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/loops/linear_sea.ch_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-08 11:22:23,249 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-08 11:22:23,251 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-08 11:22:23,264 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-08 11:22:23,264 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-08 11:22:23,265 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-08 11:22:23,267 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-08 11:22:23,269 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-08 11:22:23,270 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-08 11:22:23,271 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-08 11:22:23,272 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-08 11:22:23,272 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-08 11:22:23,273 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-08 11:22:23,274 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-08 11:22:23,277 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-08 11:22:23,278 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-08 11:22:23,279 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-08 11:22:23,281 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-08 11:22:23,286 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-08 11:22:23,293 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-08 11:22:23,295 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-08 11:22:23,297 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-08 11:22:23,301 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-08-08 11:22:23,317 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 [2018-08-08 11:22:23,332 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-08 11:22:23,332 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-08 11:22:23,333 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-08 11:22:23,333 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-08 11:22:23,334 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-08 11:22:23,334 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-08 11:22:23,334 INFO L133 SettingsManager]: * Congruence Domain=false [2018-08-08 11:22:23,334 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-08 11:22:23,334 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-08-08 11:22:23,335 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-08 11:22:23,335 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-08 11:22:23,335 INFO L133 SettingsManager]: * Interval Domain=false [2018-08-08 11:22:23,336 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-08 11:22:23,336 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-08 11:22:23,336 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-08 11:22:23,336 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-08 11:22:23,337 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-08 11:22:23,337 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-08 11:22:23,337 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-08 11:22:23,337 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-08 11:22:23,338 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-08 11:22:23,338 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-08 11:22:23,338 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-08 11:22:23,338 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-08 11:22:23,338 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-08 11:22:23,339 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-08 11:22:23,339 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-08 11:22:23,339 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-08 11:22:23,339 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-08-08 11:22:23,339 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-08 11:22:23,340 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-08 11:22:23,340 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-08 11:22:23,340 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-08 11:22:23,340 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-08 11:22:23,419 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-08 11:22:23,435 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-08 11:22:23,442 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-08 11:22:23,444 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-08 11:22:23,445 INFO L276 PluginConnector]: CDTParser initialized [2018-08-08 11:22:23,446 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/linear_sea.ch_true-unreach-call.i [2018-08-08 11:22:23,816 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad1c2ddce/1d1688b0161c469e880946c08770979a/FLAG5bbc4e248 [2018-08-08 11:22:24,021 INFO L276 CDTParser]: Found 1 translation units. [2018-08-08 11:22:24,022 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/linear_sea.ch_true-unreach-call.i [2018-08-08 11:22:24,036 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad1c2ddce/1d1688b0161c469e880946c08770979a/FLAG5bbc4e248 [2018-08-08 11:22:24,059 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad1c2ddce/1d1688b0161c469e880946c08770979a [2018-08-08 11:22:24,072 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-08 11:22:24,074 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-08 11:22:24,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-08 11:22:24,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-08 11:22:24,086 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-08 11:22:24,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 11:22:24" (1/1) ... [2018-08-08 11:22:24,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e247a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 11:22:24, skipping insertion in model container [2018-08-08 11:22:24,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 11:22:24" (1/1) ... [2018-08-08 11:22:24,258 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-08 11:22:24,312 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-08 11:22:24,334 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-08 11:22:24,341 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-08 11:22:24,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 11:22:24 WrapperNode [2018-08-08 11:22:24,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-08 11:22:24,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-08 11:22:24,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-08 11:22:24,362 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-08 11:22:24,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 11:22:24" (1/1) ... [2018-08-08 11:22:24,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 11:22:24" (1/1) ... [2018-08-08 11:22:24,415 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-08 11:22:24,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-08 11:22:24,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-08 11:22:24,418 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-08 11:22:24,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 11:22:24" (1/1) ... [2018-08-08 11:22:24,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 11:22:24" (1/1) ... [2018-08-08 11:22:24,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 11:22:24" (1/1) ... [2018-08-08 11:22:24,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 11:22:24" (1/1) ... [2018-08-08 11:22:24,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 11:22:24" (1/1) ... [2018-08-08 11:22:24,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 11:22:24" (1/1) ... [2018-08-08 11:22:24,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 11:22:24" (1/1) ... [2018-08-08 11:22:24,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-08 11:22:24,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-08 11:22:24,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-08 11:22:24,446 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-08 11:22:24,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 11:22:24" (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 [2018-08-08 11:22:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-08 11:22:24,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-08 11:22:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_linear_sea_ch_true_unreach_call_i__linear_search [2018-08-08 11:22:24,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_linear_sea_ch_true_unreach_call_i__linear_search [2018-08-08 11:22:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_linear_sea_ch_true_unreach_call_i____VERIFIER_assert [2018-08-08 11:22:24,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_linear_sea_ch_true_unreach_call_i____VERIFIER_assert [2018-08-08 11:22:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-08 11:22:24,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-08 11:22:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-08 11:22:24,579 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-08 11:22:25,007 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-08 11:22:25,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 11:22:25 BoogieIcfgContainer [2018-08-08 11:22:25,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-08 11:22:25,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-08 11:22:25,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-08 11:22:25,014 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-08 11:22:25,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.08 11:22:24" (1/3) ... [2018-08-08 11:22:25,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c109511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.08 11:22:25, skipping insertion in model container [2018-08-08 11:22:25,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 11:22:24" (2/3) ... [2018-08-08 11:22:25,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c109511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.08 11:22:25, skipping insertion in model container [2018-08-08 11:22:25,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 11:22:25" (3/3) ... [2018-08-08 11:22:25,019 INFO L112 eAbstractionObserver]: Analyzing ICFG linear_sea.ch_true-unreach-call.i [2018-08-08 11:22:25,030 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-08 11:22:25,038 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-08 11:22:25,083 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-08 11:22:25,083 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-08 11:22:25,084 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-08 11:22:25,084 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-08 11:22:25,084 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-08 11:22:25,084 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-08 11:22:25,084 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-08 11:22:25,085 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-08 11:22:25,085 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-08 11:22:25,104 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-08-08 11:22:25,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-08-08 11:22:25,111 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 11:22:25,112 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-08 11:22:25,113 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_linear_sea_ch_true_unreach_call_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 11:22:25,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1185499889, now seen corresponding path program 1 times [2018-08-08 11:22:25,121 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 11:22:25,122 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2018-08-08 11:22:25,126 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [21], [25], [27], [28], [31], [33], [42], [44], [48], [49], [50], [52], [53], [54] [2018-08-08 11:22:25,181 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-08-08 11:22:25,181 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 11:22:25,262 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-08-08 11:22:25,488 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 11:22:25,491 INFO L272 AbstractInterpreter]: Visited 9 different actions 9 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-08-08 11:22:25,542 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 11:22:25,731 INFO L232 lantSequenceWeakener]: Weakened 8 states. On average, predicates are now at 91.11% of their original sizes. [2018-08-08 11:22:25,731 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 11:22:25,929 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 11:22:25,933 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 11:22:25,933 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-08-08 11:22:25,933 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 11:22:25,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-08 11:22:25,946 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-08 11:22:25,946 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-08-08 11:22:25,949 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2018-08-08 11:22:26,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-08 11:22:26,463 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2018-08-08 11:22:26,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-08-08 11:22:26,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-08-08 11:22:26,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-08 11:22:26,476 INFO L225 Difference]: With dead ends: 51 [2018-08-08 11:22:26,476 INFO L226 Difference]: Without dead ends: 28 [2018-08-08 11:22:26,480 INFO L603 BasicCegarLoop]: 2 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-08-08 11:22:26,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-08-08 11:22:26,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2018-08-08 11:22:26,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-08-08 11:22:26,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-08-08 11:22:26,523 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 17 [2018-08-08 11:22:26,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-08 11:22:26,524 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-08-08 11:22:26,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-08 11:22:26,524 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-08-08 11:22:26,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-08-08 11:22:26,525 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 11:22:26,526 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-08 11:22:26,526 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_linear_sea_ch_true_unreach_call_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 11:22:26,527 INFO L82 PathProgramCache]: Analyzing trace with hash 2111077520, now seen corresponding path program 1 times [2018-08-08 11:22:26,527 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 11:22:26,527 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-08-08 11:22:26,527 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [8], [11], [17], [25], [27], [28], [31], [33], [42], [44], [48], [49], [50], [52], [53], [54] [2018-08-08 11:22:26,530 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-08-08 11:22:26,530 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 11:22:26,536 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-08-08 11:22:26,794 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 11:22:26,795 INFO L272 AbstractInterpreter]: Visited 19 different actions 19 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-08-08 11:22:26,833 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 11:22:27,078 INFO L232 lantSequenceWeakener]: Weakened 18 states. On average, predicates are now at 87.41% of their original sizes. [2018-08-08 11:22:27,078 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 11:22:27,982 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 11:22:27,983 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 11:22:27,983 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-08-08 11:22:27,983 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 11:22:27,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-08-08 11:22:27,984 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-08-08 11:22:27,985 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-08-08 11:22:27,985 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 11 states. [2018-08-08 11:22:29,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-08 11:22:29,006 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2018-08-08 11:22:29,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-08-08 11:22:29,007 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-08-08 11:22:29,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-08 11:22:29,009 INFO L225 Difference]: With dead ends: 36 [2018-08-08 11:22:29,010 INFO L226 Difference]: Without dead ends: 25 [2018-08-08 11:22:29,012 INFO L603 BasicCegarLoop]: 2 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-08-08 11:22:29,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-08-08 11:22:29,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-08-08 11:22:29,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-08-08 11:22:29,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-08-08 11:22:29,022 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 20 [2018-08-08 11:22:29,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-08 11:22:29,022 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-08-08 11:22:29,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-08-08 11:22:29,023 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-08-08 11:22:29,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-08-08 11:22:29,024 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 11:22:29,024 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-08 11:22:29,024 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_linear_sea_ch_true_unreach_call_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 11:22:29,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1786013849, now seen corresponding path program 1 times [2018-08-08 11:22:29,025 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 11:22:29,025 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-08-08 11:22:29,025 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [8], [11], [17], [19], [26], [27], [28], [31], [33], [42], [44], [48], [49], [50], [52], [53], [54] [2018-08-08 11:22:29,028 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-08-08 11:22:29,028 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 11:22:29,034 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-08-08 11:22:30,479 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-08-08 11:22:30,479 INFO L272 AbstractInterpreter]: Visited 21 different actions 269 times. Merged at 7 different actions 217 times. Widened at 1 different actions 27 times. Found 32 fixpoints after 2 different actions. Largest state had 29 variables. [2018-08-08 11:22:30,521 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-08-08 11:22:30,543 WARN L205 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-08-08 11:22:30,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.08 11:22:30 BoogieIcfgContainer [2018-08-08 11:22:30,543 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-08-08 11:22:30,544 INFO L168 Benchmark]: Toolchain (without parser) took 6471.24 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -636.5 MB). Peak memory consumption was 737.8 MB. Max. memory is 7.1 GB. [2018-08-08 11:22:30,547 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-08-08 11:22:30,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.28 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. [2018-08-08 11:22:30,549 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.54 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. [2018-08-08 11:22:30,549 INFO L168 Benchmark]: Boogie Preprocessor took 29.48 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. [2018-08-08 11:22:30,550 INFO L168 Benchmark]: RCFGBuilder took 562.43 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 721.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -760.2 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-08-08 11:22:30,551 INFO L168 Benchmark]: TraceAbstraction took 5533.86 ms. Allocated memory was 2.2 GB in the beginning and 2.6 GB in the end (delta: 369.1 MB). Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 113.1 MB). Peak memory consumption was 766.0 MB. Max. memory is 7.1 GB. [2018-08-08 11:22:30,559 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 284.28 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 54.54 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 29.48 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 562.43 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 721.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -760.2 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5533.86 ms. Allocated memory was 2.2 GB in the beginning and 2.6 GB in the end (delta: 369.1 MB). Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 113.1 MB). Peak memory consumption was 766.0 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: [L10] unsigned int SIZE; [L20] SIZE=(__VERIFIER_nondet_uint()/8)+1 [L21] CALL int a[SIZE]; [L21] RET int a[SIZE]; [L22] CALL a[SIZE/2]=3 [L22] RET a[SIZE/2]=3 [L23] CALL, EXPR linear_search(a,SIZE,3) [L12] unsigned int j=0; [L13] j