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_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-acceleration/underapprox_true-unreach-call1_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 09:23:02,678 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 09:23:02,680 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 09:23:02,696 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 09:23:02,696 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 09:23:02,698 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 09:23:02,700 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 09:23:02,703 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 09:23:02,705 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 09:23:02,708 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 09:23:02,709 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 09:23:02,709 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 09:23:02,712 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 09:23:02,713 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 09:23:02,714 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 09:23:02,723 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 09:23:02,724 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 09:23:02,726 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 09:23:02,731 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 09:23:02,734 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 09:23:02,735 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 09:23:02,738 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 09:23:02,745 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-15 09:23:02,760 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf [2018-09-15 09:23:02,793 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 09:23:02,793 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 09:23:02,794 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 09:23:02,794 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 09:23:02,794 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 09:23:02,795 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 09:23:02,795 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 09:23:02,795 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-15 09:23:02,795 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 09:23:02,796 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 09:23:02,796 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-15 09:23:02,797 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 09:23:02,797 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 09:23:02,797 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 09:23:02,797 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 09:23:02,798 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 09:23:02,798 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 09:23:02,798 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 09:23:02,798 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 09:23:02,799 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 09:23:02,799 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 09:23:02,799 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 09:23:02,799 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 09:23:02,801 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 09:23:02,801 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 09:23:02,801 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 09:23:02,802 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 09:23:02,802 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 09:23:02,802 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 09:23:02,802 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 09:23:02,802 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 09:23:02,803 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 09:23:02,803 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 09:23:02,862 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 09:23:02,875 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 09:23:02,881 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 09:23:02,883 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 09:23:02,884 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 09:23:02,885 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_true-unreach-call1_true-termination.i [2018-09-15 09:23:03,258 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70d47df57/d0bb14cfe1bb40aa9a82672a7fff2e6b/FLAGd2b8ac73a [2018-09-15 09:23:03,421 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 09:23:03,421 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_true-unreach-call1_true-termination.i [2018-09-15 09:23:03,426 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70d47df57/d0bb14cfe1bb40aa9a82672a7fff2e6b/FLAGd2b8ac73a [2018-09-15 09:23:03,443 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70d47df57/d0bb14cfe1bb40aa9a82672a7fff2e6b [2018-09-15 09:23:03,457 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 09:23:03,460 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 09:23:03,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 09:23:03,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 09:23:03,468 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 09:23:03,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 09:23:03" (1/1) ... [2018-09-15 09:23:03,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e85618f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:23:03, skipping insertion in model container [2018-09-15 09:23:03,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 09:23:03" (1/1) ... [2018-09-15 09:23:03,485 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 09:23:03,681 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 09:23:03,698 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 09:23:03,702 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 09:23:03,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:23:03 WrapperNode [2018-09-15 09:23:03,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 09:23:03,718 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 09:23:03,718 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 09:23:03,718 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 09:23:03,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:23:03" (1/1) ... [2018-09-15 09:23:03,735 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:23:03" (1/1) ... [2018-09-15 09:23:03,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 09:23:03,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 09:23:03,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 09:23:03,743 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 09:23:03,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:23:03" (1/1) ... [2018-09-15 09:23:03,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:23:03" (1/1) ... [2018-09-15 09:23:03,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:23:03" (1/1) ... [2018-09-15 09:23:03,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:23:03" (1/1) ... [2018-09-15 09:23:03,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:23:03" (1/1) ... [2018-09-15 09:23:03,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:23:03" (1/1) ... [2018-09-15 09:23:03,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:23:03" (1/1) ... [2018-09-15 09:23:03,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 09:23:03,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 09:23:03,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 09:23:03,779 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 09:23:03,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:23:03" (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 [2018-09-15 09:23:03,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 09:23:03,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 09:23:03,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 09:23:03,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 09:23:03,840 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 09:23:03,840 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 09:23:03,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-15 09:23:03,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-15 09:23:04,113 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 09:23:04,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 09:23:04 BoogieIcfgContainer [2018-09-15 09:23:04,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 09:23:04,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 09:23:04,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 09:23:04,119 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 09:23:04,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 09:23:03" (1/3) ... [2018-09-15 09:23:04,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494f620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 09:23:04, skipping insertion in model container [2018-09-15 09:23:04,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 09:23:03" (2/3) ... [2018-09-15 09:23:04,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494f620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 09:23:04, skipping insertion in model container [2018-09-15 09:23:04,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 09:23:04" (3/3) ... [2018-09-15 09:23:04,123 INFO L112 eAbstractionObserver]: Analyzing ICFG underapprox_true-unreach-call1_true-termination.i [2018-09-15 09:23:04,132 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 09:23:04,139 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 09:23:04,183 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 09:23:04,183 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 09:23:04,184 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 09:23:04,184 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 09:23:04,184 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 09:23:04,184 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 09:23:04,184 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 09:23:04,184 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 09:23:04,184 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 09:23:04,201 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-09-15 09:23:04,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-15 09:23:04,207 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 09:23:04,208 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 09:23:04,209 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 09:23:04,214 INFO L82 PathProgramCache]: Analyzing trace with hash -10373566, now seen corresponding path program 1 times [2018-09-15 09:23:04,217 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 09:23:04,218 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 11 with the following transitions: [2018-09-15 09:23:04,220 INFO L202 CegarAbsIntRunner]: [0], [4], [16], [20], [23], [25], [31], [32], [33], [35] [2018-09-15 09:23:04,281 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-15 09:23:04,282 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 09:23:04,356 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 09:23:04,358 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 2 variables. [2018-09-15 09:23:04,388 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 09:23:04,442 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 50% of their original sizes. [2018-09-15 09:23:04,442 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 09:23:04,467 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 09:23:04,470 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 09:23:04,470 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-15 09:23:04,470 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 09:23:04,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-15 09:23:04,490 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-15 09:23:04,491 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 09:23:04,495 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2018-09-15 09:23:04,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 09:23:04,567 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2018-09-15 09:23:04,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-15 09:23:04,570 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-09-15 09:23:04,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 09:23:04,581 INFO L225 Difference]: With dead ends: 34 [2018-09-15 09:23:04,582 INFO L226 Difference]: Without dead ends: 15 [2018-09-15 09:23:04,585 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 [2018-09-15 09:23:04,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-09-15 09:23:04,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2018-09-15 09:23:04,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-09-15 09:23:04,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-09-15 09:23:04,632 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-09-15 09:23:04,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 09:23:04,632 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-09-15 09:23:04,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-15 09:23:04,633 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-09-15 09:23:04,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-15 09:23:04,634 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 09:23:04,634 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 09:23:04,634 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 09:23:04,635 INFO L82 PathProgramCache]: Analyzing trace with hash -571410792, now seen corresponding path program 1 times [2018-09-15 09:23:04,635 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 09:23:04,635 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-09-15 09:23:04,636 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [20], [23], [25], [31], [32], [33], [35] [2018-09-15 09:23:04,638 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-15 09:23:04,638 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 09:23:04,649 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 09:23:04,650 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 2 variables. [2018-09-15 09:23:04,677 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 09:23:04,695 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-15 09:23:04,696 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 09:23:04,709 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 09:23:04,710 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 09:23:04,710 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-15 09:23:04,710 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 09:23:04,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-15 09:23:04,711 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-15 09:23:04,711 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 09:23:04,712 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-09-15 09:23:04,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 09:23:04,742 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-09-15 09:23:04,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-15 09:23:04,743 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-09-15 09:23:04,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 09:23:04,744 INFO L225 Difference]: With dead ends: 19 [2018-09-15 09:23:04,744 INFO L226 Difference]: Without dead ends: 14 [2018-09-15 09:23:04,745 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 [2018-09-15 09:23:04,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-09-15 09:23:04,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-09-15 09:23:04,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-15 09:23:04,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-09-15 09:23:04,752 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-09-15 09:23:04,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 09:23:04,752 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-09-15 09:23:04,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-15 09:23:04,753 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-09-15 09:23:04,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-15 09:23:04,753 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 09:23:04,754 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 09:23:04,754 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 09:23:04,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1625028318, now seen corresponding path program 1 times [2018-09-15 09:23:04,755 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 09:23:04,755 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2018-09-15 09:23:04,755 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [20], [23], [25], [31], [32], [33], [35] [2018-09-15 09:23:04,757 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-15 09:23:04,757 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 09:23:04,778 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-15 09:23:05,246 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-15 09:23:05,247 INFO L272 AbstractInterpreter]: Visited 12 different actions 74 times. Merged at 3 different actions 28 times. Widened at 1 different actions 6 times. Found 1 fixpoints after 1 different actions. Largest state had 3 variables. [2018-09-15 09:23:05,294 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-15 09:23:05,318 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-15 09:23:05,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 09:23:05 BoogieIcfgContainer [2018-09-15 09:23:05,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-15 09:23:05,321 INFO L168 Benchmark]: Toolchain (without parser) took 1863.60 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.9 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -688.2 MB). Peak memory consumption was 32.7 MB. Max. memory is 7.1 GB. [2018-09-15 09:23:05,324 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 09:23:05,326 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-15 09:23:05,327 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 09:23:05,328 INFO L168 Benchmark]: Boogie Preprocessor took 35.48 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-15 09:23:05,329 INFO L168 Benchmark]: RCFGBuilder took 336.26 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -762.3 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2018-09-15 09:23:05,331 INFO L168 Benchmark]: TraceAbstraction took 1203.51 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 63.6 MB). Peak memory consumption was 63.6 MB. Max. memory is 7.1 GB. [2018-09-15 09:23:05,338 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 256.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 24.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.48 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 336.26 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -762.3 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1203.51 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 63.6 MB). Peak memory consumption was 63.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L9] unsigned int x = 0; [L10] unsigned int y = 1; [L11] COND TRUE x < 6 [L12] x++ [L12] x++ [L13] y *= 2 [L11] COND FALSE !(x < 6) [L15] CALL __VERIFIER_assert(y % 3) [L3] COND TRUE !(cond) [L4] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. UNKNOWN Result, 1.1s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 29 SDtfs, 3 SDslu, 25 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.7s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.42105263157894735 AbsIntAvgWeakeningVarsNumRemoved, 0.3684210526315789 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: No data available, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/underapprox_true-unreach-call1_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-15_09-23-05-359.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/underapprox_true-unreach-call1_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-15_09-23-05-359.csv Received shutdown request...