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/sum_array_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 19:30:14,371 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 19:30:14,374 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 19:30:14,389 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 19:30:14,390 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 19:30:14,391 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 19:30:14,392 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 19:30:14,394 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 19:30:14,395 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 19:30:14,396 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 19:30:14,397 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 19:30:14,397 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 19:30:14,398 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 19:30:14,399 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 19:30:14,401 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 19:30:14,401 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 19:30:14,402 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 19:30:14,404 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 19:30:14,406 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 19:30:14,408 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 19:30:14,409 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 19:30:14,410 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 19:30:14,413 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 19:30:14,413 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 19:30:14,413 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 19:30:14,414 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 19:30:14,415 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 19:30:14,416 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 19:30:14,417 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 19:30:14,418 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 19:30:14,418 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 19:30:14,419 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 19:30:14,419 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 19:30:14,420 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 19:30:14,421 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 19:30:14,422 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 19:30:14,422 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 [2018-09-11 19:30:14,438 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 19:30:14,439 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 19:30:14,440 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 19:30:14,440 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 19:30:14,440 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 19:30:14,440 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 19:30:14,441 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-11 19:30:14,441 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 19:30:14,441 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-11 19:30:14,441 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 19:30:14,441 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 19:30:14,441 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 19:30:14,442 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 19:30:14,442 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 19:30:14,443 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 19:30:14,443 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 19:30:14,443 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 19:30:14,443 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 19:30:14,443 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 19:30:14,444 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 19:30:14,444 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 19:30:14,444 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 19:30:14,444 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 19:30:14,444 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 19:30:14,445 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 19:30:14,445 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 19:30:14,445 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 19:30:14,445 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 19:30:14,445 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 19:30:14,446 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 19:30:14,446 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 19:30:14,446 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 19:30:14,446 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 19:30:14,446 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 19:30:14,498 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 19:30:14,519 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 19:30:14,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 19:30:14,526 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 19:30:14,526 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 19:30:14,527 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array_true-unreach-call.i [2018-09-11 19:30:14,855 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f3a71fa8/da528ffb60194ef082fec3f20e03e517/FLAGb6231d825 [2018-09-11 19:30:15,035 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 19:30:15,036 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array_true-unreach-call.i [2018-09-11 19:30:15,043 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f3a71fa8/da528ffb60194ef082fec3f20e03e517/FLAGb6231d825 [2018-09-11 19:30:15,069 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f3a71fa8/da528ffb60194ef082fec3f20e03e517 [2018-09-11 19:30:15,084 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 19:30:15,088 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 19:30:15,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 19:30:15,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 19:30:15,101 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 19:30:15,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:30:15" (1/1) ... [2018-09-11 19:30:15,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6652310c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:15, skipping insertion in model container [2018-09-11 19:30:15,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:30:15" (1/1) ... [2018-09-11 19:30:15,291 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 19:30:15,343 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 19:30:15,365 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 19:30:15,379 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 19:30:15,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:15 WrapperNode [2018-09-11 19:30:15,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 19:30:15,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 19:30:15,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 19:30:15,398 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 19:30:15,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:15" (1/1) ... [2018-09-11 19:30:15,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:15" (1/1) ... [2018-09-11 19:30:15,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 19:30:15,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 19:30:15,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 19:30:15,424 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 19:30:15,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:15" (1/1) ... [2018-09-11 19:30:15,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:15" (1/1) ... [2018-09-11 19:30:15,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:15" (1/1) ... [2018-09-11 19:30:15,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:15" (1/1) ... [2018-09-11 19:30:15,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:15" (1/1) ... [2018-09-11 19:30:15,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:15" (1/1) ... [2018-09-11 19:30:15,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:15" (1/1) ... [2018-09-11 19:30:15,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 19:30:15,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 19:30:15,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 19:30:15,462 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 19:30:15,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:15" (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 19:30:15,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 19:30:15,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 19:30:15,527 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_sum_array_true_unreach_call_i____VERIFIER_assert [2018-09-11 19:30:15,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_sum_array_true_unreach_call_i____VERIFIER_assert [2018-09-11 19:30:15,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 19:30:15,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 19:30:15,527 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 19:30:15,528 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 19:30:15,988 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 19:30:15,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:30:15 BoogieIcfgContainer [2018-09-11 19:30:15,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 19:30:15,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 19:30:15,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 19:30:15,994 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 19:30:15,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 07:30:15" (1/3) ... [2018-09-11 19:30:15,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71bf2156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:30:15, skipping insertion in model container [2018-09-11 19:30:15,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:15" (2/3) ... [2018-09-11 19:30:15,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71bf2156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:30:15, skipping insertion in model container [2018-09-11 19:30:15,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:30:15" (3/3) ... [2018-09-11 19:30:15,998 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_array_true-unreach-call.i [2018-09-11 19:30:16,008 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 19:30:16,016 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 19:30:16,061 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 19:30:16,062 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 19:30:16,062 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 19:30:16,062 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 19:30:16,062 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 19:30:16,062 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 19:30:16,063 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 19:30:16,063 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 19:30:16,063 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 19:30:16,081 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-09-11 19:30:16,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-11 19:30:16,088 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:30:16,089 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 19:30:16,090 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_sum_array_true_unreach_call_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:30:16,095 INFO L82 PathProgramCache]: Analyzing trace with hash -426515113, now seen corresponding path program 1 times [2018-09-11 19:30:16,098 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:30:16,099 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2018-09-11 19:30:16,101 INFO L202 CegarAbsIntRunner]: [0], [1], [4], [6], [15], [32], [34], [51], [53], [66], [68], [72], [77], [85], [86], [87], [89] [2018-09-11 19:30:16,156 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:30:16,156 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:30:16,196 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:30:16,197 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 6 variables. [2018-09-11 19:30:16,251 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:30:16,305 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 100% of their original sizes. [2018-09-11 19:30:16,305 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:30:16,307 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:30:16,308 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:30:16,308 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-11 19:30:16,309 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:30:16,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-11 19:30:16,319 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-11 19:30:16,319 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-11 19:30:16,321 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2018-09-11 19:30:16,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:30:16,344 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2018-09-11 19:30:16,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-11 19:30:16,346 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-09-11 19:30:16,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:30:16,354 INFO L225 Difference]: With dead ends: 57 [2018-09-11 19:30:16,354 INFO L226 Difference]: Without dead ends: 29 [2018-09-11 19:30:16,358 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-11 19:30:16,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-09-11 19:30:16,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-09-11 19:30:16,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-09-11 19:30:16,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2018-09-11 19:30:16,398 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 17 [2018-09-11 19:30:16,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:30:16,399 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2018-09-11 19:30:16,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-11 19:30:16,399 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2018-09-11 19:30:16,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-11 19:30:16,401 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:30:16,401 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] [2018-09-11 19:30:16,401 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_sum_array_true_unreach_call_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:30:16,402 INFO L82 PathProgramCache]: Analyzing trace with hash -637687685, now seen corresponding path program 1 times [2018-09-11 19:30:16,402 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:30:16,402 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-09-11 19:30:16,402 INFO L202 CegarAbsIntRunner]: [0], [1], [4], [6], [15], [19], [22], [34], [38], [41], [53], [57], [60], [68], [72], [77], [85], [86], [87], [89] [2018-09-11 19:30:16,404 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:30:16,405 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:30:16,434 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown