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_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested6_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 09:05:24,439 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 09:05:24,441 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 09:05:24,453 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 09:05:24,454 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 09:05:24,455 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 09:05:24,456 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 09:05:24,458 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 09:05:24,460 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 09:05:24,460 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 09:05:24,461 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 09:05:24,462 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 09:05:24,463 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 09:05:24,464 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 09:05:24,465 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 09:05:24,466 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 09:05:24,467 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 09:05:24,469 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 09:05:24,471 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 09:05:24,472 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 09:05:24,476 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 09:05:24,477 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 09:05:24,485 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 09:05:24,485 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 09:05:24,486 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 09:05:24,487 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 09:05:24,491 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 09:05:24,492 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 09:05:24,492 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 09:05:24,493 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 09:05:24,494 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 09:05:24,494 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-11 09:05:24,501 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf [2018-09-11 09:05:24,530 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 09:05:24,531 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 09:05:24,532 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 09:05:24,533 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 09:05:24,533 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 09:05:24,533 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 09:05:24,533 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 09:05:24,536 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-11 09:05:24,536 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 09:05:24,536 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 09:05:24,536 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 09:05:24,537 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 09:05:24,538 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 09:05:24,538 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 09:05:24,539 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 09:05:24,539 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 09:05:24,539 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 09:05:24,539 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 09:05:24,539 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 09:05:24,540 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 09:05:24,540 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 09:05:24,540 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 09:05:24,540 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 09:05:24,541 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 09:05:24,542 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 09:05:24,542 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 09:05:24,542 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 09:05:24,542 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 09:05:24,542 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 09:05:24,543 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 09:05:24,543 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 09:05:24,543 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 09:05:24,543 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 09:05:24,606 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 09:05:24,619 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 09:05:24,623 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 09:05:24,625 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 09:05:24,625 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 09:05:24,626 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested6_true-unreach-call_true-termination.i [2018-09-11 09:05:24,988 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75ea96d71/68e636cb9d64464b97bcb9d7b67b21b1/FLAGbafee4241 [2018-09-11 09:05:25,121 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 09:05:25,121 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested6_true-unreach-call_true-termination.i [2018-09-11 09:05:25,128 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75ea96d71/68e636cb9d64464b97bcb9d7b67b21b1/FLAGbafee4241 [2018-09-11 09:05:25,144 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75ea96d71/68e636cb9d64464b97bcb9d7b67b21b1 [2018-09-11 09:05:25,157 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 09:05:25,160 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 09:05:25,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 09:05:25,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 09:05:25,168 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 09:05:25,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 09:05:25" (1/1) ... [2018-09-11 09:05:25,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5774f606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 09:05:25, skipping insertion in model container [2018-09-11 09:05:25,172 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 09:05:25" (1/1) ... [2018-09-11 09:05:25,344 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 09:05:25,383 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 09:05:25,399 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 09:05:25,408 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 09:05:25,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 09:05:25 WrapperNode [2018-09-11 09:05:25,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 09:05:25,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 09:05:25,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 09:05:25,423 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 09:05:25,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 09:05:25" (1/1) ... [2018-09-11 09:05:25,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 09:05:25" (1/1) ... [2018-09-11 09:05:25,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 09:05:25,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 09:05:25,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 09:05:25,442 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 09:05:25,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 09:05:25" (1/1) ... [2018-09-11 09:05:25,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 09:05:25" (1/1) ... [2018-09-11 09:05:25,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 09:05:25" (1/1) ... [2018-09-11 09:05:25,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 09:05:25" (1/1) ... [2018-09-11 09:05:25,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 09:05:25" (1/1) ... [2018-09-11 09:05:25,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 09:05:25" (1/1) ... [2018-09-11 09:05:25,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 09:05:25" (1/1) ... [2018-09-11 09:05:25,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 09:05:25,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 09:05:25,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 09:05:25,463 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 09:05:25,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 09:05:25" (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 [2018-09-11 09:05:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 09:05:25,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 09:05:25,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 09:05:25,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 09:05:25,525 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 09:05:25,525 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 09:05:25,525 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assert [2018-09-11 09:05:25,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assert [2018-09-11 09:05:25,959 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 09:05:25,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 09:05:25 BoogieIcfgContainer [2018-09-11 09:05:25,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 09:05:25,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 09:05:25,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 09:05:25,974 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 09:05:25,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 09:05:25" (1/3) ... [2018-09-11 09:05:25,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@475e2462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 09:05:25, skipping insertion in model container [2018-09-11 09:05:25,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 09:05:25" (2/3) ... [2018-09-11 09:05:25,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@475e2462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 09:05:25, skipping insertion in model container [2018-09-11 09:05:25,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 09:05:25" (3/3) ... [2018-09-11 09:05:25,977 INFO L112 eAbstractionObserver]: Analyzing ICFG nested6_true-unreach-call_true-termination.i [2018-09-11 09:05:25,986 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 09:05:25,993 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 09:05:26,034 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 09:05:26,035 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 09:05:26,035 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 09:05:26,035 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 09:05:26,035 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 09:05:26,036 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 09:05:26,036 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 09:05:26,036 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 09:05:26,036 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 09:05:26,052 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-09-11 09:05:26,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-11 09:05:26,059 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 09:05:26,060 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 09:05:26,061 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 09:05:26,066 INFO L82 PathProgramCache]: Analyzing trace with hash 416534784, now seen corresponding path program 1 times [2018-09-11 09:05:26,069 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 09:05:26,070 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2018-09-11 09:05:26,073 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [15], [19], [24], [28], [33], [53], [67], [70], [72], [78], [79], [80], [84] [2018-09-11 09:05:26,126 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 09:05:26,127 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 09:05:26,232 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 09:05:26,233 INFO L272 AbstractInterpreter]: Visited 16 different actions 16 times. Never merged. Never widened. Never found a fixpoint. Largest state had 7 variables. [2018-09-11 09:05:26,247 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 09:05:26,355 INFO L232 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 38% of their original sizes. [2018-09-11 09:05:26,355 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 09:05:26,987 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 09:05:26,988 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 09:05:26,989 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-11 09:05:26,989 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 09:05:26,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-11 09:05:27,001 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-11 09:05:27,002 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-09-11 09:05:27,005 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 11 states. [2018-09-11 09:05:28,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 09:05:28,118 INFO L93 Difference]: Finished difference Result 108 states and 169 transitions. [2018-09-11 09:05:28,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-11 09:05:28,121 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2018-09-11 09:05:28,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 09:05:28,130 INFO L225 Difference]: With dead ends: 108 [2018-09-11 09:05:28,131 INFO L226 Difference]: Without dead ends: 68 [2018-09-11 09:05:28,135 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2018-09-11 09:05:28,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-11 09:05:28,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 44. [2018-09-11 09:05:28,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-11 09:05:28,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-09-11 09:05:28,188 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 17 [2018-09-11 09:05:28,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 09:05:28,189 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-09-11 09:05:28,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-11 09:05:28,189 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-09-11 09:05:28,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-11 09:05:28,191 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 09:05:28,191 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 09:05:28,192 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 09:05:28,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1670630326, now seen corresponding path program 1 times [2018-09-11 09:05:28,192 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 09:05:28,192 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-09-11 09:05:28,193 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [15], [19], [24], [28], [33], [36], [40], [45], [67], [70], [72], [78], [79], [80], [82] [2018-09-11 09:05:28,195 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 09:05:28,195 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 09:05:28,215 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-11 09:05:28,215 INFO L272 AbstractInterpreter]: Visited 19 different actions 19 times. Never merged. Never widened. Never found a fixpoint. Largest state had 7 variables. [2018-09-11 09:05:28,238 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-11 09:05:28,255 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-11 09:05:28,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 09:05:28 BoogieIcfgContainer [2018-09-11 09:05:28,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-11 09:05:28,257 INFO L168 Benchmark]: Toolchain (without parser) took 3098.82 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -690.5 MB). Peak memory consumption was 59.3 MB. Max. memory is 7.1 GB. [2018-09-11 09:05:28,259 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-09-11 09:05:28,259 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.75 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. [2018-09-11 09:05:28,260 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.81 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-11 09:05:28,261 INFO L168 Benchmark]: Boogie Preprocessor took 20.88 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. [2018-09-11 09:05:28,262 INFO L168 Benchmark]: RCFGBuilder took 504.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -802.8 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-09-11 09:05:28,263 INFO L168 Benchmark]: TraceAbstraction took 2287.79 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 101.8 MB). Peak memory consumption was 101.8 MB. Max. memory is 7.1 GB. [2018-09-11 09:05:28,267 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 260.75 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 18.81 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.88 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 504.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -802.8 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2287.79 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 101.8 MB). Peak memory consumption was 101.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L11] int i,j,k,n; [L12] k = __VERIFIER_nondet_int() [L13] n = __VERIFIER_nondet_int() [L14] COND FALSE !(!(n < 1000000)) [L15] COND TRUE k == n [L19] i=0 [L19] COND TRUE i=2*i) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 32 locations, 1 error locations. UNKNOWN Result, 2.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 36 SDtfs, 73 SDslu, 204 SDs, 0 SdLazy, 193 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9419642857142858 AbsIntWeakeningRatio, 0.5 AbsIntAvgWeakeningVarsNumRemoved, 6.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: No data available, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested6_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-11_09-05-28-280.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested6_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-11_09-05-28-280.csv Received shutdown request...