java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-acceleration/array_true-unreach-call4_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 19:35:14,544 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 19:35:14,546 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 19:35:14,558 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 19:35:14,559 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 19:35:14,560 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 19:35:14,561 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 19:35:14,563 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 19:35:14,564 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 19:35:14,565 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 19:35:14,566 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 19:35:14,566 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 19:35:14,567 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 19:35:14,568 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 19:35:14,569 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 19:35:14,570 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 19:35:14,571 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 19:35:14,573 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 19:35:14,575 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 19:35:14,576 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 19:35:14,577 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 19:35:14,578 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 19:35:14,581 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 19:35:14,581 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 19:35:14,582 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 19:35:14,582 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 19:35:14,583 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 19:35:14,584 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 19:35:14,585 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 19:35:14,586 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 19:35:14,586 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 19:35:14,587 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 19:35:14,587 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 19:35:14,588 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 19:35:14,589 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 19:35:14,590 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 19:35:14,590 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 19:35:14,606 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 19:35:14,606 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 19:35:14,607 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 19:35:14,607 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 19:35:14,607 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 19:35:14,607 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 19:35:14,608 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-11 19:35:14,608 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 19:35:14,608 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-11 19:35:14,608 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 19:35:14,608 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 19:35:14,609 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 19:35:14,609 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 19:35:14,609 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 19:35:14,610 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 19:35:14,610 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 19:35:14,610 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 19:35:14,610 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 19:35:14,610 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 19:35:14,610 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 19:35:14,611 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 19:35:14,611 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 19:35:14,611 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 19:35:14,611 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 19:35:14,611 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 19:35:14,612 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 19:35:14,612 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 19:35:14,612 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 19:35:14,612 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 19:35:14,612 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 19:35:14,613 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 19:35:14,613 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 19:35:14,613 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 19:35:14,613 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 19:35:14,670 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 19:35:14,685 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 19:35:14,689 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 19:35:14,690 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 19:35:14,690 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 19:35:14,691 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_true-unreach-call4_true-termination.i [2018-09-11 19:35:15,018 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29622c520/7eac7b8b52b3469499dc4aa1bb4199cf/FLAGf665b7aab [2018-09-11 19:35:15,237 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 19:35:15,238 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_true-unreach-call4_true-termination.i [2018-09-11 19:35:15,243 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29622c520/7eac7b8b52b3469499dc4aa1bb4199cf/FLAGf665b7aab [2018-09-11 19:35:15,259 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29622c520/7eac7b8b52b3469499dc4aa1bb4199cf [2018-09-11 19:35:15,270 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 19:35:15,273 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 19:35:15,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 19:35:15,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 19:35:15,281 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 19:35:15,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:35:15" (1/1) ... [2018-09-11 19:35:15,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fc2c2f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:15, skipping insertion in model container [2018-09-11 19:35:15,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:35:15" (1/1) ... [2018-09-11 19:35:15,435 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 19:35:15,469 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 19:35:15,486 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 19:35:15,492 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 19:35:15,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:15 WrapperNode [2018-09-11 19:35:15,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 19:35:15,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 19:35:15,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 19:35:15,506 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 19:35:15,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:15" (1/1) ... [2018-09-11 19:35:15,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:15" (1/1) ... [2018-09-11 19:35:15,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 19:35:15,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 19:35:15,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 19:35:15,528 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 19:35:15,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:15" (1/1) ... [2018-09-11 19:35:15,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:15" (1/1) ... [2018-09-11 19:35:15,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:15" (1/1) ... [2018-09-11 19:35:15,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:15" (1/1) ... [2018-09-11 19:35:15,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:15" (1/1) ... [2018-09-11 19:35:15,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:15" (1/1) ... [2018-09-11 19:35:15,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:15" (1/1) ... [2018-09-11 19:35:15,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 19:35:15,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 19:35:15,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 19:35:15,555 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 19:35:15,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:15" (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 19:35:15,615 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 19:35:15,615 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 19:35:15,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 19:35:15,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 19:35:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 19:35:15,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 19:35:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 19:35:15,616 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 19:35:15,914 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 19:35:15,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:35:15 BoogieIcfgContainer [2018-09-11 19:35:15,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 19:35:15,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 19:35:15,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 19:35:15,932 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 19:35:15,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 07:35:15" (1/3) ... [2018-09-11 19:35:15,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bcdeb3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:35:15, skipping insertion in model container [2018-09-11 19:35:15,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:15" (2/3) ... [2018-09-11 19:35:15,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bcdeb3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:35:15, skipping insertion in model container [2018-09-11 19:35:15,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:35:15" (3/3) ... [2018-09-11 19:35:15,939 INFO L112 eAbstractionObserver]: Analyzing ICFG array_true-unreach-call4_true-termination.i [2018-09-11 19:35:15,961 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 19:35:15,976 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 19:35:16,034 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 19:35:16,035 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 19:35:16,035 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 19:35:16,035 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 19:35:16,035 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 19:35:16,035 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 19:35:16,036 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 19:35:16,036 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 19:35:16,036 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 19:35:16,061 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-09-11 19:35:16,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-11 19:35:16,067 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:35:16,067 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:35:16,068 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 19:35:16,074 INFO L82 PathProgramCache]: Analyzing trace with hash 31008519, now seen corresponding path program 1 times [2018-09-11 19:35:16,077 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:35:16,078 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2018-09-11 19:35:16,082 INFO L202 CegarAbsIntRunner]: [0], [3], [5], [11], [15], [28], [30], [43], [47], [48], [49], [51] [2018-09-11 19:35:16,135 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:35:16,135 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:35:16,172 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:35:16,173 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 19:35:16,183 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:35:16,224 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 100% of their original sizes. [2018-09-11 19:35:16,225 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:35:16,227 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:35:16,228 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:35:16,228 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-11 19:35:16,229 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:35:16,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-11 19:35:16,244 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-11 19:35:16,245 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-11 19:35:16,247 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2018-09-11 19:35:16,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:35:16,266 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2018-09-11 19:35:16,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-11 19:35:16,268 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-09-11 19:35:16,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:35:16,276 INFO L225 Difference]: With dead ends: 38 [2018-09-11 19:35:16,276 INFO L226 Difference]: Without dead ends: 17 [2018-09-11 19:35:16,279 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 11 GetRequests, 11 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 19:35:16,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-09-11 19:35:16,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-09-11 19:35:16,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-09-11 19:35:16,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-09-11 19:35:16,324 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2018-09-11 19:35:16,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:35:16,325 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-09-11 19:35:16,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-11 19:35:16,325 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-09-11 19:35:16,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-11 19:35:16,326 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:35:16,326 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:35:16,327 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 19:35:16,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1339690116, now seen corresponding path program 1 times [2018-09-11 19:35:16,328 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:35:16,328 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-11 19:35:16,328 INFO L202 CegarAbsIntRunner]: [0], [3], [5], [11], [15], [19], [22], [30], [34], [37], [47], [48], [49], [51] [2018-09-11 19:35:16,332 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:35:16,332 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:35:16,336 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:35:16,337 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 19:35:16,369 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:35:16,379 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-11 19:35:16,379 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:35:16,390 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:35:16,390 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:35:16,390 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-11 19:35:16,390 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:35:16,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-11 19:35:16,392 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-11 19:35:16,392 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-11 19:35:16,392 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 3 states. [2018-09-11 19:35:16,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:35:16,495 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2018-09-11 19:35:16,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-11 19:35:16,496 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-09-11 19:35:16,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:35:16,499 INFO L225 Difference]: With dead ends: 33 [2018-09-11 19:35:16,500 INFO L226 Difference]: Without dead ends: 24 [2018-09-11 19:35:16,501 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 13 GetRequests, 12 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 19:35:16,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-09-11 19:35:16,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2018-09-11 19:35:16,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-11 19:35:16,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-09-11 19:35:16,507 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2018-09-11 19:35:16,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:35:16,508 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-09-11 19:35:16,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-11 19:35:16,508 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-09-11 19:35:16,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-11 19:35:16,509 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:35:16,509 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:35:16,509 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 19:35:16,510 INFO L82 PathProgramCache]: Analyzing trace with hash 133102409, now seen corresponding path program 1 times [2018-09-11 19:35:16,510 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:35:16,510 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2018-09-11 19:35:16,511 INFO L202 CegarAbsIntRunner]: [0], [3], [5], [11], [15], [19], [22], [24], [26], [30], [34], [37], [47], [48], [49], [51] [2018-09-11 19:35:16,512 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:35:16,513 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:35:16,570 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:35:16,571 INFO L272 AbstractInterpreter]: Visited 15 different actions 43 times. Merged at 3 different actions 21 times. Widened at 1 different actions 3 times. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-09-11 19:35:16,579 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:35:16,600 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 75% of their original sizes. [2018-09-11 19:35:16,600 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:35:16,687 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:35:16,688 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:35:16,688 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-11 19:35:16,688 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:35:16,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-11 19:35:16,688 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-11 19:35:16,689 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-09-11 19:35:16,689 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 7 states. [2018-09-11 19:35:16,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:35:16,961 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2018-09-11 19:35:16,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-11 19:35:16,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2018-09-11 19:35:16,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:35:16,963 INFO L225 Difference]: With dead ends: 45 [2018-09-11 19:35:16,963 INFO L226 Difference]: Without dead ends: 31 [2018-09-11 19:35:16,963 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-09-11 19:35:16,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-11 19:35:16,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2018-09-11 19:35:16,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-09-11 19:35:16,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2018-09-11 19:35:16,970 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 17 [2018-09-11 19:35:16,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:35:16,971 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2018-09-11 19:35:16,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-11 19:35:16,971 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2018-09-11 19:35:16,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-09-11 19:35:16,972 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:35:16,972 INFO L376 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:35:16,972 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__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 19:35:16,973 INFO L82 PathProgramCache]: Analyzing trace with hash 824910604, now seen corresponding path program 1 times [2018-09-11 19:35:16,973 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:35:16,973 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 30 with the following transitions: [2018-09-11 19:35:16,973 INFO L202 CegarAbsIntRunner]: [0], [3], [5], [11], [15], [19], [22], [24], [26], [30], [34], [37], [39], [41], [47], [48], [49], [51] [2018-09-11 19:35:16,975 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:35:16,975 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown