:14" (1/1) ... [2018-09-15 17:20:14,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:14" (1/1) ... [2018-09-15 17:20:14,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 17:20:14,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 17:20:14,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 17:20:14,385 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 17:20:14,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:14" (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 [2018-09-15 17:20:14,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 17:20:14,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 17:20:14,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 17:20:14,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 17:20:14,462 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 17:20:14,462 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 17:20:14,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-15 17:20:14,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-15 17:20:14,942 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 17:20:14,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 05:20:14 BoogieIcfgContainer [2018-09-15 17:20:14,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 17:20:14,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 17:20:14,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 17:20:14,948 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 17:20:14,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 05:20:14" (1/3) ... [2018-09-15 17:20:14,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3249fbd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 05:20:14, skipping insertion in model container [2018-09-15 17:20:14,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:14" (2/3) ... [2018-09-15 17:20:14,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3249fbd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 05:20:14, skipping insertion in model container [2018-09-15 17:20:14,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 05:20:14" (3/3) ... [2018-09-15 17:20:14,951 INFO L112 eAbstractionObserver]: Analyzing ICFG large_const_true-unreach-call_true-termination.i [2018-09-15 17:20:14,961 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 17:20:14,969 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 17:20:15,019 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 17:20:15,020 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 17:20:15,020 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 17:20:15,020 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 17:20:15,020 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 17:20:15,020 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 17:20:15,021 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 17:20:15,021 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 17:20:15,021 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 17:20:15,041 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-09-15 17:20:15,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-15 17:20:15,048 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:15,049 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:15,050 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:15,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1169309281, now seen corresponding path program 1 times [2018-09-15 17:20:15,059 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:15,060 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-15 17:20:15,062 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [35], [37], [41], [47], [55], [58], [60], [66], [67], [68], [70] [2018-09-15 17:20:15,120 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:15,120 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:15,185 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:15,186 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 15 variables. [2018-09-15 17:20:15,200 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:15,275 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 86.67% of their original sizes. [2018-09-15 17:20:15,275 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:15,327 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:15,329 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:15,329 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-15 17:20:15,329 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:15,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-15 17:20:15,340 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-15 17:20:15,341 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-15 17:20:15,343 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 4 states. [2018-09-15 17:20:15,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:15,622 INFO L93 Difference]: Finished difference Result 56 states and 76 transitions. [2018-09-15 17:20:15,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-15 17:20:15,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-09-15 17:20:15,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:15,633 INFO L225 Difference]: With dead ends: 56 [2018-09-15 17:20:15,633 INFO L226 Difference]: Without dead ends: 32 [2018-09-15 17:20:15,637 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-15 17:20:15,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-09-15 17:20:15,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 22. [2018-09-15 17:20:15,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-09-15 17:20:15,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2018-09-15 17:20:15,688 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 14 [2018-09-15 17:20:15,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:15,689 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-09-15 17:20:15,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-15 17:20:15,689 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2018-09-15 17:20:15,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-15 17:20:15,690 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:15,690 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:15,691 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:15,691 INFO L82 PathProgramCache]: Analyzing trace with hash -659000362, now seen corresponding path program 1 times [2018-09-15 17:20:15,692 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:15,692 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-09-15 17:20:15,692 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [37], [41], [47], [55], [58], [60], [66], [67], [68], [70] [2018-09-15 17:20:15,694 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:15,695 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:15,708 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:15,708 INFO L272 AbstractInterpreter]: Visited 11 different actions 11 times. Never merged. Never widened. Never found a fixpoint. Largest state had 15 variables. [2018-09-15 17:20:15,718 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:15,759 INFO L232 lantSequenceWeakener]: Weakened 6 states. On average, predicates are now at 79.53% of their original sizes. [2018-09-15 17:20:15,759 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:15,890 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:15,891 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:15,891 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-15 17:20:15,891 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:15,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-15 17:20:15,892 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-15 17:20:15,892 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-15 17:20:15,893 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 6 states. [2018-09-15 17:20:16,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:16,241 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2018-09-15 17:20:16,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-15 17:20:16,242 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-09-15 17:20:16,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:16,243 INFO L225 Difference]: With dead ends: 37 [2018-09-15 17:20:16,243 INFO L226 Difference]: Without dead ends: 24 [2018-09-15 17:20:16,245 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-09-15 17:20:16,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-09-15 17:20:16,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-09-15 17:20:16,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-09-15 17:20:16,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2018-09-15 17:20:16,253 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2018-09-15 17:20:16,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:16,253 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-09-15 17:20:16,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-15 17:20:16,254 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2018-09-15 17:20:16,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-15 17:20:16,255 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:16,255 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:16,255 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:16,256 INFO L82 PathProgramCache]: Analyzing trace with hash 701537581, now seen corresponding path program 1 times [2018-09-15 17:20:16,256 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:16,256 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-09-15 17:20:16,256 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [22], [25], [37], [41], [47], [55], [58], [60], [66], [67], [68], [70] [2018-09-15 17:20:16,258 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:16,259 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:16,284 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:16,284 INFO L272 AbstractInterpreter]: Visited 17 different actions 23 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 17 variables. [2018-09-15 17:20:16,323 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:16,395 INFO L232 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 73.33% of their original sizes. [2018-09-15 17:20:16,396 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:17,063 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:17,064 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:17,064 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-15 17:20:17,064 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:17,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-15 17:20:17,065 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-15 17:20:17,065 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-09-15 17:20:17,066 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 12 states. [2018-09-15 17:20:17,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:17,980 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2018-09-15 17:20:17,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-15 17:20:17,984 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2018-09-15 17:20:17,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:17,985 INFO L225 Difference]: With dead ends: 54 [2018-09-15 17:20:17,985 INFO L226 Difference]: Without dead ends: 38 [2018-09-15 17:20:17,986 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-09-15 17:20:17,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-09-15 17:20:17,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2018-09-15 17:20:17,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-09-15 17:20:18,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-09-15 17:20:18,000 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 19 [2018-09-15 17:20:18,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:18,001 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-09-15 17:20:18,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-15 17:20:18,001 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-09-15 17:20:18,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-15 17:20:18,002 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:18,002 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:18,003 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:18,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1708424439, now seen corresponding path program 1 times [2018-09-15 17:20:18,003 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:18,003 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-09-15 17:20:18,004 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [22], [27], [32], [37], [41], [47], [55], [58], [60], [66], [67], [68], [70] [2018-09-15 17:20:18,006 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:18,006 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:18,025 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:18,025 INFO L272 AbstractInterpreter]: Visited 18 different actions 24 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 17 variables. [2018-09-15 17:20:18,065 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:18,141 INFO L232 lantSequenceWeakener]: Weakened 13 states. On average, predicates are now at 72.43% of their original sizes. [2018-09-15 17:20:18,142 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:18,865 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:18,865 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:18,866 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-09-15 17:20:18,866 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:18,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-15 17:20:18,867 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-15 17:20:18,867 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-09-15 17:20:18,868 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 13 states. [2018-09-15 17:20:19,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:19,498 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2018-09-15 17:20:19,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-15 17:20:19,499 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2018-09-15 17:20:19,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:19,502 INFO L225 Difference]: With dead ends: 64 [2018-09-15 17:20:19,502 INFO L226 Difference]: Without dead ends: 48 [2018-09-15 17:20:19,503 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-09-15 17:20:19,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-15 17:20:19,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2018-09-15 17:20:19,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-09-15 17:20:19,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2018-09-15 17:20:19,518 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 20 [2018-09-15 17:20:19,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:19,518 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2018-09-15 17:20:19,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-15 17:20:19,519 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2018-09-15 17:20:19,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-15 17:20:19,519 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:19,520 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:19,520 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:19,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1315397429, now seen corresponding path program 1 times [2018-09-15 17:20:19,520 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:19,521 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-09-15 17:20:19,521 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [22], [27], [30], [37], [41], [47], [55], [58], [60], [66], [67], [68], [70] [2018-09-15 17:20:19,523 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:19,523 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:19,536 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:19,537 INFO L272 AbstractInterpreter]: Visited 18 different actions 24 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 17 variables. [2018-09-15 17:20:19,576 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:19,622 INFO L232 lantSequenceWeakener]: Weakened 13 states. On average, predicates are now at 72.43% of their original sizes. [2018-09-15 17:20:19,622 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:20,140 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:20,141 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:20,141 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-09-15 17:20:20,141 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:20,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-15 17:20:20,142 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-15 17:20:20,142 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-09-15 17:20:20,142 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 13 states. [2018-09-15 17:20:20,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:20,695 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2018-09-15 17:20:20,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-15 17:20:20,697 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2018-09-15 17:20:20,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:20,698 INFO L225 Difference]: With dead ends: 58 [2018-09-15 17:20:20,699 INFO L226 Difference]: Without dead ends: 42 [2018-09-15 17:20:20,699 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-09-15 17:20:20,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-09-15 17:20:20,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2018-09-15 17:20:20,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-15 17:20:20,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-09-15 17:20:20,714 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 20 [2018-09-15 17:20:20,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:20,714 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-09-15 17:20:20,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-15 17:20:20,715 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-09-15 17:20:20,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-15 17:20:20,716 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:20,716 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:20,716 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:20,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1155724272, now seen corresponding path program 1 times [2018-09-15 17:20:20,717 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:20,717 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 28 with the following transitions: [2018-09-15 17:20:20,717 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [22], [25], [37], [41], [47], [49], [55], [58], [60], [63], [65], [66], [67], [68], [70], [71] [2018-09-15 17:20:20,719 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:20,719 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:20,738 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:20,738 INFO L272 AbstractInterpreter]: Visited 21 different actions 38 times. Merged at 8 different actions 11 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 19 variables. [2018-09-15 17:20:20,761 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:20,836 INFO L232 lantSequenceWeakener]: Weakened 19 states. On average, predicates are now at 75.47% of their original sizes. [2018-09-15 17:20:20,836 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:21,092 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:21,092 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:21,093 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-09-15 17:20:21,093 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:21,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-15 17:20:21,094 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-15 17:20:21,095 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-09-15 17:20:21,095 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 13 states. [2018-09-15 17:20:21,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:21,673 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2018-09-15 17:20:21,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-15 17:20:21,674 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2018-09-15 17:20:21,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:21,675 INFO L225 Difference]: With dead ends: 54 [2018-09-15 17:20:21,675 INFO L226 Difference]: Without dead ends: 31 [2018-09-15 17:20:21,676 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2018-09-15 17:20:21,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-15 17:20:21,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-09-15 17:20:21,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-15 17:20:21,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-09-15 17:20:21,690 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2018-09-15 17:20:21,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:21,691 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-09-15 17:20:21,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-15 17:20:21,691 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-09-15 17:20:21,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-15 17:20:21,692 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:21,693 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:21,693 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:21,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1566064076, now seen corresponding path program 1 times [2018-09-15 17:20:21,693 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:21,694 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2018-09-15 17:20:21,694 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [22], [27], [32], [37], [41], [47], [49], [55], [58], [60], [63], [65], [66], [67], [68], [70], [71] [2018-09-15 17:20:21,696 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:21,696 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:21,715 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:21,715 INFO L272 AbstractInterpreter]: Visited 22 different actions 39 times. Merged at 8 different actions 11 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 19 variables. [2018-09-15 17:20:21,732 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:21,782 INFO L232 lantSequenceWeakener]: Weakened 20 states. On average, predicates are now at 74.77% of their original sizes. [2018-09-15 17:20:21,783 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:22,057 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:22,057 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:22,058 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-15 17:20:22,058 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:22,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-15 17:20:22,059 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-15 17:20:22,059 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2018-09-15 17:20:22,060 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 14 states. [2018-09-15 17:20:22,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:22,498 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2018-09-15 17:20:22,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-15 17:20:22,498 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2018-09-15 17:20:22,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:22,499 INFO L225 Difference]: With dead ends: 54 [2018-09-15 17:20:22,500 INFO L226 Difference]: Without dead ends: 31 [2018-09-15 17:20:22,501 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2018-09-15 17:20:22,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-15 17:20:22,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-09-15 17:20:22,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-15 17:20:22,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-09-15 17:20:22,512 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-09-15 17:20:22,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:22,512 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-09-15 17:20:22,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-15 17:20:22,513 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-09-15 17:20:22,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-15 17:20:22,513 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:22,514 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:22,514 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:22,514 INFO L82 PathProgramCache]: Analyzing trace with hash -734758514, now seen corresponding path program 1 times [2018-09-15 17:20:22,514 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:22,514 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2018-09-15 17:20:22,515 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [22], [27], [30], [37], [41], [47], [49], [55], [58], [60], [63], [65], [66], [67], [68], [70], [71] [2018-09-15 17:20:22,516 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:22,516 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:22,529 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:22,529 INFO L272 AbstractInterpreter]: Visited 22 different actions 39 times. Merged at 8 different actions 11 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 19 variables. [2018-09-15 17:20:22,534 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:22,587 INFO L232 lantSequenceWeakener]: Weakened 20 states. On average, predicates are now at 74.77% of their original sizes. [2018-09-15 17:20:22,588 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:22,937 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:22,937 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:22,937 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-15 17:20:22,938 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:22,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-15 17:20:22,939 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-15 17:20:22,939 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2018-09-15 17:20:22,939 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 14 states. [2018-09-15 17:20:23,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:23,269 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-09-15 17:20:23,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-15 17:20:23,270 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2018-09-15 17:20:23,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:23,270 INFO L225 Difference]: With dead ends: 34 [2018-09-15 17:20:23,270 INFO L226 Difference]: Without dead ends: 0 [2018-09-15 17:20:23,271 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2018-09-15 17:20:23,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-15 17:20:23,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-15 17:20:23,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-15 17:20:23,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-15 17:20:23,272 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2018-09-15 17:20:23,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:23,272 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-15 17:20:23,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-15 17:20:23,273 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-15 17:20:23,273 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-15 17:20:23,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-15 17:20:23,840 WARN L178 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 317 DAG size of output: 314 [2018-09-15 17:20:24,141 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 361 DAG size of output: 358 [2018-09-15 17:20:24,252 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 267 [2018-09-15 17:20:26,051 WARN L178 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 314 DAG size of output: 32 [2018-09-15 17:20:27,382 WARN L178 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 358 DAG size of output: 53 [2018-09-15 17:20:28,437 WARN L178 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 267 DAG size of output: 67 [2018-09-15 17:20:28,441 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-09-15 17:20:28,441 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-15 17:20:28,442 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-15 17:20:28,442 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-15 17:20:28,442 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-15 17:20:28,442 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-15 17:20:28,442 INFO L422 ceAbstractionStarter]: At program point L33(line 33) the Hoare annotation is: (let ((.cse3 (* 2 main_~c3~0)) (.cse4 (+ main_~j~0 main_~n~0)) (.cse0 (* 2 main_~c1~0)) (.cse1 (* 2 main_~c2~0)) (.cse2 (+ main_~j~0 1))) (and (<= 8000 .cse0) (<= .cse1 4000) (<= .cse2 main_~n~0) (<= 2 (+ main_~k~0 main_~n~0)) (<= .cse3 20000) (<= 20000 .cse3) (<= 1 .cse4) (<= .cse4 1) (<= .cse0 8000) (<= (+ main_~j~0 main_~k~0) 10000) (<= 4000 .cse1) (<= main_~n~0 .cse2))) [2018-09-15 17:20:28,442 INFO L426 ceAbstractionStarter]: For program point L33-1(line 33) no Hoare annotation was computed. [2018-09-15 17:20:28,443 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 10 38) no Hoare annotation was computed. [2018-09-15 17:20:28,443 INFO L426 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-09-15 17:20:28,443 INFO L426 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-09-15 17:20:28,443 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 10 38) no Hoare annotation was computed. [2018-09-15 17:20:28,443 INFO L426 ceAbstractionStarter]: For program point L32-1(lines 32 36) no Hoare annotation was computed. [2018-09-15 17:20:28,443 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 10 38) the Hoare annotation is: true [2018-09-15 17:20:28,444 INFO L422 ceAbstractionStarter]: At program point L32-3(lines 32 36) the Hoare annotation is: (let ((.cse0 (+ main_~j~0 main_~k~0)) (.cse1 (<= main_~n~0 main_~j~0))) (or (and (<= 0 (* 2 main_~i~0)) (<= .cse0 0) (<= main_~i~0 main_~k~0) (<= main_~k~0 main_~n~0) .cse1) (let ((.cse5 (* 2 main_~c3~0)) (.cse2 (* 2 main_~c1~0)) (.cse3 (* 2 main_~c2~0))) (and (<= 8000 .cse2) (<= .cse3 4000) (let ((.cse4 (* 2 main_~j~0))) (or (and (<= 2 (+ main_~j~0 main_~n~0)) (<= 0 (* 2 main_~k~0)) (<= .cse4 2) (<= .cse0 10000) .cse1) (and (<= 0 (* 2 main_~n~0)) (<= main_~k~0 (+ main_~n~0 9999)) (<= .cse4 0) (<= 0 .cse4) (<= main_~n~0 main_~k~0) (<= main_~n~0 (+ main_~j~0 1))))) (<= .cse5 20000) (<= 20000 .cse5) (<= .cse2 8000) (<= 4000 .cse3))))) [2018-09-15 17:20:28,444 INFO L426 ceAbstractionStarter]: For program point L32-4(lines 32 36) no Hoare annotation was computed. [2018-09-15 17:20:28,444 INFO L426 ceAbstractionStarter]: For program point L26(lines 26 29) no Hoare annotation was computed. [2018-09-15 17:20:28,444 INFO L426 ceAbstractionStarter]: For program point L24(lines 24 29) no Hoare annotation was computed. [2018-09-15 17:20:28,444 INFO L422 ceAbstractionStarter]: At program point L26-2(lines 20 30) the Hoare annotation is: (let ((.cse9 (* 2 main_~c3~0)) (.cse10 (* 2 main_~c2~0)) (.cse8 (* 2 main_~c1~0))) (let ((.cse0 (<= 8000 .cse8)) (.cse4 (<= main_~n~0 main_~i~0)) (.cse7 (<= 4000 .cse10)) (.cse6 (<= .cse10 4000)) (.cse2 (<= .cse9 20000)) (.cse3 (<= 20000 .cse9)) (.cse5 (<= .cse8 8000))) (or (and (or (and .cse0 (let ((.cse1 (+ main_~i~0 9999))) (and (<= main_~i~0 main_~n~0) (<= main_~k~0 .cse1) .cse2 .cse3 (<= main_~c3~0 main_~k~0) .cse4 (<= .cse1 main_~c3~0))) .cse5) (and .cse2 .cse3 (and (<= (+ main_~c1~0 main_~i~0) 4001) (<= main_~c1~0 (+ main_~i~0 3999)) (<= (+ main_~n~0 3999) main_~k~0) (<= 4001 (+ main_~c1~0 main_~n~0)) (<= (* 2 main_~k~0) 8000)))) .cse6 .cse7) (and .cse0 (or (and (<= main_~k~0 (+ main_~n~0 1999)) (<= (+ main_~c2~0 main_~i~0) 2001) (<= main_~c2~0 main_~k~0) .cse4 .cse7) (and .cse6 (<= 0 (* 2 main_~i~0)) (<= (+ main_~k~0 2000) main_~c2~0) (<= (+ main_~n~0 1991) main_~c2~0) (<= main_~i~0 main_~k~0) (<= main_~k~0 main_~n~0))) .cse2 .cse3 .cse5)))) [2018-09-15 17:20:28,445 INFO L426 ceAbstractionStarter]: For program point L20-1(lines 20 30) no Hoare annotation was computed. [2018-09-15 17:20:28,445 INFO L426 ceAbstractionStarter]: For program point L20-3(lines 20 30) no Hoare annotation was computed. [2018-09-15 17:20:28,445 INFO L429 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-09-15 17:20:28,445 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-09-15 17:20:28,445 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-09-15 17:20:28,445 INFO L426 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-09-15 17:20:28,445 INFO L426 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-09-15 17:20:28,446 INFO L426 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-09-15 17:20:28,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 05:20:28 BoogieIcfgContainer [2018-09-15 17:20:28,467 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-15 17:20:28,470 INFO L168 Benchmark]: Toolchain (without parser) took 14408.59 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.0 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 706.2 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:28,471 INFO L168 Benchmark]: CDTParser took 0.99 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. [2018-09-15 17:20:28,472 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.92 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. [2018-09-15 17:20:28,476 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.08 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. [2018-09-15 17:20:28,477 INFO L168 Benchmark]: Boogie Preprocessor took 23.34 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. [2018-09-15 17:20:28,477 INFO L168 Benchmark]: RCFGBuilder took 558.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -800.0 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:28,478 INFO L168 Benchmark]: TraceAbstraction took 13522.98 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 262.1 MB). Free memory was 2.2 GB in the beginning and 2.5 GB in the end (delta: -281.3 MB). Peak memory consumption was 746.4 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:28,489 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.99 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 270.92 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 24.08 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 23.34 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 558.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -800.0 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13522.98 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 262.1 MB). Free memory was 2.2 GB in the beginning and 2.5 GB in the end (delta: -281.3 MB). Peak memory consumption was 746.4 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: 32]: Loop Invariant Derived loop invariant: ((((0 <= 2 * i && j + k <= 0) && i <= k) && k <= n) && n <= j) || ((((((8000 <= 2 * c1 && 2 * c2 <= 4000) && (((((2 <= j + n && 0 <= 2 * k) && 2 * j <= 2) && j + k <= 10000) && n <= j) || (((((0 <= 2 * n && k <= n + 9999) && 2 * j <= 0) && 0 <= 2 * j) && n <= k) && n <= j + 1))) && 2 * c3 <= 20000) && 20000 <= 2 * c3) && 2 * c1 <= 8000) && 4000 <= 2 * c2) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((((8000 <= 2 * c1 && (((((i <= n && k <= i + 9999) && 2 * c3 <= 20000) && 20000 <= 2 * c3) && c3 <= k) && n <= i) && i + 9999 <= c3) && 2 * c1 <= 8000) || ((2 * c3 <= 20000 && 20000 <= 2 * c3) && (((c1 + i <= 4001 && c1 <= i + 3999) && n + 3999 <= k) && 4001 <= c1 + n) && 2 * k <= 8000)) && 2 * c2 <= 4000) && 4000 <= 2 * c2) || ((((8000 <= 2 * c1 && (((((k <= n + 1999 && c2 + i <= 2001) && c2 <= k) && n <= i) && 4000 <= 2 * c2) || (((((2 * c2 <= 4000 && 0 <= 2 * i) && k + 2000 <= c2) && n + 1991 <= c2) && i <= k) && k <= n))) && 2 * c3 <= 20000) && 20000 <= 2 * c3) && 2 * c1 <= 8000) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. SAFE Result, 13.4s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 4.1s AutomataDifference, 0.0s DeadEndRemovalTime, 5.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 138 SDtfs, 302 SDslu, 562 SDs, 0 SdLazy, 706 SolverSat, 107 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 16 DeclaredPredicates, 195 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 8 AbstIntIterations, 8 AbstIntStrong, 0.8744914433322567 AbsIntWeakeningRatio, 1.0797546012269938 AbsIntAvgWeakeningVarsNumRemoved, 17.558282208588956 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 34 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 18 PreInvPairs, 38 NumberOfFragments, 334 HoareAnnotationTreeSize, 18 FomulaSimplifications, 3064 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 8 FomulaSimplificationsInter, 20673 FormulaSimplificationTreeSizeReductionInter, 4.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: No data available, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/large_const_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-15_17-20-28-517.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/large_const_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-15_17-20-28-517.csv Received shutdown request...