java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf -i ../../../trunk/examples/svcomp/array-memsafety/cstrncpy-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 05:33:11,588 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 05:33:11,590 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 05:33:11,606 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 05:33:11,606 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 05:33:11,607 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 05:33:11,608 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 05:33:11,610 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 05:33:11,612 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 05:33:11,613 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 05:33:11,614 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 05:33:11,614 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 05:33:11,615 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 05:33:11,616 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 05:33:11,617 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 05:33:11,620 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 05:33:11,622 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 05:33:11,624 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 05:33:11,626 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 05:33:11,627 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 05:33:11,629 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 05:33:11,634 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 05:33:11,635 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 05:33:11,635 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf [2018-01-21 05:33:11,645 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 05:33:11,646 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 05:33:11,647 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 05:33:11,647 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 05:33:11,647 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 05:33:11,647 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 05:33:11,647 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 05:33:11,648 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 05:33:11,648 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 05:33:11,649 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 05:33:11,649 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 05:33:11,649 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 05:33:11,649 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 05:33:11,649 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 05:33:11,650 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 05:33:11,650 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 05:33:11,650 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 05:33:11,650 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 05:33:11,651 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 05:33:11,651 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 05:33:11,651 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 05:33:11,651 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 05:33:11,651 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 05:33:11,652 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 05:33:11,652 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 05:33:11,652 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 05:33:11,652 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 05:33:11,653 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 05:33:11,653 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 05:33:11,653 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 05:33:11,653 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 05:33:11,653 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 05:33:11,653 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 05:33:11,654 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 05:33:11,654 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 05:33:11,654 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 05:33:11,654 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 05:33:11,655 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 05:33:11,655 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 05:33:11,689 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 05:33:11,703 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 05:33:11,707 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 05:33:11,709 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 05:33:11,709 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 05:33:11,710 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrncpy-alloca_true-valid-memsafety_true-termination.i [2018-01-21 05:33:11,936 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 05:33:11,941 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 05:33:11,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 05:33:11,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 05:33:11,947 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 05:33:11,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:33:11" (1/1) ... [2018-01-21 05:33:11,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@719878db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:33:11, skipping insertion in model container [2018-01-21 05:33:11,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:33:11" (1/1) ... [2018-01-21 05:33:11,970 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:33:12,014 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:33:12,130 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:33:12,146 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:33:12,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:33:12 WrapperNode [2018-01-21 05:33:12,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 05:33:12,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 05:33:12,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 05:33:12,158 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 05:33:12,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:33:12" (1/1) ... [2018-01-21 05:33:12,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:33:12" (1/1) ... [2018-01-21 05:33:12,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:33:12" (1/1) ... [2018-01-21 05:33:12,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:33:12" (1/1) ... [2018-01-21 05:33:12,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:33:12" (1/1) ... [2018-01-21 05:33:12,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:33:12" (1/1) ... [2018-01-21 05:33:12,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:33:12" (1/1) ... [2018-01-21 05:33:12,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 05:33:12,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 05:33:12,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 05:33:12,198 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 05:33:12,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:33:12" (1/1) ... No working directory specified, using /storage/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 [2018-01-21 05:33:12,250 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 05:33:12,250 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 05:33:12,250 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncpy [2018-01-21 05:33:12,250 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 05:33:12,250 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 05:33:12,251 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 05:33:12,251 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 05:33:12,251 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 05:33:12,251 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 05:33:12,251 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 05:33:12,251 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncpy [2018-01-21 05:33:12,251 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 05:33:12,251 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 05:33:12,251 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 05:33:12,441 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 05:33:12,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:33:12 BoogieIcfgContainer [2018-01-21 05:33:12,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 05:33:12,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 05:33:12,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 05:33:12,446 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 05:33:12,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 05:33:11" (1/3) ... [2018-01-21 05:33:12,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204e92e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:33:12, skipping insertion in model container [2018-01-21 05:33:12,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:33:12" (2/3) ... [2018-01-21 05:33:12,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204e92e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:33:12, skipping insertion in model container [2018-01-21 05:33:12,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:33:12" (3/3) ... [2018-01-21 05:33:12,450 INFO L105 eAbstractionObserver]: Analyzing ICFG cstrncpy-alloca_true-valid-memsafety_true-termination.i [2018-01-21 05:33:12,459 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 05:33:12,469 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 05:33:12,509 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:33:12,509 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:33:12,509 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:33:12,510 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:33:12,510 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:33:12,510 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:33:12,510 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:33:12,510 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cstrncpyErr0EnsuresViolation======== [2018-01-21 05:33:12,511 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:33:12,528 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-21 05:33:12,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-21 05:33:12,535 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:33:12,536 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:33:12,536 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrncpyErr0EnsuresViolation]=== [2018-01-21 05:33:12,540 INFO L82 PathProgramCache]: Analyzing trace with hash -863788705, now seen corresponding path program 1 times [2018-01-21 05:33:12,542 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:33:12,585 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:33:12,586 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:33:12,586 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:33:12,586 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:33:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:33:12,651 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:33:12,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 05:33:12,698 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:33:12,698 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 05:33:12,698 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:33:12,700 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 05:33:12,711 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 05:33:12,712 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 05:33:12,713 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2018-01-21 05:33:12,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:33:12,733 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2018-01-21 05:33:12,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 05:33:12,734 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-01-21 05:33:12,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:33:12,742 INFO L225 Difference]: With dead ends: 55 [2018-01-21 05:33:12,781 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 05:33:12,786 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 05:33:12,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 05:33:12,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 05:33:12,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 05:33:12,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 05:33:12,889 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-01-21 05:33:12,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:33:12,890 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 05:33:12,890 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 05:33:12,890 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 05:33:12,890 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 05:33:12,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-21 05:33:12,928 INFO L401 ceAbstractionStarter]: For program point L551'(lines 551 552) no Hoare annotation was computed. [2018-01-21 05:33:12,928 INFO L401 ceAbstractionStarter]: For program point L546(lines 546 555) no Hoare annotation was computed. [2018-01-21 05:33:12,928 INFO L404 ceAbstractionStarter]: At program point cstrncpyENTRY(lines 540 557) the Hoare annotation is: true [2018-01-21 05:33:12,928 INFO L401 ceAbstractionStarter]: For program point L548(line 548) no Hoare annotation was computed. [2018-01-21 05:33:12,929 INFO L401 ceAbstractionStarter]: For program point cstrncpyFINAL(lines 540 557) no Hoare annotation was computed. [2018-01-21 05:33:12,929 INFO L401 ceAbstractionStarter]: For program point L548'(line 548) no Hoare annotation was computed. [2018-01-21 05:33:12,929 INFO L401 ceAbstractionStarter]: For program point cstrncpyErr0EnsuresViolation(lines 540 557) no Hoare annotation was computed. [2018-01-21 05:33:12,929 INFO L401 ceAbstractionStarter]: For program point L552(line 552) no Hoare annotation was computed. [2018-01-21 05:33:12,929 INFO L401 ceAbstractionStarter]: For program point L551(lines 551 552) no Hoare annotation was computed. [2018-01-21 05:33:12,929 INFO L401 ceAbstractionStarter]: For program point L552'(line 552) no Hoare annotation was computed. [2018-01-21 05:33:12,929 INFO L401 ceAbstractionStarter]: For program point cstrncpyEXIT(lines 540 557) no Hoare annotation was computed. [2018-01-21 05:33:12,930 INFO L404 ceAbstractionStarter]: At program point L551'''(lines 551 552) the Hoare annotation is: true [2018-01-21 05:33:12,930 INFO L404 ceAbstractionStarter]: At program point L546''(lines 546 555) the Hoare annotation is: true [2018-01-21 05:33:12,930 INFO L401 ceAbstractionStarter]: For program point L546'''(lines 546 555) no Hoare annotation was computed. [2018-01-21 05:33:12,930 INFO L401 ceAbstractionStarter]: For program point L548''(line 548) no Hoare annotation was computed. [2018-01-21 05:33:12,930 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 572) no Hoare annotation was computed. [2018-01-21 05:33:12,930 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 572) no Hoare annotation was computed. [2018-01-21 05:33:12,931 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 572) the Hoare annotation is: true [2018-01-21 05:33:12,931 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 572) no Hoare annotation was computed. [2018-01-21 05:33:12,931 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 572) the Hoare annotation is: true [2018-01-21 05:33:12,931 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 572) no Hoare annotation was computed. [2018-01-21 05:33:12,931 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 572) the Hoare annotation is: true [2018-01-21 05:33:12,931 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 572) no Hoare annotation was computed. [2018-01-21 05:33:12,932 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 572) no Hoare annotation was computed. [2018-01-21 05:33:12,932 INFO L401 ceAbstractionStarter]: For program point L561(lines 561 563) no Hoare annotation was computed. [2018-01-21 05:33:12,932 INFO L401 ceAbstractionStarter]: For program point L568(line 568) no Hoare annotation was computed. [2018-01-21 05:33:12,932 INFO L401 ceAbstractionStarter]: For program point L567(line 567) no Hoare annotation was computed. [2018-01-21 05:33:12,932 INFO L401 ceAbstractionStarter]: For program point L569(line 569) no Hoare annotation was computed. [2018-01-21 05:33:12,932 INFO L401 ceAbstractionStarter]: For program point L568'(line 568) no Hoare annotation was computed. [2018-01-21 05:33:12,932 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 558 572) no Hoare annotation was computed. [2018-01-21 05:33:12,933 INFO L401 ceAbstractionStarter]: For program point L570(line 570) no Hoare annotation was computed. [2018-01-21 05:33:12,933 INFO L401 ceAbstractionStarter]: For program point L568'''(line 568) no Hoare annotation was computed. [2018-01-21 05:33:12,933 INFO L401 ceAbstractionStarter]: For program point L564'(lines 564 566) no Hoare annotation was computed. [2018-01-21 05:33:12,933 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 558 572) no Hoare annotation was computed. [2018-01-21 05:33:12,933 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 558 572) no Hoare annotation was computed. [2018-01-21 05:33:12,933 INFO L404 ceAbstractionStarter]: At program point mainENTRY(lines 558 572) the Hoare annotation is: true [2018-01-21 05:33:12,933 INFO L401 ceAbstractionStarter]: For program point L561''(lines 561 563) no Hoare annotation was computed. [2018-01-21 05:33:12,934 INFO L401 ceAbstractionStarter]: For program point L567'(line 567) no Hoare annotation was computed. [2018-01-21 05:33:12,934 INFO L404 ceAbstractionStarter]: At program point L569'(line 569) the Hoare annotation is: true [2018-01-21 05:33:12,934 INFO L401 ceAbstractionStarter]: For program point L567''(line 567) no Hoare annotation was computed. [2018-01-21 05:33:12,934 INFO L401 ceAbstractionStarter]: For program point L568''(line 568) no Hoare annotation was computed. [2018-01-21 05:33:12,937 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:33:12,938 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:33:12,938 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:33:12,938 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:33:12,938 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:33:12,938 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:33:12,938 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:33:12,938 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 05:33:12,938 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:33:12,940 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-21 05:33:12,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 05:33:12,941 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:33:12,941 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 05:33:12,941 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 05:33:12,941 INFO L82 PathProgramCache]: Analyzing trace with hash 101226, now seen corresponding path program 1 times [2018-01-21 05:33:12,942 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:33:12,943 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:33:12,943 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:33:12,943 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:33:12,943 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:33:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:33:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:33:12,975 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 05:33:12,980 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:33:12,985 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:33:12,986 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:33:12,986 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:33:12,986 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:33:12,986 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:33:12,986 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:33:12,986 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:33:12,986 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 05:33:12,987 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:33:12,988 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-21 05:33:12,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-21 05:33:12,990 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:33:12,990 INFO L322 BasicCegarLoop]: trace histogram [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] [2018-01-21 05:33:12,990 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:33:12,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1088900075, now seen corresponding path program 1 times [2018-01-21 05:33:12,991 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:33:12,992 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:33:12,992 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:33:12,992 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:33:12,992 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:33:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:33:13,009 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:33:13,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 05:33:13,034 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:33:13,034 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 05:33:13,034 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:33:13,034 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 05:33:13,035 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 05:33:13,035 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 05:33:13,035 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2018-01-21 05:33:13,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:33:13,040 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2018-01-21 05:33:13,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 05:33:13,041 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2018-01-21 05:33:13,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:33:13,045 INFO L225 Difference]: With dead ends: 55 [2018-01-21 05:33:13,045 INFO L226 Difference]: Without dead ends: 37 [2018-01-21 05:33:13,046 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 05:33:13,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-01-21 05:33:13,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-01-21 05:33:13,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-01-21 05:33:13,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2018-01-21 05:33:13,058 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 27 [2018-01-21 05:33:13,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:33:13,058 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2018-01-21 05:33:13,058 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 05:33:13,058 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2018-01-21 05:33:13,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-21 05:33:13,060 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:33:13,060 INFO L322 BasicCegarLoop]: trace histogram [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] [2018-01-21 05:33:13,060 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:33:13,060 INFO L82 PathProgramCache]: Analyzing trace with hash -145997304, now seen corresponding path program 1 times [2018-01-21 05:33:13,060 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:33:13,062 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:33:13,062 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:33:13,062 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:33:13,062 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:33:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:33:13,088 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:33:13,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 05:33:13,173 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:33:13,173 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 05:33:13,173 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:33:13,175 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 05:33:13,176 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 05:33:13,176 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-21 05:33:13,176 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2018-01-21 05:33:13,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:33:13,240 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2018-01-21 05:33:13,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 05:33:13,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2018-01-21 05:33:13,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:33:13,242 INFO L225 Difference]: With dead ends: 51 [2018-01-21 05:33:13,242 INFO L226 Difference]: Without dead ends: 39 [2018-01-21 05:33:13,244 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-21 05:33:13,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-01-21 05:33:13,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-01-21 05:33:13,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-01-21 05:33:13,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2018-01-21 05:33:13,250 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 28 [2018-01-21 05:33:13,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:33:13,251 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2018-01-21 05:33:13,251 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 05:33:13,251 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2018-01-21 05:33:13,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-21 05:33:13,252 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:33:13,252 INFO L322 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:33:13,253 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:33:13,253 INFO L82 PathProgramCache]: Analyzing trace with hash 197922362, now seen corresponding path program 1 times [2018-01-21 05:33:13,253 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:33:13,254 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:33:13,254 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:33:13,254 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:33:13,255 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:33:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:33:13,279 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:33:13,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 05:33:13,645 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 05:33:13,645 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 05:33:13,646 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 34 with the following transitions: [2018-01-21 05:33:13,648 INFO L201 CegarAbsIntRunner]: [0], [4], [8], [10], [11], [12], [33], [37], [38], [40], [41], [46], [47], [50], [56], [60], [61], [62], [63], [64], [66], [67], [68], [69], [70], [71], [73], [74], [75], [76], [77], [78] [2018-01-21 05:33:13,701 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 05:33:13,702 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown