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_CON-OldIcfg.epf -i ../../../trunk/examples/svcomp/loops/eureka_01_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-15 15:47:30,463 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 15:47:30,465 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 15:47:30,478 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 15:47:30,478 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 15:47:30,479 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 15:47:30,481 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 15:47:30,483 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 15:47:30,484 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 15:47:30,485 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 15:47:30,486 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 15:47:30,487 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 15:47:30,488 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 15:47:30,489 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 15:47:30,490 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 15:47:30,491 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 15:47:30,492 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 15:47:30,494 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 15:47:30,496 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 15:47:30,498 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 15:47:30,499 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 15:47:30,500 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 15:47:30,503 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-15 15:47:30,515 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf [2018-09-15 15:47:30,548 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 15:47:30,550 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 15:47:30,551 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 15:47:30,551 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 15:47:30,552 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 15:47:30,552 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 15:47:30,552 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 15:47:30,552 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 15:47:30,553 INFO L133 SettingsManager]: * Abstract domain=CongruenceDomain [2018-09-15 15:47:30,553 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 15:47:30,553 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 15:47:30,554 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-15 15:47:30,554 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 15:47:30,555 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 15:47:30,555 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 15:47:30,555 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 15:47:30,555 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 15:47:30,556 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 15:47:30,557 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 15:47:30,557 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 15:47:30,557 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 15:47:30,557 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 15:47:30,558 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 15:47:30,558 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 15:47:30,558 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 15:47:30,558 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 15:47:30,559 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 15:47:30,559 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 15:47:30,559 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 15:47:30,559 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 15:47:30,559 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 15:47:30,560 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 15:47:30,560 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 15:47:30,560 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 15:47:30,633 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 15:47:30,648 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 15:47:30,655 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 15:47:30,657 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 15:47:30,658 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 15:47:30,659 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/eureka_01_true-unreach-call.i [2018-09-15 15:47:31,038 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fd630e06/a286439f98834d60b0fe244f4a9fb641/FLAGc950f14be [2018-09-15 15:47:31,194 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 15:47:31,195 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_01_true-unreach-call.i [2018-09-15 15:47:31,202 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fd630e06/a286439f98834d60b0fe244f4a9fb641/FLAGc950f14be [2018-09-15 15:47:31,219 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fd630e06/a286439f98834d60b0fe244f4a9fb641 [2018-09-15 15:47:31,232 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 15:47:31,235 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 15:47:31,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 15:47:31,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 15:47:31,243 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 15:47:31,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 03:47:31" (1/1) ... [2018-09-15 15:47:31,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408707bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:31, skipping insertion in model container [2018-09-15 15:47:31,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 03:47:31" (1/1) ... [2018-09-15 15:47:31,261 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 15:47:31,476 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 15:47:31,494 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 15:47:31,518 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 15:47:31,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:31 WrapperNode [2018-09-15 15:47:31,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 15:47:31,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 15:47:31,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 15:47:31,544 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 15:47:31,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:31" (1/1) ... [2018-09-15 15:47:31,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:31" (1/1) ... [2018-09-15 15:47:31,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 15:47:31,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 15:47:31,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 15:47:31,574 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 15:47:31,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:31" (1/1) ... [2018-09-15 15:47:31,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:31" (1/1) ... [2018-09-15 15:47:31,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:31" (1/1) ... [2018-09-15 15:47:31,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:31" (1/1) ... [2018-09-15 15:47:31,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:31" (1/1) ... [2018-09-15 15:47:31,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:31" (1/1) ... [2018-09-15 15:47:31,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:31" (1/1) ... [2018-09-15 15:47:31,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 15:47:31,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 15:47:31,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 15:47:31,608 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 15:47:31,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:31" (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 15:47:31,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 15:47:31,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 15:47:31,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 15:47:31,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 15:47:31,752 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 15:47:31,752 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 15:47:31,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-15 15:47:31,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-15 15:47:32,349 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 15:47:32,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 03:47:32 BoogieIcfgContainer [2018-09-15 15:47:32,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 15:47:32,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 15:47:32,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 15:47:32,354 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 15:47:32,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 03:47:31" (1/3) ... [2018-09-15 15:47:32,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68afcc94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 03:47:32, skipping insertion in model container [2018-09-15 15:47:32,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:31" (2/3) ... [2018-09-15 15:47:32,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68afcc94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 03:47:32, skipping insertion in model container [2018-09-15 15:47:32,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 03:47:32" (3/3) ... [2018-09-15 15:47:32,358 INFO L112 eAbstractionObserver]: Analyzing ICFG eureka_01_true-unreach-call.i [2018-09-15 15:47:32,367 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 15:47:32,375 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 15:47:32,421 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 15:47:32,422 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 15:47:32,422 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 15:47:32,422 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 15:47:32,422 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 15:47:32,422 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 15:47:32,423 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 15:47:32,423 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 15:47:32,423 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 15:47:32,440 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-09-15 15:47:32,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-15 15:47:32,446 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:47:32,447 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:47:32,448 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:47:32,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1095333928, now seen corresponding path program 1 times [2018-09-15 15:47:32,454 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:47:32,455 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2018-09-15 15:47:32,458 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [23], [25], [56], [58], [75], [77], [81], [86], [95], [98], [100], [106], [107], [108], [110] [2018-09-15 15:47:32,483 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:47:32,483 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:47:32,539 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:47:32,540 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 13 variables. [2018-09-15 15:47:32,558 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:47:32,602 INFO L232 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2018-09-15 15:47:32,602 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:47:32,627 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:47:32,630 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:47:32,630 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-15 15:47:32,630 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:47:32,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-15 15:47:32,640 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-15 15:47:32,641 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 15:47:32,643 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2018-09-15 15:47:32,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:47:32,712 INFO L93 Difference]: Finished difference Result 68 states and 92 transitions. [2018-09-15 15:47:32,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-15 15:47:32,715 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-09-15 15:47:32,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:47:32,724 INFO L225 Difference]: With dead ends: 68 [2018-09-15 15:47:32,724 INFO L226 Difference]: Without dead ends: 34 [2018-09-15 15:47:32,728 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 [2018-09-15 15:47:32,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-09-15 15:47:32,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-09-15 15:47:32,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-09-15 15:47:32,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2018-09-15 15:47:32,767 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 18 [2018-09-15 15:47:32,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:47:32,768 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2018-09-15 15:47:32,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-15 15:47:32,768 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2018-09-15 15:47:32,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-15 15:47:32,769 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:47:32,770 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] [2018-09-15 15:47:32,770 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:47:32,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1016412537, now seen corresponding path program 1 times [2018-09-15 15:47:32,771 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:47:32,771 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 22 with the following transitions: [2018-09-15 15:47:32,771 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [25], [29], [32], [58], [62], [65], [77], [81], [86], [95], [98], [100], [106], [107], [108], [110] [2018-09-15 15:47:32,773 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:47:32,773 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:47:32,789 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:47:32,789 INFO L272 AbstractInterpreter]: Visited 8 different actions 8 times. Never merged. Never widened. Never found a fixpoint. Largest state had 13 variables. [2018-09-15 15:47:32,830 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:47:32,851 INFO L232 lantSequenceWeakener]: Weakened 6 states. On average, predicates are now at 83.33% of their original sizes. [2018-09-15 15:47:32,851 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:47:32,856 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:47:32,856 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:47:32,856 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-15 15:47:32,856 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:47:32,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-15 15:47:32,857 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-15 15:47:32,857 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 15:47:32,858 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 3 states. [2018-09-15 15:47:32,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:47:32,956 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2018-09-15 15:47:32,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-15 15:47:32,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-09-15 15:47:32,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:47:32,959 INFO L225 Difference]: With dead ends: 62 [2018-09-15 15:47:32,959 INFO L226 Difference]: Without dead ends: 38 [2018-09-15 15:47:32,963 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 [2018-09-15 15:47:32,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-09-15 15:47:32,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2018-09-15 15:47:32,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-09-15 15:47:32,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-09-15 15:47:32,974 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 21 [2018-09-15 15:47:32,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:47:32,975 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-09-15 15:47:32,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-15 15:47:32,975 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-09-15 15:47:32,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-09-15 15:47:32,976 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:47:32,976 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] [2018-09-15 15:47:32,976 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:47:32,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1891642786, now seen corresponding path program 1 times [2018-09-15 15:47:32,977 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:47:32,977 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 26 with the following transitions: [2018-09-15 15:47:32,977 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] [2018-09-15 15:47:32,979 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:47:32,979 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:47:32,989 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:47:32,989 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. [2018-09-15 15:47:33,006 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:47:33,024 INFO L232 lantSequenceWeakener]: Weakened 10 states. On average, predicates are now at 65% of their original sizes. [2018-09-15 15:47:33,024 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:47:33,123 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:47:33,123 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:47:33,123 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-15 15:47:33,123 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:47:33,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-15 15:47:33,124 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-15 15:47:33,124 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-09-15 15:47:33,124 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2018-09-15 15:47:33,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:47:33,476 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2018-09-15 15:47:33,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-15 15:47:33,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-09-15 15:47:33,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:47:33,479 INFO L225 Difference]: With dead ends: 70 [2018-09-15 15:47:33,479 INFO L226 Difference]: Without dead ends: 42 [2018-09-15 15:47:33,480 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 [2018-09-15 15:47:33,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-09-15 15:47:33,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-09-15 15:47:33,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-15 15:47:33,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-09-15 15:47:33,487 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 25 [2018-09-15 15:47:33,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:47:33,487 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-09-15 15:47:33,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-15 15:47:33,488 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-09-15 15:47:33,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-09-15 15:47:33,489 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:47:33,489 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] [2018-09-15 15:47:33,489 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:47:33,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1329539401, now seen corresponding path program 1 times [2018-09-15 15:47:33,489 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:47:33,490 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 30 with the following transitions: [2018-09-15 15:47:33,490 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] [2018-09-15 15:47:33,491 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:47:33,491 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:47:33,504 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:47:33,505 INFO L272 AbstractInterpreter]: Visited 15 different actions 27 times. Merged at 4 different actions 8 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 14 variables. [2018-09-15 15:47:33,508 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:47:33,533 INFO L232 lantSequenceWeakener]: Weakened 14 states. On average, predicates are now at 36.9% of their original sizes. [2018-09-15 15:47:33,533 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:47:33,632 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:47:33,632 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:47:33,633 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-15 15:47:33,633 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:47:33,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-15 15:47:33,634 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-15 15:47:33,634 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-15 15:47:33,634 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 6 states. [2018-09-15 15:47:33,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:47:33,931 INFO L93 Difference]: Finished difference Result 73 states and 86 transitions. [2018-09-15 15:47:33,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-15 15:47:33,934 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2018-09-15 15:47:33,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:47:33,937 INFO L225 Difference]: With dead ends: 73 [2018-09-15 15:47:33,937 INFO L226 Difference]: Without dead ends: 57 [2018-09-15 15:47:33,938 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-09-15 15:47:33,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-15 15:47:33,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2018-09-15 15:47:33,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-15 15:47:33,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2018-09-15 15:47:33,951 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 29 [2018-09-15 15:47:33,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:47:33,951 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2018-09-15 15:47:33,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-15 15:47:33,952 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2018-09-15 15:47:33,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-15 15:47:33,953 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:47:33,953 INFO L376 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1] [2018-09-15 15:47:33,953 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:47:33,954 INFO L82 PathProgramCache]: Analyzing trace with hash -642867162, now seen corresponding path program 1 times [2018-09-15 15:47:33,954 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:47:33,954 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 39 with the following transitions: [2018-09-15 15:47:33,954 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] [2018-09-15 15:47:33,956 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:47:33,956 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:47:33,964 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:47:33,965 INFO L272 AbstractInterpreter]: Visited 18 different actions 30 times. Merged at 4 different actions 8 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 16 variables. [2018-09-15 15:47:33,972 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:47:33,993 INFO L232 lantSequenceWeakener]: Weakened 18 states. On average, predicates are now at 39.02% of their original sizes. [2018-09-15 15:47:33,994 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:47:34,118 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:47:34,118 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:47:34,119 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-15 15:47:34,119 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:47:34,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-15 15:47:34,120 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-15 15:47:34,120 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-15 15:47:34,121 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 7 states. [2018-09-15 15:47:34,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:47:34,718 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2018-09-15 15:47:34,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-15 15:47:34,719 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2018-09-15 15:47:34,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:47:34,720 INFO L225 Difference]: With dead ends: 86 [2018-09-15 15:47:34,720 INFO L226 Difference]: Without dead ends: 61 [2018-09-15 15:47:34,721 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-09-15 15:47:34,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-09-15 15:47:34,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 47. [2018-09-15 15:47:34,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-09-15 15:47:34,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2018-09-15 15:47:34,730 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 38 [2018-09-15 15:47:34,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:47:34,730 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2018-09-15 15:47:34,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-15 15:47:34,730 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2018-09-15 15:47:34,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-15 15:47:34,732 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:47:34,732 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2018-09-15 15:47:34,732 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:47:34,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1391022145, now seen corresponding path program 1 times [2018-09-15 15:47:34,733 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:47:34,733 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 43 with the following transitions: [2018-09-15 15:47:34,733 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] [2018-09-15 15:47:34,735 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:47:34,735 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:47:34,765 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-15 15:47:34,766 INFO L272 AbstractInterpreter]: Visited 35 different actions 84 times. Merged at 16 different actions 37 times. Never widened. Found 8 fixpoints after 6 different actions. Largest state had 17 variables. [2018-09-15 15:47:34,786 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-15 15:47:34,808 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-15 15:47:34,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 03:47:34 BoogieIcfgContainer [2018-09-15 15:47:34,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-15 15:47:34,810 INFO L168 Benchmark]: Toolchain (without parser) took 3577.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -694.2 MB). Peak memory consumption was 49.8 MB. Max. memory is 7.1 GB. [2018-09-15 15:47:34,812 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. [2018-09-15 15:47:34,812 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.23 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 15:47:34,813 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.46 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 15:47:34,814 INFO L168 Benchmark]: Boogie Preprocessor took 33.40 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 15:47:34,815 INFO L168 Benchmark]: RCFGBuilder took 742.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -786.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-09-15 15:47:34,816 INFO L168 Benchmark]: TraceAbstraction took 2458.53 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: 81.9 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. [2018-09-15 15:47:34,820 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 307.23 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 29.46 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 33.40 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 742.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -786.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2458.53 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: 81.9 MB). Peak memory consumption was 81.9 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 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 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, 2.3s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 155 SDtfs, 267 SDslu, 145 SDs, 0 SdLazy, 180 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 130 GetRequests, 104 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 6 AbstIntIterations, 5 AbstIntStrong, 0.83015873015873 AbsIntWeakeningRatio, 0.6349206349206349 AbsIntAvgWeakeningVarsNumRemoved, 0.5793650793650794 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 29 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_CON-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-15_15-47-34-834.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/eureka_01_true-unreach-call.i_svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-15_15-47-34-834.csv Received shutdown request...