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/loops/eureka_01_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 08:01:02,800 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 08:01:02,802 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 08:01:02,815 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 08:01:02,816 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 08:01:02,817 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 08:01:02,818 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 08:01:02,820 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 08:01:02,822 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 08:01:02,823 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 08:01:02,824 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 08:01:02,824 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 08:01:02,825 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 08:01:02,826 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 08:01:02,828 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 08:01:02,828 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 08:01:02,829 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 08:01:02,832 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 08:01:02,834 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 08:01:02,836 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 08:01:02,837 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 08:01:02,839 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 08:01:02,842 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-19 08:01:02,852 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 [2018-09-19 08:01:02,868 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 08:01:02,868 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 08:01:02,869 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 08:01:02,869 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 08:01:02,869 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 08:01:02,869 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 08:01:02,870 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-19 08:01:02,870 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 08:01:02,870 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-19 08:01:02,870 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 08:01:02,870 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 08:01:02,871 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 08:01:02,871 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-19 08:01:02,872 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 08:01:02,872 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 08:01:02,872 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 08:01:02,873 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 08:01:02,873 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 08:01:02,873 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 08:01:02,873 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 08:01:02,873 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 08:01:02,874 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 08:01:02,874 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 08:01:02,874 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 08:01:02,874 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 08:01:02,874 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 08:01:02,875 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 08:01:02,875 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 08:01:02,875 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 08:01:02,875 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 08:01:02,876 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 08:01:02,876 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 08:01:02,876 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 08:01:02,876 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 08:01:02,876 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 08:01:02,947 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 08:01:02,966 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 08:01:02,973 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 08:01:02,975 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 08:01:02,975 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 08:01:02,976 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/eureka_01_true-unreach-call.i [2018-09-19 08:01:03,375 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/770421502/c48c0fe7f76f4929bc4a6320d7214de4/FLAGaf5e578de [2018-09-19 08:01:03,544 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 08:01:03,545 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_01_true-unreach-call.i [2018-09-19 08:01:03,554 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/770421502/c48c0fe7f76f4929bc4a6320d7214de4/FLAGaf5e578de [2018-09-19 08:01:03,569 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/770421502/c48c0fe7f76f4929bc4a6320d7214de4 [2018-09-19 08:01:03,579 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 08:01:03,582 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 08:01:03,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 08:01:03,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 08:01:03,592 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 08:01:03,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 08:01:03" (1/1) ... [2018-09-19 08:01:03,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bedad32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:03, skipping insertion in model container [2018-09-19 08:01:03,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 08:01:03" (1/1) ... [2018-09-19 08:01:03,608 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 08:01:03,881 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 08:01:03,899 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 08:01:03,920 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 08:01:03,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:03 WrapperNode [2018-09-19 08:01:03,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 08:01:03,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 08:01:03,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 08:01:03,941 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 08:01:03,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:03" (1/1) ... [2018-09-19 08:01:03,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:03" (1/1) ... [2018-09-19 08:01:03,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 08:01:03,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 08:01:03,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 08:01:03,971 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 08:01:03,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:03" (1/1) ... [2018-09-19 08:01:03,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:03" (1/1) ... [2018-09-19 08:01:03,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:03" (1/1) ... [2018-09-19 08:01:03,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:03" (1/1) ... [2018-09-19 08:01:03,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:03" (1/1) ... [2018-09-19 08:01:03,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:03" (1/1) ... [2018-09-19 08:01:03,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:03" (1/1) ... [2018-09-19 08:01:04,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 08:01:04,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 08:01:04,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 08:01:04,004 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 08:01:04,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:03" (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 [2018-09-19 08:01:04,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 08:01:04,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 08:01:04,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 08:01:04,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 08:01:04,146 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 08:01:04,146 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 08:01:04,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-19 08:01:04,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-19 08:01:04,727 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 08:01:04,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 08:01:04 BoogieIcfgContainer [2018-09-19 08:01:04,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 08:01:04,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 08:01:04,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 08:01:04,733 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 08:01:04,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 08:01:03" (1/3) ... [2018-09-19 08:01:04,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3acc60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 08:01:04, skipping insertion in model container [2018-09-19 08:01:04,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 08:01:03" (2/3) ... [2018-09-19 08:01:04,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3acc60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 08:01:04, skipping insertion in model container [2018-09-19 08:01:04,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 08:01:04" (3/3) ... [2018-09-19 08:01:04,736 INFO L112 eAbstractionObserver]: Analyzing ICFG eureka_01_true-unreach-call.i [2018-09-19 08:01:04,747 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 08:01:04,755 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 08:01:04,801 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 08:01:04,802 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 08:01:04,802 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 08:01:04,803 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 08:01:04,803 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 08:01:04,803 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 08:01:04,803 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 08:01:04,803 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 08:01:04,804 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 08:01:04,821 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-09-19 08:01:04,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-19 08:01:04,828 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 08:01:04,829 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 08:01:04,830 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 08:01:04,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1095333928, now seen corresponding path program 1 times [2018-09-19 08:01:04,839 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 08:01:04,840 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2018-09-19 08:01:04,842 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [23], [25], [56], [58], [75], [77], [81], [86], [95], [98], [100], [106], [107], [108], [110] [2018-09-19 08:01:04,899 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 08:01:04,899 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 08:01:04,969 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 08:01:04,971 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 13 variables. [2018-09-19 08:01:04,988 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 08:01:05,052 INFO L232 lantSequenceWeakener]: Weakened 6 states. On average, predicates are now at 97.22% of their original sizes. [2018-09-19 08:01:05,053 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 08:01:05,064 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 08:01:05,067 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 08:01:05,067 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-19 08:01:05,068 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 08:01:05,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-19 08:01:05,078 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-19 08:01:05,078 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 08:01:05,080 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2018-09-19 08:01:05,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 08:01:05,158 INFO L93 Difference]: Finished difference Result 68 states and 92 transitions. [2018-09-19 08:01:05,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-19 08:01:05,160 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-09-19 08:01:05,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 08:01:05,171 INFO L225 Difference]: With dead ends: 68 [2018-09-19 08:01:05,171 INFO L226 Difference]: Without dead ends: 34 [2018-09-19 08:01:05,177 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 08:01:05,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-09-19 08:01:05,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-09-19 08:01:05,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-09-19 08:01:05,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2018-09-19 08:01:05,218 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 18 [2018-09-19 08:01:05,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 08:01:05,219 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2018-09-19 08:01:05,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-19 08:01:05,219 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2018-09-19 08:01:05,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-19 08:01:05,220 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 08:01:05,220 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 08:01:05,221 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 08:01:05,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1016412537, now seen corresponding path program 1 times [2018-09-19 08:01:05,221 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 08:01:05,222 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 22 with the following transitions: [2018-09-19 08:01:05,222 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [25], [29], [32], [58], [62], [65], [77], [81], [86], [95], [98], [100], [106], [107], [108], [110] [2018-09-19 08:01:05,226 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 08:01:05,226 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 08:01:05,235 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 08:01:05,235 INFO L272 AbstractInterpreter]: Visited 8 different actions 8 times. Never merged. Never widened. Never found a fixpoint. Largest state had 13 variables. [2018-09-19 08:01:05,272 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 08:01:05,295 INFO L232 lantSequenceWeakener]: Weakened 7 states. On average, predicates are now at 85.71% of their original sizes. [2018-09-19 08:01:05,295 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 08:01:05,326 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 08:01:05,327 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 08:01:05,327 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-19 08:01:05,327 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 08:01:05,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-19 08:01:05,328 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-19 08:01:05,329 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 08:01:05,329 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 3 states. [2018-09-19 08:01:05,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 08:01:05,503 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2018-09-19 08:01:05,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-19 08:01:05,503 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-09-19 08:01:05,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 08:01:05,505 INFO L225 Difference]: With dead ends: 62 [2018-09-19 08:01:05,505 INFO L226 Difference]: Without dead ends: 38 [2018-09-19 08:01:05,508 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 08:01:05,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-09-19 08:01:05,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2018-09-19 08:01:05,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-09-19 08:01:05,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-09-19 08:01:05,518 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 21 [2018-09-19 08:01:05,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 08:01:05,518 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-09-19 08:01:05,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-19 08:01:05,519 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-09-19 08:01:05,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-09-19 08:01:05,520 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 08:01:05,520 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 08:01:05,521 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 08:01:05,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1891642786, now seen corresponding path program 1 times [2018-09-19 08:01:05,521 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 08:01:05,521 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 26 with the following transitions: [2018-09-19 08:01:05,522 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [14], [17], [21], [25], [29], [32], [58], [62], [65], [77], [81], [86], [95], [98], [100], [106], [107], [108], [110] [2018-09-19 08:01:05,528 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 08:01:05,528 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 08:01:05,544 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 08:01:05,544 INFO L272 AbstractInterpreter]: Visited 11 different actions 15 times. Merged at 3 different actions 3 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 14 variables. [2018-09-19 08:01:05,585 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 08:01:05,641 INFO L232 lantSequenceWeakener]: Weakened 11 states. On average, predicates are now at 68.18% of their original sizes. [2018-09-19 08:01:05,641 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 08:01:05,795 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 08:01:05,795 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 08:01:05,795 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-19 08:01:05,795 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 08:01:05,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-19 08:01:05,796 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-19 08:01:05,796 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-09-19 08:01:05,796 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2018-09-19 08:01:06,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 08:01:06,508 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2018-09-19 08:01:06,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-19 08:01:06,509 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-09-19 08:01:06,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 08:01:06,510 INFO L225 Difference]: With dead ends: 70 [2018-09-19 08:01:06,510 INFO L226 Difference]: Without dead ends: 42 [2018-09-19 08:01:06,511 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-09-19 08:01:06,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-09-19 08:01:06,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-09-19 08:01:06,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-19 08:01:06,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-09-19 08:01:06,520 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 25 [2018-09-19 08:01:06,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 08:01:06,521 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-09-19 08:01:06,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-19 08:01:06,521 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-09-19 08:01:06,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-09-19 08:01:06,522 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 08:01:06,522 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 08:01:06,522 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 08:01:06,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1329539401, now seen corresponding path program 1 times [2018-09-19 08:01:06,523 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 08:01:06,523 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 30 with the following transitions: [2018-09-19 08:01:06,523 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [14], [17], [19], [21], [25], [29], [32], [58], [62], [65], [77], [81], [86], [95], [98], [100], [106], [107], [108], [110] [2018-09-19 08:01:06,525 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 08:01:06,526 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 08:01:06,556 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 08:01:06,556 INFO L272 AbstractInterpreter]: Visited 15 different actions 42 times. Merged at 4 different actions 18 times. Widened at 1 different actions 1 times. Found 5 fixpoints after 2 different actions. Largest state had 14 variables. [2018-09-19 08:01:06,600 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 08:01:06,659 INFO L232 lantSequenceWeakener]: Weakened 15 states. On average, predicates are now at 38.89% of their original sizes. [2018-09-19 08:01:06,659 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 08:01:06,963 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 08:01:06,964 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 08:01:06,964 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-19 08:01:06,964 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 08:01:06,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-19 08:01:06,965 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-19 08:01:06,965 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-09-19 08:01:06,965 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 9 states. [2018-09-19 08:01:07,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 08:01:07,693 INFO L93 Difference]: Finished difference Result 95 states and 115 transitions. [2018-09-19 08:01:07,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-19 08:01:07,693 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2018-09-19 08:01:07,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 08:01:07,697 INFO L225 Difference]: With dead ends: 95 [2018-09-19 08:01:07,697 INFO L226 Difference]: Without dead ends: 71 [2018-09-19 08:01:07,698 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=107, Unknown=0, NotChecked=0, Total=182 [2018-09-19 08:01:07,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-09-19 08:01:07,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 59. [2018-09-19 08:01:07,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-19 08:01:07,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2018-09-19 08:01:07,723 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 29 [2018-09-19 08:01:07,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 08:01:07,723 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2018-09-19 08:01:07,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-19 08:01:07,723 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2018-09-19 08:01:07,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-19 08:01:07,725 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 08:01:07,725 INFO L376 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 08:01:07,725 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 08:01:07,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1509436642, now seen corresponding path program 1 times [2018-09-19 08:01:07,726 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 08:01:07,726 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 52 with the following transitions: [2018-09-19 08:01:07,727 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [14], [17], [19], [21], [25], [29], [32], [34], [38], [41], [54], [58], [62], [65], [67], [71], [73], [77], [81], [86], [95], [98], [100], [106], [107], [108], [110] [2018-09-19 08:01:07,729 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 08:01:07,729 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 08:01:07,749 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 08:01:07,749 INFO L272 AbstractInterpreter]: Visited 18 different actions 45 times. Merged at 4 different actions 18 times. Widened at 1 different actions 1 times. Found 5 fixpoints after 2 different actions. Largest state had 16 variables. [2018-09-19 08:01:07,789 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 08:01:07,863 INFO L232 lantSequenceWeakener]: Weakened 23 states. On average, predicates are now at 41.51% of their original sizes. [2018-09-19 08:01:07,864 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 08:01:08,211 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 08:01:08,213 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 08:01:08,214 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 08:01:08,214 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 08:01:08,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 08:01:08,216 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 08:01:08,216 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-09-19 08:01:08,217 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand 10 states. [2018-09-19 08:01:09,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 08:01:09,140 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2018-09-19 08:01:09,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-19 08:01:09,141 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2018-09-19 08:01:09,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 08:01:09,142 INFO L225 Difference]: With dead ends: 107 [2018-09-19 08:01:09,142 INFO L226 Difference]: Without dead ends: 71 [2018-09-19 08:01:09,143 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2018-09-19 08:01:09,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-09-19 08:01:09,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2018-09-19 08:01:09,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-09-19 08:01:09,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2018-09-19 08:01:09,160 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 51 [2018-09-19 08:01:09,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 08:01:09,161 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2018-09-19 08:01:09,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 08:01:09,161 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2018-09-19 08:01:09,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-09-19 08:01:09,162 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 08:01:09,162 INFO L376 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 08:01:09,163 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 08:01:09,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1273888233, now seen corresponding path program 1 times [2018-09-19 08:01:09,163 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 08:01:09,163 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 56 with the following transitions: [2018-09-19 08:01:09,164 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [14], [17], [19], [21], [25], [29], [32], [34], [38], [41], [43], [48], [50], [54], [58], [62], [65], [67], [71], [73], [77], [81], [86], [95], [98], [100], [106], [107], [108], [110] [2018-09-19 08:01:09,166 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 08:01:09,167 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 08:01:09,364 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-19 08:01:09,364 INFO L272 AbstractInterpreter]: Visited 35 different actions 303 times. Merged at 16 different actions 208 times. Widened at 5 different actions 40 times. Found 14 fixpoints after 7 different actions. Largest state had 17 variables. [2018-09-19 08:01:09,386 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-19 08:01:09,408 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-19 08:01:09,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 08:01:09 BoogieIcfgContainer [2018-09-19 08:01:09,409 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 08:01:09,412 INFO L168 Benchmark]: Toolchain (without parser) took 5832.62 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -470.2 MB). Peak memory consumption was 270.1 MB. Max. memory is 7.1 GB. [2018-09-19 08:01:09,414 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-09-19 08:01:09,415 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.68 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. [2018-09-19 08:01:09,416 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.30 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. [2018-09-19 08:01:09,416 INFO L168 Benchmark]: Boogie Preprocessor took 33.06 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. [2018-09-19 08:01:09,417 INFO L168 Benchmark]: RCFGBuilder took 724.06 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -776.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-09-19 08:01:09,418 INFO L168 Benchmark]: TraceAbstraction took 4679.92 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 295.3 MB). Peak memory consumption was 295.3 MB. Max. memory is 7.1 GB. [2018-09-19 08:01:09,424 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 355.68 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 30.30 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 33.06 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 724.06 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -776.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4679.92 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 295.3 MB). Peak memory consumption was 295.3 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: [L9] int INFINITY = 899; [L12] int nodecount = 5; [L13] int edgecount = 20; [L14] int source = 0; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L15] int Source[20] = {0,4,1,1,0,0,1,3,4,4,2,2,3,0,0,3,1,2,2,3}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L16] int Dest[20] = {1,3,4,1,1,4,3,4,3,0,0,0,0,2,3,0,2,1,0,4}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L17] int Weight[20] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19}; [L18] int distance[5]; [L19] int x,y; [L20] int i,j; [L22] i = 0 [L22] COND TRUE i < nodecount [L23] COND TRUE i == source [L24] distance[i] = 0 [L22] i++ [L22] i++ [L22] COND TRUE i < nodecount [L23] COND FALSE !(i == source) [L27] distance[i] = INFINITY [L22] i++ [L22] i++ [L22] COND FALSE !(i < nodecount) [L31] i = 0 [L31] COND TRUE i < nodecount [L33] j = 0 [L33] COND TRUE j < edgecount [L35] x = Dest[j] [L36] y = Source[j] [L37] COND FALSE !(distance[x] > distance[y] + Weight[j]) [L33] j++ [L33] j++ [L33] COND FALSE !(j < edgecount) [L31] i++ [L31] i++ [L31] COND TRUE i < nodecount [L33] j = 0 [L33] COND FALSE !(j < edgecount) [L31] i++ [L31] i++ [L31] COND FALSE !(i < nodecount) [L43] i = 0 [L43] COND TRUE i < edgecount [L45] x = Dest[i] [L46] y = Source[i] [L47] COND FALSE !(distance[x] > distance[y] + Weight[i]) [L43] i++ [L43] i++ [L43] COND TRUE i < edgecount [L45] x = Dest[i] [L46] y = Source[i] [L47] COND FALSE !(distance[x] > distance[y] + Weight[i]) [L43] i++ [L43] i++ [L43] COND TRUE i < edgecount [L45] x = Dest[i] [L46] y = Source[i] [L47] COND FALSE !(distance[x] > distance[y] + Weight[i]) [L43] i++ [L43] i++ [L43] COND FALSE !(i < edgecount) [L53] i = 0 [L53] COND TRUE i < nodecount [L55] CALL __VERIFIER_assert(distance[i]>=0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 1 error locations. UNKNOWN Result, 4.6s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 2.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 155 SDtfs, 394 SDslu, 176 SDs, 0 SdLazy, 220 SolverSat, 101 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 151 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.6s AbstIntTime, 6 AbstIntIterations, 5 AbstIntStrong, 0.9570371175587004 AbsIntWeakeningRatio, 0.6330935251798561 AbsIntAvgWeakeningVarsNumRemoved, 14.122302158273381 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 25 StatesRemovedByMinimization, 4 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/eureka_01_true-unreach-call.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-19_08-01-09-437.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/eureka_01_true-unreach-call.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-19_08-01-09-437.csv Received shutdown request...