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_INT-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-acceleration/array_true-unreach-call1_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 13:16:05,003 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 13:16:05,005 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 13:16:05,024 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 13:16:05,025 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 13:16:05,026 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 13:16:05,028 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 13:16:05,031 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 13:16:05,033 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 13:16:05,034 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 13:16:05,037 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 13:16:05,037 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 13:16:05,038 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 13:16:05,039 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 13:16:05,041 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 13:16:05,042 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 13:16:05,045 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 13:16:05,049 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 13:16:05,058 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 13:16:05,060 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 13:16:05,061 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 13:16:05,062 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 13:16:05,065 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 13:16:05,065 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 13:16:05,066 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 13:16:05,067 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 13:16:05,067 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 13:16:05,068 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 13:16:05,069 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 13:16:05,070 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 13:16:05,071 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 13:16:05,071 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 13:16:05,072 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 13:16:05,072 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 13:16:05,073 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 13:16:05,074 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 13:16:05,074 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf [2018-09-11 13:16:05,104 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 13:16:05,105 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 13:16:05,106 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 13:16:05,106 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 13:16:05,106 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 13:16:05,106 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 13:16:05,109 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-11 13:16:05,109 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 13:16:05,110 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-11 13:16:05,110 INFO L133 SettingsManager]: * Abstract domain=IntervalDomain [2018-09-11 13:16:05,110 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 13:16:05,110 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 13:16:05,111 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 13:16:05,111 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 13:16:05,111 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 13:16:05,112 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 13:16:05,112 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 13:16:05,112 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 13:16:05,112 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 13:16:05,113 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 13:16:05,114 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 13:16:05,114 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 13:16:05,114 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 13:16:05,114 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 13:16:05,115 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 13:16:05,115 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 13:16:05,115 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 13:16:05,115 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 13:16:05,116 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 13:16:05,116 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 13:16:05,116 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 13:16:05,116 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 13:16:05,117 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 13:16:05,117 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 13:16:05,183 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 13:16:05,196 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 13:16:05,200 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 13:16:05,202 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 13:16:05,203 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 13:16:05,204 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_true-unreach-call1_true-termination.i [2018-09-11 13:16:05,548 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdfb605b6/185f00843a0c4aca8f42a60be88fef67/FLAGa5f25917d [2018-09-11 13:16:05,698 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 13:16:05,699 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_true-unreach-call1_true-termination.i [2018-09-11 13:16:05,706 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdfb605b6/185f00843a0c4aca8f42a60be88fef67/FLAGa5f25917d [2018-09-11 13:16:05,724 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdfb605b6/185f00843a0c4aca8f42a60be88fef67 [2018-09-11 13:16:05,734 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 13:16:05,737 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 13:16:05,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 13:16:05,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 13:16:05,749 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 13:16:05,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 01:16:05" (1/1) ... [2018-09-11 13:16:05,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d19d494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:16:05, skipping insertion in model container [2018-09-11 13:16:05,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 01:16:05" (1/1) ... [2018-09-11 13:16:05,926 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 13:16:05,972 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 13:16:05,990 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 13:16:05,994 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 13:16:06,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:16:06 WrapperNode [2018-09-11 13:16:06,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 13:16:06,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 13:16:06,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 13:16:06,009 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 13:16:06,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:16:06" (1/1) ... [2018-09-11 13:16:06,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:16:06" (1/1) ... [2018-09-11 13:16:06,030 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 13:16:06,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 13:16:06,030 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 13:16:06,030 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 13:16:06,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:16:06" (1/1) ... [2018-09-11 13:16:06,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:16:06" (1/1) ... [2018-09-11 13:16:06,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:16:06" (1/1) ... [2018-09-11 13:16:06,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:16:06" (1/1) ... [2018-09-11 13:16:06,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:16:06" (1/1) ... [2018-09-11 13:16:06,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:16:06" (1/1) ... [2018-09-11 13:16:06,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:16:06" (1/1) ... [2018-09-11 13:16:06,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 13:16:06,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 13:16:06,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 13:16:06,049 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 13:16:06,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:16:06" (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 13:16:06,115 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_array_true_unreach_call__true_termination_i____VERIFIER_assert [2018-09-11 13:16:06,115 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_array_true_unreach_call__true_termination_i____VERIFIER_assert [2018-09-11 13:16:06,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 13:16:06,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 13:16:06,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 13:16:06,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 13:16:06,116 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 13:16:06,116 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 13:16:06,361 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 13:16:06,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 01:16:06 BoogieIcfgContainer [2018-09-11 13:16:06,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 13:16:06,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 13:16:06,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 13:16:06,366 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 13:16:06,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 01:16:05" (1/3) ... [2018-09-11 13:16:06,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2064520a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 01:16:06, skipping insertion in model container [2018-09-11 13:16:06,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:16:06" (2/3) ... [2018-09-11 13:16:06,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2064520a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 01:16:06, skipping insertion in model container [2018-09-11 13:16:06,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 01:16:06" (3/3) ... [2018-09-11 13:16:06,370 INFO L112 eAbstractionObserver]: Analyzing ICFG array_true-unreach-call1_true-termination.i [2018-09-11 13:16:06,380 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 13:16:06,387 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 13:16:06,430 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 13:16:06,431 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 13:16:06,431 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 13:16:06,431 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 13:16:06,431 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 13:16:06,431 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 13:16:06,431 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 13:16:06,431 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 13:16:06,432 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 13:16:06,447 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-09-11 13:16:06,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-11 13:16:06,454 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 13:16:06,455 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 13:16:06,456 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_array_true_unreach_call__true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 13:16:06,462 INFO L82 PathProgramCache]: Analyzing trace with hash 47309880, now seen corresponding path program 1 times [2018-09-11 13:16:06,464 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 13:16:06,466 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 11 with the following transitions: [2018-09-11 13:16:06,468 INFO L202 CegarAbsIntRunner]: [0], [3], [5], [11], [15], [28], [32], [33], [34], [36] [2018-09-11 13:16:06,502 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-11 13:16:06,502 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 13:16:06,559 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 13:16:06,560 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 2 variables. [2018-09-11 13:16:06,576 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 13:16:06,619 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 100% of their original sizes. [2018-09-11 13:16:06,620 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 13:16:06,622 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 13:16:06,623 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 13:16:06,623 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-11 13:16:06,624 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 13:16:06,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-11 13:16:06,636 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-11 13:16:06,637 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-11 13:16:06,640 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-09-11 13:16:06,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 13:16:06,672 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2018-09-11 13:16:06,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-11 13:16:06,673 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-09-11 13:16:06,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 13:16:06,687 INFO L225 Difference]: With dead ends: 30 [2018-09-11 13:16:06,688 INFO L226 Difference]: Without dead ends: 13 [2018-09-11 13:16:06,692 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 9 GetRequests, 9 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 13:16:06,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-11 13:16:06,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-09-11 13:16:06,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-09-11 13:16:06,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-09-11 13:16:06,750 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-09-11 13:16:06,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 13:16:06,750 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-09-11 13:16:06,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-11 13:16:06,751 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-09-11 13:16:06,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-11 13:16:06,751 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 13:16:06,751 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 13:16:06,752 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_array_true_unreach_call__true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 13:16:06,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1197084163, now seen corresponding path program 1 times [2018-09-11 13:16:06,756 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 13:16:06,756 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-09-11 13:16:06,756 INFO L202 CegarAbsIntRunner]: [0], [3], [5], [11], [15], [19], [22], [32], [33], [34], [36] [2018-09-11 13:16:06,758 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-11 13:16:06,758 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 13:16:06,793 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 13:16:06,794 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 2 variables. [2018-09-11 13:16:06,862 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 13:16:06,871 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-11 13:16:06,872 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 13:16:06,881 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 13:16:06,882 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 13:16:06,882 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-11 13:16:06,882 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 13:16:06,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-11 13:16:06,883 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-11 13:16:06,884 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-11 13:16:06,884 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2018-09-11 13:16:06,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 13:16:06,919 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-09-11 13:16:06,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-11 13:16:06,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-09-11 13:16:06,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 13:16:06,920 INFO L225 Difference]: With dead ends: 21 [2018-09-11 13:16:06,920 INFO L226 Difference]: Without dead ends: 16 [2018-09-11 13:16:06,922 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-11 13:16:06,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-09-11 13:16:06,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2018-09-11 13:16:06,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-09-11 13:16:06,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-09-11 13:16:06,927 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2018-09-11 13:16:06,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 13:16:06,927 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-09-11 13:16:06,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-11 13:16:06,928 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-09-11 13:16:06,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-11 13:16:06,928 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 13:16:06,929 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 13:16:06,929 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_array_true_unreach_call__true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 13:16:06,929 INFO L82 PathProgramCache]: Analyzing trace with hash 688816788, now seen corresponding path program 1 times [2018-09-11 13:16:06,929 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 13:16:06,930 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-11 13:16:06,930 INFO L202 CegarAbsIntRunner]: [0], [3], [5], [11], [15], [19], [22], [24], [26], [32], [33], [34], [36] [2018-09-11 13:16:06,931 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-11 13:16:06,931 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown