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_INTCON-OldIcfg.epf -i ../../../trunk/examples/svcomp/loops/count_up_down_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 23:43:56,712 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 23:43:56,714 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 23:43:56,727 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 23:43:56,727 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 23:43:56,728 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 23:43:56,729 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 23:43:56,731 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 23:43:56,733 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 23:43:56,734 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 23:43:56,735 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 23:43:56,735 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 23:43:56,736 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 23:43:56,737 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 23:43:56,738 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 23:43:56,739 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 23:43:56,740 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 23:43:56,742 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 23:43:56,745 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 23:43:56,746 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 23:43:56,748 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 23:43:56,749 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 23:43:56,752 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 23:43:56,752 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 23:43:56,752 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 23:43:56,753 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 23:43:56,754 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 23:43:56,755 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 23:43:56,756 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 23:43:56,758 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 23:43:56,758 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 23:43:56,759 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 23:43:56,759 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 23:43:56,759 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 23:43:56,761 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 23:43:56,762 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 23:43:56,762 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf [2018-09-11 23:43:56,779 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 23:43:56,779 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 23:43:56,780 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 23:43:56,780 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 23:43:56,781 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 23:43:56,781 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 23:43:56,781 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 23:43:56,781 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-11 23:43:56,782 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-11 23:43:56,782 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 23:43:56,782 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 23:43:56,783 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 23:43:56,783 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 23:43:56,786 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 23:43:56,787 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 23:43:56,787 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 23:43:56,787 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 23:43:56,787 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 23:43:56,787 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 23:43:56,788 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 23:43:56,788 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 23:43:56,788 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 23:43:56,788 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 23:43:56,789 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 23:43:56,790 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 23:43:56,790 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 23:43:56,790 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 23:43:56,791 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 23:43:56,791 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 23:43:56,791 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 23:43:56,792 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 23:43:56,792 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 23:43:56,792 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 23:43:56,862 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 23:43:56,878 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 23:43:56,882 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 23:43:56,884 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 23:43:56,884 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 23:43:56,885 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/count_up_down_true-unreach-call_true-termination.i [2018-09-11 23:43:57,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c25943909/0022e2853fae44c2b98ecaba1f913e0c/FLAG7bf0b0ed6 [2018-09-11 23:43:57,426 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 23:43:57,427 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/count_up_down_true-unreach-call_true-termination.i [2018-09-11 23:43:57,434 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c25943909/0022e2853fae44c2b98ecaba1f913e0c/FLAG7bf0b0ed6 [2018-09-11 23:43:57,457 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c25943909/0022e2853fae44c2b98ecaba1f913e0c [2018-09-11 23:43:57,471 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 23:43:57,475 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 23:43:57,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 23:43:57,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 23:43:57,488 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 23:43:57,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:43:57" (1/1) ... [2018-09-11 23:43:57,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42b2b258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:57, skipping insertion in model container [2018-09-11 23:43:57,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:43:57" (1/1) ... [2018-09-11 23:43:57,682 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 23:43:57,719 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 23:43:57,737 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 23:43:57,742 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 23:43:57,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:57 WrapperNode [2018-09-11 23:43:57,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 23:43:57,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 23:43:57,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 23:43:57,756 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 23:43:57,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:57" (1/1) ... [2018-09-11 23:43:57,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:57" (1/1) ... [2018-09-11 23:43:57,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 23:43:57,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 23:43:57,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 23:43:57,778 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 23:43:57,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:57" (1/1) ... [2018-09-11 23:43:57,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:57" (1/1) ... [2018-09-11 23:43:57,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:57" (1/1) ... [2018-09-11 23:43:57,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:57" (1/1) ... [2018-09-11 23:43:57,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:57" (1/1) ... [2018-09-11 23:43:57,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:57" (1/1) ... [2018-09-11 23:43:57,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:57" (1/1) ... [2018-09-11 23:43:57,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 23:43:57,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 23:43:57,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 23:43:57,803 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 23:43:57,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:57" (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 23:43:57,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 23:43:57,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 23:43:57,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 23:43:57,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 23:43:57,879 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 23:43:57,879 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 23:43:57,879 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_count_up_down_true_unreach_call_true_termination_i____VERIFIER_assert [2018-09-11 23:43:57,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_count_up_down_true_unreach_call_true_termination_i____VERIFIER_assert [2018-09-11 23:43:58,130 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 23:43:58,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:43:58 BoogieIcfgContainer [2018-09-11 23:43:58,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 23:43:58,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 23:43:58,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 23:43:58,135 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 23:43:58,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:43:57" (1/3) ... [2018-09-11 23:43:58,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fac1b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:43:58, skipping insertion in model container [2018-09-11 23:43:58,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:43:57" (2/3) ... [2018-09-11 23:43:58,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fac1b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:43:58, skipping insertion in model container [2018-09-11 23:43:58,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:43:58" (3/3) ... [2018-09-11 23:43:58,139 INFO L112 eAbstractionObserver]: Analyzing ICFG count_up_down_true-unreach-call_true-termination.i [2018-09-11 23:43:58,149 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 23:43:58,157 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 23:43:58,205 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 23:43:58,205 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 23:43:58,205 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 23:43:58,206 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 23:43:58,206 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 23:43:58,206 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 23:43:58,206 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 23:43:58,206 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 23:43:58,206 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 23:43:58,226 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-09-11 23:43:58,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-11 23:43:58,234 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 23:43:58,235 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 23:43:58,236 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_count_up_down_true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 23:43:58,244 INFO L82 PathProgramCache]: Analyzing trace with hash -10373566, now seen corresponding path program 1 times [2018-09-11 23:43:58,247 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 23:43:58,248 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 11 with the following transitions: [2018-09-11 23:43:58,251 INFO L202 CegarAbsIntRunner]: [0], [4], [16], [20], [23], [25], [31], [32], [33], [35] [2018-09-11 23:43:58,292 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-11 23:43:58,293 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 23:43:58,360 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 23:43:58,362 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 4 variables. [2018-09-11 23:43:58,400 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 23:43:58,463 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-11 23:43:58,463 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 23:43:58,501 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 23:43:58,502 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 23:43:58,503 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-11 23:43:58,503 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 23:43:58,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-11 23:43:58,524 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-11 23:43:58,524 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-11 23:43:58,533 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2018-09-11 23:43:58,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 23:43:58,582 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2018-09-11 23:43:58,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-11 23:43:58,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-09-11 23:43:58,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 23:43:58,595 INFO L225 Difference]: With dead ends: 34 [2018-09-11 23:43:58,595 INFO L226 Difference]: Without dead ends: 15 [2018-09-11 23:43:58,599 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 9 GetRequests, 8 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 23:43:58,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-09-11 23:43:58,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2018-09-11 23:43:58,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-09-11 23:43:58,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-09-11 23:43:58,642 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-09-11 23:43:58,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 23:43:58,642 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-09-11 23:43:58,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-11 23:43:58,643 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-09-11 23:43:58,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-11 23:43:58,643 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 23:43:58,644 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 23:43:58,644 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_count_up_down_true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 23:43:58,644 INFO L82 PathProgramCache]: Analyzing trace with hash -571410792, now seen corresponding path program 1 times [2018-09-11 23:43:58,645 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 23:43:58,645 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-09-11 23:43:58,645 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [20], [23], [25], [31], [32], [33], [35] [2018-09-11 23:43:58,647 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-09-11 23:43:58,647 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 23:43:58,663 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