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-invgen/up_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 17:20:19,778 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 17:20:19,781 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 17:20:19,793 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 17:20:19,794 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 17:20:19,795 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 17:20:19,796 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 17:20:19,798 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 17:20:19,799 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 17:20:19,800 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 17:20:19,801 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 17:20:19,801 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 17:20:19,802 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 17:20:19,803 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 17:20:19,805 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 17:20:19,805 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 17:20:19,806 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 17:20:19,808 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 17:20:19,810 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 17:20:19,812 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 17:20:19,815 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 17:20:19,820 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 17:20:19,822 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-15 17:20:19,841 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 [2018-09-15 17:20:19,867 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 17:20:19,867 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 17:20:19,868 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 17:20:19,869 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 17:20:19,869 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 17:20:19,869 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 17:20:19,869 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-15 17:20:19,870 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 17:20:19,870 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-15 17:20:19,870 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 17:20:19,870 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 17:20:19,871 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-15 17:20:19,872 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 17:20:19,872 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 17:20:19,873 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 17:20:19,873 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 17:20:19,873 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 17:20:19,874 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 17:20:19,874 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 17:20:19,874 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 17:20:19,874 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 17:20:19,874 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 17:20:19,875 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 17:20:19,875 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 17:20:19,875 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 17:20:19,875 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 17:20:19,876 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 17:20:19,876 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 17:20:19,876 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 17:20:19,876 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 17:20:19,876 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 17:20:19,876 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 17:20:19,877 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 17:20:19,877 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 17:20:19,946 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 17:20:19,962 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 17:20:19,966 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 17:20:19,968 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 17:20:19,968 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 17:20:19,969 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/up_true-unreach-call_true-termination.i [2018-09-15 17:20:20,335 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec234b8ce/3a6892a4ee4847198ff3566274f9eb16/FLAG384e8c342 [2018-09-15 17:20:20,504 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 17:20:20,505 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/up_true-unreach-call_true-termination.i [2018-09-15 17:20:20,513 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec234b8ce/3a6892a4ee4847198ff3566274f9eb16/FLAG384e8c342 [2018-09-15 17:20:20,529 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec234b8ce/3a6892a4ee4847198ff3566274f9eb16 [2018-09-15 17:20:20,543 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 17:20:20,546 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 17:20:20,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 17:20:20,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 17:20:20,556 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 17:20:20,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 05:20:20" (1/1) ... [2018-09-15 17:20:20,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cf4e0c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:20, skipping insertion in model container [2018-09-15 17:20:20,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 05:20:20" (1/1) ... [2018-09-15 17:20:20,574 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 17:20:20,770 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 17:20:20,791 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 17:20:20,798 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 17:20:20,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:20 WrapperNode [2018-09-15 17:20:20,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 17:20:20,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 17:20:20,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 17:20:20,816 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 17:20:20,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:20" (1/1) ... [2018-09-15 17:20:20,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:20" (1/1) ... [2018-09-15 17:20:20,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 17:20:20,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 17:20:20,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 17:20:20,840 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 17:20:20,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:20" (1/1) ... [2018-09-15 17:20:20,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:20" (1/1) ... [2018-09-15 17:20:20,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:20" (1/1) ... [2018-09-15 17:20:20,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:20" (1/1) ... [2018-09-15 17:20:20,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:20" (1/1) ... [2018-09-15 17:20:20,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:20" (1/1) ... [2018-09-15 17:20:20,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:20" (1/1) ... [2018-09-15 17:20:20,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 17:20:20,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 17:20:20,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 17:20:20,868 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 17:20:20,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:20" (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 17:20:20,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 17:20:20,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 17:20:20,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 17:20:20,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 17:20:20,946 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 17:20:20,946 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 17:20:20,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-15 17:20:20,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-15 17:20:21,337 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 17:20:21,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 05:20:21 BoogieIcfgContainer [2018-09-15 17:20:21,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 17:20:21,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 17:20:21,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 17:20:21,343 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 17:20:21,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 05:20:20" (1/3) ... [2018-09-15 17:20:21,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c331b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 05:20:21, skipping insertion in model container [2018-09-15 17:20:21,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 05:20:20" (2/3) ... [2018-09-15 17:20:21,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32c331b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 05:20:21, skipping insertion in model container [2018-09-15 17:20:21,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 05:20:21" (3/3) ... [2018-09-15 17:20:21,347 INFO L112 eAbstractionObserver]: Analyzing ICFG up_true-unreach-call_true-termination.i [2018-09-15 17:20:21,359 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 17:20:21,367 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 17:20:21,423 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 17:20:21,424 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 17:20:21,424 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 17:20:21,424 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 17:20:21,425 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 17:20:21,425 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 17:20:21,425 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 17:20:21,425 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 17:20:21,425 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 17:20:21,446 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-09-15 17:20:21,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-15 17:20:21,453 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:21,455 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:21,457 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:21,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1884544245, now seen corresponding path program 1 times [2018-09-15 17:20:21,465 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:21,466 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2018-09-15 17:20:21,468 INFO L202 CegarAbsIntRunner]: [0], [4], [16], [18], [22], [28], [35], [38], [40], [46], [47], [48], [50] [2018-09-15 17:20:21,516 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:21,517 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:21,565 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:21,567 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 5 variables. [2018-09-15 17:20:21,583 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:21,629 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 33.33% of their original sizes. [2018-09-15 17:20:21,629 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:21,644 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:21,646 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:21,646 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-15 17:20:21,647 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:21,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-15 17:20:21,659 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-15 17:20:21,660 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 17:20:21,662 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2018-09-15 17:20:21,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:21,837 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2018-09-15 17:20:21,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-15 17:20:21,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-09-15 17:20:21,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:21,847 INFO L225 Difference]: With dead ends: 46 [2018-09-15 17:20:21,847 INFO L226 Difference]: Without dead ends: 25 [2018-09-15 17:20:21,851 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 12 GetRequests, 11 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 17:20:21,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-09-15 17:20:21,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 18. [2018-09-15 17:20:21,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-09-15 17:20:21,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-09-15 17:20:21,892 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2018-09-15 17:20:21,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:21,892 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-09-15 17:20:21,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-15 17:20:21,893 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-09-15 17:20:21,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-15 17:20:21,893 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:21,894 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:21,894 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:21,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1969781111, now seen corresponding path program 1 times [2018-09-15 17:20:21,895 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:21,895 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-15 17:20:21,896 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [18], [22], [28], [35], [38], [40], [46], [47], [48], [50] [2018-09-15 17:20:21,897 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:21,898 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:21,904 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:21,904 INFO L272 AbstractInterpreter]: Visited 10 different actions 10 times. Never merged. Never widened. Never found a fixpoint. Largest state had 5 variables. [2018-09-15 17:20:21,936 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:21,977 INFO L232 lantSequenceWeakener]: Weakened 3 states. On average, predicates are now at 27.78% of their original sizes. [2018-09-15 17:20:21,977 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:22,106 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:22,107 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:22,107 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-15 17:20:22,107 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:22,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-15 17:20:22,108 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-15 17:20:22,109 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-15 17:20:22,109 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 5 states. [2018-09-15 17:20:22,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:22,377 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2018-09-15 17:20:22,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-15 17:20:22,378 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-09-15 17:20:22,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:22,379 INFO L225 Difference]: With dead ends: 33 [2018-09-15 17:20:22,379 INFO L226 Difference]: Without dead ends: 20 [2018-09-15 17:20:22,380 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-09-15 17:20:22,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-09-15 17:20:22,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-09-15 17:20:22,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-09-15 17:20:22,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-09-15 17:20:22,387 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2018-09-15 17:20:22,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:22,387 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-09-15 17:20:22,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-15 17:20:22,388 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-09-15 17:20:22,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-15 17:20:22,388 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:22,389 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:22,389 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:22,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1960344783, now seen corresponding path program 1 times [2018-09-15 17:20:22,390 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:22,390 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-09-15 17:20:22,390 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [18], [22], [28], [35], [38], [40], [46], [47], [48], [50] [2018-09-15 17:20:22,392 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:22,392 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:22,446 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 17:20:22,446 INFO L272 AbstractInterpreter]: Visited 14 different actions 74 times. Merged at 6 different actions 41 times. Widened at 2 different actions 6 times. Found 1 fixpoints after 1 different actions. Largest state had 7 variables. [2018-09-15 17:20:22,460 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 17:20:22,484 INFO L232 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 41.67% of their original sizes. [2018-09-15 17:20:22,484 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 17:20:22,683 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 17:20:22,683 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 17:20:22,684 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-15 17:20:22,684 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 17:20:22,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-15 17:20:22,684 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-15 17:20:22,685 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-09-15 17:20:22,685 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 8 states. [2018-09-15 17:20:23,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 17:20:23,104 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-09-15 17:20:23,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-15 17:20:23,106 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2018-09-15 17:20:23,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 17:20:23,107 INFO L225 Difference]: With dead ends: 30 [2018-09-15 17:20:23,108 INFO L226 Difference]: Without dead ends: 28 [2018-09-15 17:20:23,108 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-09-15 17:20:23,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-09-15 17:20:23,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2018-09-15 17:20:23,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-09-15 17:20:23,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-09-15 17:20:23,116 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 16 [2018-09-15 17:20:23,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 17:20:23,117 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-09-15 17:20:23,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-15 17:20:23,117 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-09-15 17:20:23,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-15 17:20:23,118 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 17:20:23,119 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 17:20:23,119 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 17:20:23,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1864992939, now seen corresponding path program 1 times [2018-09-15 17:20:23,119 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 17:20:23,120 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-09-15 17:20:23,120 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [18], [22], [28], [30], [35], [38], [40], [43], [45], [46], [47], [48], [50], [51] [2018-09-15 17:20:23,122 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-15 17:20:23,122 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 17:20:23,197 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-15 17:20:23,197 INFO L272 AbstractInterpreter]: Visited 19 different actions 195 times. Merged at 8 different actions 83 times. Widened at 3 different actions 15 times. Found 8 fixpoints after 2 different actions. Largest state had 9 variables. [2018-09-15 17:20:23,245 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-15 17:20:23,266 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-15 17:20:23,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 05:20:23 BoogieIcfgContainer [2018-09-15 17:20:23,267 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-15 17:20:23,268 INFO L168 Benchmark]: Toolchain (without parser) took 2723.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.3 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -693.0 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:23,270 INFO L168 Benchmark]: CDTParser took 0.22 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 17:20:23,270 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.81 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 17:20:23,271 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.37 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 17:20:23,272 INFO L168 Benchmark]: Boogie Preprocessor took 27.62 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 17:20:23,272 INFO L168 Benchmark]: RCFGBuilder took 470.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -778.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:23,274 INFO L168 Benchmark]: TraceAbstraction took 1927.67 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 75.0 MB). Peak memory consumption was 75.0 MB. Max. memory is 7.1 GB. [2018-09-15 17:20:23,278 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 267.81 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 23.37 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 27.62 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 470.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -778.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1927.67 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 75.0 MB). Peak memory consumption was 75.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: 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: [L11] int n; [L12] int i = 0; [L13] int k = 0; [L14] n = __VERIFIER_nondet_int() [L15] COND TRUE i < n [L16] i++ [L16] i++ [L17] k++ [L17] k++ [L15] COND FALSE !(i < n) [L19] int j = 0; [L20] COND TRUE j < n [L21] CALL __VERIFIER_assert (k > 0) [L4] COND FALSE, RET !(!(cond)) [L21] __VERIFIER_assert (k > 0) [L22] j++ [L22] j++ [L23] k-- [L23] k-- [L20] COND TRUE j < n [L21] CALL __VERIFIER_assert (k > 0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. UNKNOWN Result, 1.8s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 50 SDtfs, 28 SDslu, 131 SDs, 0 SdLazy, 75 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 4 AbstIntIterations, 3 AbstIntStrong, 0.9682142857142859 AbsIntWeakeningRatio, 0.5 AbsIntAvgWeakeningVarsNumRemoved, 3.05 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 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/up_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-15_17-20-23-291.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/up_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-15_17-20-23-291.csv Received shutdown request...