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/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 17:15:46,411 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 17:15:46,412 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 17:15:46,428 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 17:15:46,428 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 17:15:46,429 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 17:15:46,430 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 17:15:46,432 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 17:15:46,434 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 17:15:46,435 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 17:15:46,436 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 17:15:46,436 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 17:15:46,437 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 17:15:46,438 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 17:15:46,439 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 17:15:46,441 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 17:15:46,444 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 17:15:46,446 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 17:15:46,447 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 17:15:46,448 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 17:15:46,451 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 17:15:46,451 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 17:15:46,451 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 17:15:46,452 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 17:15:46,453 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 17:15:46,454 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 17:15:46,455 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 17:15:46,455 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 17:15:46,456 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 17:15:46,456 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 17:15:46,456 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 17:15:46,457 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf [2018-01-24 17:15:46,465 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 17:15:46,465 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 17:15:46,466 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 17:15:46,466 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 17:15:46,466 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 17:15:46,466 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 17:15:46,466 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 17:15:46,466 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 17:15:46,467 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 17:15:46,467 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 17:15:46,467 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 17:15:46,467 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 17:15:46,467 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 17:15:46,468 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 17:15:46,468 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 17:15:46,468 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 17:15:46,468 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 17:15:46,468 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 17:15:46,468 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 17:15:46,468 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 17:15:46,468 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 17:15:46,469 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 17:15:46,469 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 17:15:46,469 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 17:15:46,469 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 17:15:46,470 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 17:15:46,470 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 17:15:46,470 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 17:15:46,470 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 17:15:46,470 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 17:15:46,470 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 17:15:46,470 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 17:15:46,470 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 17:15:46,471 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 17:15:46,471 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 17:15:46,471 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 17:15:46,504 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 17:15:46,514 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 17:15:46,517 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 17:15:46,518 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 17:15:46,518 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 17:15:46,519 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c [2018-01-24 17:15:46,621 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 17:15:46,626 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 17:15:46,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 17:15:46,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 17:15:46,632 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 17:15:46,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 05:15:46" (1/1) ... [2018-01-24 17:15:46,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@645ed8cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:15:46, skipping insertion in model container [2018-01-24 17:15:46,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 05:15:46" (1/1) ... [2018-01-24 17:15:46,649 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 17:15:46,663 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 17:15:46,775 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 17:15:46,790 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 17:15:46,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:15:46 WrapperNode [2018-01-24 17:15:46,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 17:15:46,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 17:15:46,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 17:15:46,798 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 17:15:46,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:15:46" (1/1) ... [2018-01-24 17:15:46,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:15:46" (1/1) ... [2018-01-24 17:15:46,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:15:46" (1/1) ... [2018-01-24 17:15:46,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:15:46" (1/1) ... [2018-01-24 17:15:46,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:15:46" (1/1) ... [2018-01-24 17:15:46,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:15:46" (1/1) ... [2018-01-24 17:15:46,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:15:46" (1/1) ... [2018-01-24 17:15:46,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 17:15:46,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 17:15:46,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 17:15:46,829 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 17:15:46,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:15:46" (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 [2018-01-24 17:15:46,875 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 17:15:46,876 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 17:15:46,876 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-01-24 17:15:46,876 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 17:15:46,876 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 17:15:46,876 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 17:15:46,876 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 17:15:46,877 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 17:15:46,877 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 17:15:46,877 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-01-24 17:15:46,877 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 17:15:46,877 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 17:15:46,877 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 17:15:47,048 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 17:15:47,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 05:15:47 BoogieIcfgContainer [2018-01-24 17:15:47,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 17:15:47,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 17:15:47,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 17:15:47,051 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 17:15:47,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 05:15:46" (1/3) ... [2018-01-24 17:15:47,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16dc41ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 05:15:47, skipping insertion in model container [2018-01-24 17:15:47,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:15:46" (2/3) ... [2018-01-24 17:15:47,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16dc41ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 05:15:47, skipping insertion in model container [2018-01-24 17:15:47,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 05:15:47" (3/3) ... [2018-01-24 17:15:47,054 INFO L105 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c [2018-01-24 17:15:47,061 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 17:15:47,067 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-01-24 17:15:47,111 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 17:15:47,111 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 17:15:47,111 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 17:15:47,112 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 17:15:47,112 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 17:15:47,112 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 17:15:47,112 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 17:15:47,112 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 17:15:47,113 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 17:15:47,133 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-01-24 17:15:47,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-01-24 17:15:47,140 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:15:47,141 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:15:47,141 INFO L371 AbstractCegarLoop]: === Iteration 1 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 17:15:47,147 INFO L82 PathProgramCache]: Analyzing trace with hash -215054890, now seen corresponding path program 1 times [2018-01-24 17:15:47,149 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:15:47,206 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:15:47,207 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:15:47,207 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:15:47,207 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:15:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:15:47,266 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:15:47,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:15:47,347 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:15:47,347 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 17:15:47,348 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:15:47,350 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 17:15:47,364 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 17:15:47,365 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 17:15:47,368 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2018-01-24 17:15:47,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:15:47,458 INFO L93 Difference]: Finished difference Result 101 states and 123 transitions. [2018-01-24 17:15:47,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 17:15:47,459 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-01-24 17:15:47,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:15:47,469 INFO L225 Difference]: With dead ends: 101 [2018-01-24 17:15:47,469 INFO L226 Difference]: Without dead ends: 59 [2018-01-24 17:15:47,472 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 17:15:47,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-01-24 17:15:47,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49. [2018-01-24 17:15:47,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-01-24 17:15:47,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2018-01-24 17:15:47,570 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 11 [2018-01-24 17:15:47,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:15:47,570 INFO L432 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2018-01-24 17:15:47,570 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 17:15:47,570 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2018-01-24 17:15:47,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 17:15:47,571 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:15:47,571 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:15:47,571 INFO L371 AbstractCegarLoop]: === Iteration 2 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 17:15:47,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1100032001, now seen corresponding path program 1 times [2018-01-24 17:15:47,571 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:15:47,572 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:15:47,572 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:15:47,572 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:15:47,573 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:15:47,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:15:47,591 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:15:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:15:47,697 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:15:47,697 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 17:15:47,697 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:15:47,699 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 17:15:47,699 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 17:15:47,699 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-24 17:15:47,699 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 6 states. [2018-01-24 17:15:47,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:15:47,872 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2018-01-24 17:15:47,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 17:15:47,873 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-01-24 17:15:47,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:15:47,877 INFO L225 Difference]: With dead ends: 129 [2018-01-24 17:15:47,877 INFO L226 Difference]: Without dead ends: 91 [2018-01-24 17:15:47,878 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-24 17:15:47,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-01-24 17:15:47,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 66. [2018-01-24 17:15:47,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-01-24 17:15:47,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2018-01-24 17:15:47,890 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 16 [2018-01-24 17:15:47,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:15:47,890 INFO L432 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2018-01-24 17:15:47,891 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 17:15:47,891 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2018-01-24 17:15:47,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 17:15:47,891 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:15:47,892 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:15:47,892 INFO L371 AbstractCegarLoop]: === Iteration 3 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 17:15:47,892 INFO L82 PathProgramCache]: Analyzing trace with hash -258746290, now seen corresponding path program 1 times [2018-01-24 17:15:47,892 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:15:47,894 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:15:47,894 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:15:47,894 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:15:47,894 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:15:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:15:47,908 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:15:48,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:15:48,012 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:15:48,012 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 17:15:48,013 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:15:48,013 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 17:15:48,013 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 17:15:48,013 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 17:15:48,014 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand 5 states. [2018-01-24 17:15:48,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:15:48,140 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2018-01-24 17:15:48,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 17:15:48,140 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-24 17:15:48,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:15:48,141 INFO L225 Difference]: With dead ends: 77 [2018-01-24 17:15:48,141 INFO L226 Difference]: Without dead ends: 76 [2018-01-24 17:15:48,141 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-24 17:15:48,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-01-24 17:15:48,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2018-01-24 17:15:48,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-01-24 17:15:48,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 78 transitions. [2018-01-24 17:15:48,150 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 78 transitions. Word has length 17 [2018-01-24 17:15:48,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:15:48,150 INFO L432 AbstractCegarLoop]: Abstraction has 68 states and 78 transitions. [2018-01-24 17:15:48,150 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 17:15:48,150 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 78 transitions. [2018-01-24 17:15:48,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 17:15:48,151 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:15:48,151 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:15:48,151 INFO L371 AbstractCegarLoop]: === Iteration 4 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 17:15:48,151 INFO L82 PathProgramCache]: Analyzing trace with hash -258746291, now seen corresponding path program 1 times [2018-01-24 17:15:48,151 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:15:48,152 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:15:48,152 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:15:48,152 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:15:48,152 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:15:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:15:48,159 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:15:48,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:15:48,187 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:15:48,188 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 17:15:48,188 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:15:48,188 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 17:15:48,188 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 17:15:48,189 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 17:15:48,189 INFO L87 Difference]: Start difference. First operand 68 states and 78 transitions. Second operand 5 states. [2018-01-24 17:15:48,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:15:48,244 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2018-01-24 17:15:48,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 17:15:48,245 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-24 17:15:48,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:15:48,246 INFO L225 Difference]: With dead ends: 68 [2018-01-24 17:15:48,246 INFO L226 Difference]: Without dead ends: 67 [2018-01-24 17:15:48,247 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-24 17:15:48,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-01-24 17:15:48,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-01-24 17:15:48,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-01-24 17:15:48,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2018-01-24 17:15:48,257 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 17 [2018-01-24 17:15:48,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:15:48,257 INFO L432 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2018-01-24 17:15:48,257 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 17:15:48,257 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2018-01-24 17:15:48,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 17:15:48,258 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:15:48,258 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:15:48,258 INFO L371 AbstractCegarLoop]: === Iteration 5 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 17:15:48,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1933852231, now seen corresponding path program 1 times [2018-01-24 17:15:48,259 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:15:48,259 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:15:48,260 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:15:48,260 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:15:48,260 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:15:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:15:48,272 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:15:48,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:15:48,368 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:15:48,368 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 17:15:48,369 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2018-01-24 17:15:48,371 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [6], [11], [12], [13], [14], [17], [19], [28], [29], [30], [34], [39], [41], [79], [80], [81], [83] [2018-01-24 17:15:48,419 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 17:15:48,419 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 17:15:48,571 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 17:15:48,572 INFO L268 AbstractInterpreter]: Visited 20 different actions 27 times. Merged at 7 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 20 variables. [2018-01-24 17:15:48,581 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-24 17:15:48,582 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:15:48,582 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 17:15:48,592 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:15:48,592 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 17:15:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:15:48,623 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 17:15:48,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:15:48,665 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 17:15:48,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:15:48,743 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-01-24 17:15:48,743 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [8] total 14 [2018-01-24 17:15:48,743 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:15:48,743 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 17:15:48,743 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 17:15:48,744 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2018-01-24 17:15:48,744 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand 6 states. [2018-01-24 17:15:48,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:15:48,866 INFO L93 Difference]: Finished difference Result 124 states and 136 transitions. [2018-01-24 17:15:48,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 17:15:48,867 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-01-24 17:15:48,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:15:48,868 INFO L225 Difference]: With dead ends: 124 [2018-01-24 17:15:48,868 INFO L226 Difference]: Without dead ends: 74 [2018-01-24 17:15:48,869 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-01-24 17:15:48,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-01-24 17:15:48,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 65. [2018-01-24 17:15:48,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-01-24 17:15:48,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2018-01-24 17:15:48,884 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 22 [2018-01-24 17:15:48,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:15:48,885 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2018-01-24 17:15:48,885 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 17:15:48,885 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2018-01-24 17:15:48,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 17:15:48,886 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:15:48,886 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:15:48,886 INFO L371 AbstractCegarLoop]: === Iteration 6 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 17:15:48,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1693854175, now seen corresponding path program 1 times [2018-01-24 17:15:48,887 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:15:48,888 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:15:48,888 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:15:48,888 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:15:48,888 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:15:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:15:48,901 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:15:48,941 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-24 17:15:48,942 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:15:48,942 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 17:15:48,942 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 30 with the following transitions: [2018-01-24 17:15:48,942 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [11], [13], [14], [17], [19], [23], [24], [28], [29], [30], [34], [39], [40], [41], [43], [45], [79], [80], [81], [83], [84] [2018-01-24 17:15:48,944 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 17:15:48,944 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 17:15:49,201 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 17:15:49,201 INFO L268 AbstractInterpreter]: Visited 26 different actions 95 times. Merged at 16 different actions 44 times. Never widened. Found 7 fixpoints after 4 different actions. Largest state had 21 variables. [2018-01-24 17:15:49,215 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-24 17:15:49,215 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:15:49,215 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 17:15:49,225 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:15:49,226 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 17:15:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:15:49,243 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 17:15:49,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-24 17:15:49,268 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 17:15:49,305 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-24 17:15:49,335 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-01-24 17:15:49,335 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 7 [2018-01-24 17:15:49,336 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:15:49,336 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 17:15:49,336 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 17:15:49,337 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-01-24 17:15:49,337 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 5 states. [2018-01-24 17:15:49,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:15:49,397 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2018-01-24 17:15:49,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 17:15:49,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-24 17:15:49,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:15:49,399 INFO L225 Difference]: With dead ends: 76 [2018-01-24 17:15:49,399 INFO L226 Difference]: Without dead ends: 74 [2018-01-24 17:15:49,399 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-01-24 17:15:49,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-01-24 17:15:49,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 62. [2018-01-24 17:15:49,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-01-24 17:15:49,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2018-01-24 17:15:49,407 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 29 [2018-01-24 17:15:49,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:15:49,407 INFO L432 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2018-01-24 17:15:49,407 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 17:15:49,408 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2018-01-24 17:15:49,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-24 17:15:49,409 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:15:49,409 INFO L322 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2018-01-24 17:15:49,409 INFO L371 AbstractCegarLoop]: === Iteration 7 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 17:15:49,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1643098334, now seen corresponding path program 1 times [2018-01-24 17:15:49,410 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:15:49,411 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:15:49,411 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:15:49,412 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:15:49,412 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:15:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:15:49,424 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:15:49,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-24 17:15:49,460 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:15:49,460 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 17:15:49,460 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 38 with the following transitions: [2018-01-24 17:15:49,460 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [11], [13], [14], [17], [19], [23], [24], [28], [29], [30], [34], [37], [39], [41], [43], [45], [49], [53], [58], [60], [63], [65], [66], [67], [78], [79], [80], [81], [83], [84] [2018-01-24 17:15:49,462 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 17:15:49,462 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 17:15:49,727 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 17:15:49,728 INFO L268 AbstractInterpreter]: Visited 35 different actions 118 times. Merged at 25 different actions 57 times. Never widened. Found 8 fixpoints after 5 different actions. Largest state had 21 variables. [2018-01-24 17:15:49,729 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-24 17:15:49,730 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:15:49,730 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 17:15:49,738 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:15:49,738 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 17:15:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:15:49,758 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 17:15:49,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-24 17:15:49,767 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 17:15:49,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-24 17:15:49,824 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:15:49,824 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-24 17:15:49,828 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:15:49,828 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 17:15:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:15:49,854 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 17:15:49,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-24 17:15:49,859 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 17:15:49,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-24 17:15:49,919 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-24 17:15:49,919 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4] total 7 [2018-01-24 17:15:49,919 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-24 17:15:49,920 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 17:15:49,920 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 17:15:49,920 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-24 17:15:49,920 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 5 states. [2018-01-24 17:15:50,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:15:50,056 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions. [2018-01-24 17:15:50,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 17:15:50,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2018-01-24 17:15:50,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:15:50,058 INFO L225 Difference]: With dead ends: 104 [2018-01-24 17:15:50,058 INFO L226 Difference]: Without dead ends: 88 [2018-01-24 17:15:50,058 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-24 17:15:50,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-01-24 17:15:50,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 71. [2018-01-24 17:15:50,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-01-24 17:15:50,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2018-01-24 17:15:50,069 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 37 [2018-01-24 17:15:50,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:15:50,070 INFO L432 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2018-01-24 17:15:50,070 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 17:15:50,070 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2018-01-24 17:15:50,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-01-24 17:15:50,071 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:15:50,071 INFO L322 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:15:50,071 INFO L371 AbstractCegarLoop]: === Iteration 8 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 17:15:50,072 INFO L82 PathProgramCache]: Analyzing trace with hash 465858064, now seen corresponding path program 1 times [2018-01-24 17:15:50,072 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:15:50,073 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:15:50,073 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:15:50,073 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:15:50,073 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:15:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:15:50,088 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:15:50,182 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-01-24 17:15:50,183 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:15:50,183 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 17:15:50,183 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 41 with the following transitions: [2018-01-24 17:15:50,183 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [11], [12], [13], [14], [17], [19], [23], [24], [28], [29], [30], [34], [39], [41], [43], [45], [79], [80], [81], [83], [84] [2018-01-24 17:15:50,184 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 17:15:50,184 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 17:15:50,303 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 17:15:50,304 INFO L268 AbstractInterpreter]: Visited 26 different actions 98 times. Merged at 16 different actions 45 times. Never widened. Found 7 fixpoints after 4 different actions. Largest state had 21 variables. [2018-01-24 17:15:50,306 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-24 17:15:50,306 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:15:50,306 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 17:15:50,318 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:15:50,319 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 17:15:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:15:50,332 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 17:15:50,364 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-01-24 17:15:50,365 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 17:15:50,390 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-01-24 17:15:50,410 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:15:50,410 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 7 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-24 17:15:50,413 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:15:50,413 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 17:15:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:15:50,443 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 17:15:50,447 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-01-24 17:15:50,447 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 17:15:50,466 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-01-24 17:15:50,467 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-24 17:15:50,468 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 3, 3, 3] total 12 [2018-01-24 17:15:50,468 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-24 17:15:50,468 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-24 17:15:50,468 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-24 17:15:50,468 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2018-01-24 17:15:50,468 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand 11 states. [2018-01-24 17:15:50,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:15:50,632 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2018-01-24 17:15:50,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 17:15:50,633 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2018-01-24 17:15:50,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:15:50,634 INFO L225 Difference]: With dead ends: 91 [2018-01-24 17:15:50,634 INFO L226 Difference]: Without dead ends: 90 [2018-01-24 17:15:50,635 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-01-24 17:15:50,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-01-24 17:15:50,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 70. [2018-01-24 17:15:50,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-01-24 17:15:50,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 75 transitions. [2018-01-24 17:15:50,645 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 75 transitions. Word has length 40 [2018-01-24 17:15:50,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:15:50,645 INFO L432 AbstractCegarLoop]: Abstraction has 70 states and 75 transitions. [2018-01-24 17:15:50,653 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-24 17:15:50,653 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 75 transitions. [2018-01-24 17:15:50,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-24 17:15:50,654 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:15:50,654 INFO L322 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:15:50,654 INFO L371 AbstractCegarLoop]: === Iteration 9 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 17:15:50,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1556698143, now seen corresponding path program 1 times [2018-01-24 17:15:50,655 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:15:50,656 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:15:50,656 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:15:50,657 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:15:50,657 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:15:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:15:50,674 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:15:50,927 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-01-24 17:15:50,928 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:15:50,928 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 17:15:50,928 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 42 with the following transitions: [2018-01-24 17:15:50,928 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [11], [13], [14], [16], [17], [19], [23], [24], [28], [29], [30], [34], [39], [41], [43], [45], [79], [80], [81], [83], [84] [2018-01-24 17:15:50,929 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 17:15:50,930 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 17:15:51,078 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 17:15:51,078 INFO L268 AbstractInterpreter]: Visited 26 different actions 98 times. Merged at 16 different actions 45 times. Never widened. Found 7 fixpoints after 4 different actions. Largest state had 21 variables. [2018-01-24 17:15:51,094 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-24 17:15:51,094 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:15:51,094 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 17:15:51,106 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:15:51,106 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 17:15:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:15:51,132 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 17:15:51,157 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 17:15:51,159 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 17:15:51,176 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 17:15:51,176 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 17:15:51,394 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-01-24 17:15:51,395 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 17:15:51,482 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-01-24 17:15:51,502 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:15:51,502 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 9 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-24 17:15:51,505 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:15:51,505 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 17:15:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:15:51,546 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 17:15:51,559 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 17:15:51,560 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 17:15:51,563 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 17:15:51,563 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 17:15:51,587 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-01-24 17:15:51,587 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 17:15:51,607 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-01-24 17:15:51,608 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-24 17:15:51,608 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 5, 6, 5] total 16 [2018-01-24 17:15:51,608 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-24 17:15:51,609 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-24 17:15:51,609 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-24 17:15:51,610 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-01-24 17:15:51,610 INFO L87 Difference]: Start difference. First operand 70 states and 75 transitions. Second operand 13 states. [2018-01-24 17:15:51,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:15:51,847 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2018-01-24 17:15:51,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 17:15:51,848 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2018-01-24 17:15:51,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:15:51,848 INFO L225 Difference]: With dead ends: 89 [2018-01-24 17:15:51,848 INFO L226 Difference]: Without dead ends: 88 [2018-01-24 17:15:51,849 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 152 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2018-01-24 17:15:51,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-01-24 17:15:51,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 65. [2018-01-24 17:15:51,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-01-24 17:15:51,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2018-01-24 17:15:51,857 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 41 [2018-01-24 17:15:51,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:15:51,857 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2018-01-24 17:15:51,857 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-24 17:15:51,858 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2018-01-24 17:15:51,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-01-24 17:15:51,858 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:15:51,859 INFO L322 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:15:51,859 INFO L371 AbstractCegarLoop]: === Iteration 10 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-24 17:15:51,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1898563809, now seen corresponding path program 2 times [2018-01-24 17:15:51,859 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:15:51,859 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:15:51,860 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:15:51,860 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:15:51,860 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:15:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:15:51,873 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:15:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-01-24 17:15:51,909 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:15:51,909 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 17:15:51,909 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-01-24 17:15:51,909 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-24 17:15:51,909 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:15:51,909 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 17:15:51,918 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-24 17:15:51,918 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-01-24 17:15:51,929 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 17:15:51,930 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 17:15:51,933 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 17:15:51,966 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 17:15:51,967 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-01-24 17:15:51,967 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 17:15:51,969 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-24 17:15:51,970 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-01-24 17:15:52,011 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 17:15:52,011 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-01-24 17:15:52,011 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 17:15:52,013 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-24 17:15:52,013 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-01-24 17:15:52,084 WARN L1029 $PredicateComparison]: unable to prove that (exists ((|main_~#mask~3.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |main_~#mask~3.base| 0)) (= 0 (select |c_old(#valid)| |main_~#mask~3.base|)))) is different from true [2018-01-24 17:15:52,089 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-01-24 17:15:52,089 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 17:15:52,116 WARN L1007 $PredicateComparison]: unable to prove that (forall ((|v_main_~#mask~3.base_15| Int)) (or (= (store |c_#valid| |v_main_~#mask~3.base_15| 0) |c_old(#valid)|) (not (= (select |c_#valid| |v_main_~#mask~3.base_15|) 0)))) is different from false [2018-01-24 17:15:52,124 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-01-24 17:15:52,144 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-01-24 17:15:52,144 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [5] total 11 [2018-01-24 17:15:52,145 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:15:52,145 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 17:15:52,145 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 17:15:52,145 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=54, Unknown=2, NotChecked=30, Total=110 [2018-01-24 17:15:52,145 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 6 states. [2018-01-24 17:15:52,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:15:52,204 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2018-01-24 17:15:52,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 17:15:52,205 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2018-01-24 17:15:52,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:15:52,205 INFO L225 Difference]: With dead ends: 66 [2018-01-24 17:15:52,205 INFO L226 Difference]: Without dead ends: 0 [2018-01-24 17:15:52,206 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 90 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=85, Unknown=2, NotChecked=38, Total=156 [2018-01-24 17:15:52,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-24 17:15:52,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-24 17:15:52,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-24 17:15:52,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-24 17:15:52,206 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2018-01-24 17:15:52,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:15:52,206 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-24 17:15:52,206 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 17:15:52,207 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-24 17:15:52,207 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-24 17:15:52,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-24 17:15:52,466 WARN L146 SmtUtils]: Spent 177ms on a formula simplification. DAG size of input: 65 DAG size of output 46 [2018-01-24 17:15:52,602 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 37) no Hoare annotation was computed. [2018-01-24 17:15:52,602 INFO L397 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 37) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-01-24 17:15:52,603 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 37) no Hoare annotation was computed. [2018-01-24 17:15:52,603 INFO L401 ceAbstractionStarter]: For program point L17''''(lines 17 19) no Hoare annotation was computed. [2018-01-24 17:15:52,603 INFO L401 ceAbstractionStarter]: For program point fooFINAL(lines 14 21) no Hoare annotation was computed. [2018-01-24 17:15:52,603 INFO L401 ceAbstractionStarter]: For program point fooEXIT(lines 14 21) no Hoare annotation was computed. [2018-01-24 17:15:52,603 INFO L397 ceAbstractionStarter]: At program point L17'''(lines 17 19) the Hoare annotation is: (let ((.cse0 (not (= 0 |foo_#in~b.offset|))) (.cse7 (= foo_~i~1 0)) (.cse1 (not (= (select |#valid| |foo_#in~b.base|) 1))) (.cse2 (not (= 32 (select |#length| |foo_#in~b.base|))))) (and (or (< 31 |foo_#in~size|) .cse0 .cse1 .cse2 (let ((.cse3 (= 1 (select |#valid| foo_~b.base))) (.cse4 (select |#length| foo_~b.base)) (.cse5 (<= foo_~size 31)) (.cse6 (= foo_~b.offset 0))) (or (and .cse3 (= 32 .cse4) .cse5 .cse6 .cse7) (and (and .cse3 (<= 1 foo_~i~1)) (= .cse4 32) .cse5 .cse6)))) (or .cse0 (and (<= foo_~size 0) (= 1 foo_~i~1)) (and (= foo_~size 0) .cse7) .cse1 (not (= 0 |foo_#in~size|)) .cse2))) [2018-01-24 17:15:52,603 INFO L404 ceAbstractionStarter]: At program point fooENTRY(lines 14 21) the Hoare annotation is: true [2018-01-24 17:15:52,603 INFO L401 ceAbstractionStarter]: For program point fooErr2RequiresViolation(lines 1 37) no Hoare annotation was computed. [2018-01-24 17:15:52,603 INFO L401 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-01-24 17:15:52,603 INFO L401 ceAbstractionStarter]: For program point fooErr1RequiresViolation(lines 1 37) no Hoare annotation was computed. [2018-01-24 17:15:52,603 INFO L401 ceAbstractionStarter]: For program point L17(lines 17 19) no Hoare annotation was computed. [2018-01-24 17:15:52,603 INFO L401 ceAbstractionStarter]: For program point L17''(lines 17 19) no Hoare annotation was computed. [2018-01-24 17:15:52,603 INFO L401 ceAbstractionStarter]: For program point L18''(line 18) no Hoare annotation was computed. [2018-01-24 17:15:52,603 INFO L401 ceAbstractionStarter]: For program point L18'(line 18) no Hoare annotation was computed. [2018-01-24 17:15:52,604 INFO L401 ceAbstractionStarter]: For program point fooErr0AssertViolation(line 18) no Hoare annotation was computed. [2018-01-24 17:15:52,604 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 37) the Hoare annotation is: true [2018-01-24 17:15:52,604 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 37) no Hoare annotation was computed. [2018-01-24 17:15:52,604 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 37) the Hoare annotation is: true [2018-01-24 17:15:52,604 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 37) no Hoare annotation was computed. [2018-01-24 17:15:52,604 INFO L401 ceAbstractionStarter]: For program point L25'''''(line 25) no Hoare annotation was computed. [2018-01-24 17:15:52,604 INFO L401 ceAbstractionStarter]: For program point mainErr0AssertViolation(line 27) no Hoare annotation was computed. [2018-01-24 17:15:52,604 INFO L401 ceAbstractionStarter]: For program point mainErr2EnsuresViolation(lines 23 35) no Hoare annotation was computed. [2018-01-24 17:15:52,604 INFO L401 ceAbstractionStarter]: For program point mainErr1AssertViolation(line 30) no Hoare annotation was computed. [2018-01-24 17:15:52,604 INFO L401 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-01-24 17:15:52,604 INFO L401 ceAbstractionStarter]: For program point L27(line 27) no Hoare annotation was computed. [2018-01-24 17:15:52,604 INFO L401 ceAbstractionStarter]: For program point L26(lines 26 28) no Hoare annotation was computed. [2018-01-24 17:15:52,604 INFO L401 ceAbstractionStarter]: For program point L25'''(line 25) no Hoare annotation was computed. [2018-01-24 17:15:52,604 INFO L401 ceAbstractionStarter]: For program point L29(lines 29 33) no Hoare annotation was computed. [2018-01-24 17:15:52,604 INFO L397 ceAbstractionStarter]: At program point L27'(line 27) the Hoare annotation is: (let ((.cse0 (= 32 (select |#length| |main_~#mask~3.base|))) (.cse1 (= (store |old(#valid)| |main_~#mask~3.base| 1) |#valid|)) (.cse2 (= 0 (select |old(#valid)| |main_~#mask~3.base|))) (.cse3 (= 0 |main_~#mask~3.offset|))) (or (and (<= 1 main_~i~3) .cse0 .cse1 .cse2 .cse3 (<= main_~i~3 31)) (and .cse0 .cse1 (= main_~i~3 0) .cse2 .cse3))) [2018-01-24 17:15:52,605 INFO L401 ceAbstractionStarter]: For program point L25'(line 25) no Hoare annotation was computed. [2018-01-24 17:15:52,605 INFO L397 ceAbstractionStarter]: At program point L29'''(lines 29 33) the Hoare annotation is: (let ((.cse0 (= 32 (select |#length| |main_~#mask~3.base|))) (.cse1 (= (store |old(#valid)| |main_~#mask~3.base| 1) |#valid|)) (.cse2 (= 0 (select |old(#valid)| |main_~#mask~3.base|))) (.cse3 (= 0 |main_~#mask~3.offset|))) (or (and (<= 1 main_~i~3) .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse1 (= main_~i~3 0) .cse2 .cse3))) [2018-01-24 17:15:52,605 INFO L401 ceAbstractionStarter]: For program point L25''''(line 25) no Hoare annotation was computed. [2018-01-24 17:15:52,605 INFO L401 ceAbstractionStarter]: For program point L26''''(lines 26 28) no Hoare annotation was computed. [2018-01-24 17:15:52,605 INFO L401 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2018-01-24 17:15:52,605 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 23 35) no Hoare annotation was computed. [2018-01-24 17:15:52,605 INFO L401 ceAbstractionStarter]: For program point L25''(line 25) no Hoare annotation was computed. [2018-01-24 17:15:52,605 INFO L401 ceAbstractionStarter]: For program point L31(line 31) no Hoare annotation was computed. [2018-01-24 17:15:52,605 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 23 35) no Hoare annotation was computed. [2018-01-24 17:15:52,605 INFO L397 ceAbstractionStarter]: At program point mainENTRY(lines 23 35) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-01-24 17:15:52,605 INFO L401 ceAbstractionStarter]: For program point L29''''(lines 29 33) no Hoare annotation was computed. [2018-01-24 17:15:52,605 INFO L401 ceAbstractionStarter]: For program point L29''(lines 29 33) no Hoare annotation was computed. [2018-01-24 17:15:52,605 INFO L401 ceAbstractionStarter]: For program point L26''(lines 26 28) no Hoare annotation was computed. [2018-01-24 17:15:52,605 INFO L401 ceAbstractionStarter]: For program point L27''(line 27) no Hoare annotation was computed. [2018-01-24 17:15:52,606 INFO L397 ceAbstractionStarter]: At program point L26'''(lines 26 28) the Hoare annotation is: (let ((.cse0 (= 32 (select |#length| |main_~#mask~3.base|))) (.cse1 (= (store |old(#valid)| |main_~#mask~3.base| 1) |#valid|)) (.cse2 (= 0 (select |old(#valid)| |main_~#mask~3.base|))) (.cse3 (= 0 |main_~#mask~3.offset|))) (or (and (<= 1 main_~i~3) .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse1 (= main_~i~3 0) .cse2 .cse3))) [2018-01-24 17:15:52,606 INFO L401 ceAbstractionStarter]: For program point L30'(lines 30 32) no Hoare annotation was computed. [2018-01-24 17:15:52,610 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,611 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,611 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,611 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,614 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,614 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,614 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,615 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,617 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,617 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,618 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,619 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,620 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,620 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,621 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,622 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 05:15:52 BoogieIcfgContainer [2018-01-24 17:15:52,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 17:15:52,624 INFO L168 Benchmark]: Toolchain (without parser) took 6002.66 ms. Allocated memory was 303.6 MB in the beginning and 559.9 MB in the end (delta: 256.4 MB). Free memory was 264.6 MB in the beginning and 380.4 MB in the end (delta: -115.8 MB). Peak memory consumption was 140.6 MB. Max. memory is 5.3 GB. [2018-01-24 17:15:52,625 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 303.6 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 17:15:52,625 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.70 ms. Allocated memory is still 303.6 MB. Free memory was 263.6 MB in the beginning and 255.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. [2018-01-24 17:15:52,626 INFO L168 Benchmark]: Boogie Preprocessor took 30.80 ms. Allocated memory is still 303.6 MB. Free memory was 255.6 MB in the beginning and 253.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 5.3 GB. [2018-01-24 17:15:52,626 INFO L168 Benchmark]: RCFGBuilder took 220.41 ms. Allocated memory is still 303.6 MB. Free memory was 253.5 MB in the beginning and 238.8 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. [2018-01-24 17:15:52,626 INFO L168 Benchmark]: TraceAbstraction took 5573.72 ms. Allocated memory was 303.6 MB in the beginning and 559.9 MB in the end (delta: 256.4 MB). Free memory was 237.8 MB in the beginning and 380.4 MB in the end (delta: -142.6 MB). Peak memory consumption was 113.8 MB. Max. memory is 5.3 GB. [2018-01-24 17:15:52,628 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 303.6 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 170.70 ms. Allocated memory is still 303.6 MB. Free memory was 263.6 MB in the beginning and 255.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 30.80 ms. Allocated memory is still 303.6 MB. Free memory was 255.6 MB in the beginning and 253.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 5.3 GB. * RCFGBuilder took 220.41 ms. Allocated memory is still 303.6 MB. Free memory was 253.5 MB in the beginning and 238.8 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 5573.72 ms. Allocated memory was 303.6 MB in the beginning and 559.9 MB in the end (delta: 256.4 MB). Free memory was 237.8 MB in the beginning and 380.4 MB in the end (delta: -142.6 MB). Peak memory consumption was 113.8 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 19 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 139 LocStat_NO_SUPPORTING_DISEQUALITIES : 36 LocStat_NO_DISJUNCTIONS : -38 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 26 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 31 TransStat_NO_SUPPORTING_DISEQUALITIES : 4 TransStat_NO_DISJUNCTIONS : 27 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.814853 RENAME_VARIABLES(MILLISECONDS) : 0.575273 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.754552 PROJECTAWAY(MILLISECONDS) : 0.357376 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001827 DISJOIN(MILLISECONDS) : 2.410813 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.627241 ADD_EQUALITY(MILLISECONDS) : 0.056976 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.085502 #CONJOIN_DISJUNCTIVE : 36 #RENAME_VARIABLES : 65 #UNFREEZE : 0 #CONJOIN : 59 #PROJECTAWAY : 60 #ADD_WEAK_EQUALITY : 4 #DISJOIN : 1 #RENAME_VARIABLES_DISJUNCTIVE : 63 #ADD_EQUALITY : 31 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 1 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 24 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 165 LocStat_NO_SUPPORTING_DISEQUALITIES : 38 LocStat_NO_DISJUNCTIONS : -48 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 32 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 36 TransStat_NO_SUPPORTING_DISEQUALITIES : 4 TransStat_NO_DISJUNCTIONS : 33 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.466386 RENAME_VARIABLES(MILLISECONDS) : 0.396064 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.416589 PROJECTAWAY(MILLISECONDS) : 0.255701 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001392 DISJOIN(MILLISECONDS) : 0.331930 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.433828 ADD_EQUALITY(MILLISECONDS) : 0.052714 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.016615 #CONJOIN_DISJUNCTIVE : 116 #RENAME_VARIABLES : 255 #UNFREEZE : 0 #CONJOIN : 180 #PROJECTAWAY : 182 #ADD_WEAK_EQUALITY : 5 #DISJOIN : 27 #RENAME_VARIABLES_DISJUNCTIVE : 251 #ADD_EQUALITY : 36 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 1 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 33 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 218 LocStat_NO_SUPPORTING_DISEQUALITIES : 60 LocStat_NO_DISJUNCTIONS : -66 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 41 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 38 TransStat_NO_SUPPORTING_DISEQUALITIES : 6 TransStat_NO_DISJUNCTIONS : 41 TransStat_MAX_NO_DISJUNCTIONS : 1 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.360657 RENAME_VARIABLES(MILLISECONDS) : 0.263959 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.329736 PROJECTAWAY(MILLISECONDS) : 0.256176 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001260 DISJOIN(MILLISECONDS) : 0.324175 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.294270 ADD_EQUALITY(MILLISECONDS) : 0.024560 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.013308 #CONJOIN_DISJUNCTIVE : 144 #RENAME_VARIABLES : 307 #UNFREEZE : 0 #CONJOIN : 204 #PROJECTAWAY : 213 #ADD_WEAK_EQUALITY : 6 #DISJOIN : 22 #RENAME_VARIABLES_DISJUNCTIVE : 307 #ADD_EQUALITY : 38 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 3 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 24 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 170 LocStat_NO_SUPPORTING_DISEQUALITIES : 38 LocStat_NO_DISJUNCTIONS : -48 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 32 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 36 TransStat_NO_SUPPORTING_DISEQUALITIES : 4 TransStat_NO_DISJUNCTIONS : 33 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.180099 RENAME_VARIABLES(MILLISECONDS) : 0.158396 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.162964 PROJECTAWAY(MILLISECONDS) : 0.126585 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.002063 DISJOIN(MILLISECONDS) : 0.177963 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.176527 ADD_EQUALITY(MILLISECONDS) : 0.019286 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.013223 #CONJOIN_DISJUNCTIVE : 118 #RENAME_VARIABLES : 261 #UNFREEZE : 0 #CONJOIN : 184 #PROJECTAWAY : 186 #ADD_WEAK_EQUALITY : 5 #DISJOIN : 27 #RENAME_VARIABLES_DISJUNCTIVE : 255 #ADD_EQUALITY : 36 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 1 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 24 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 170 LocStat_NO_SUPPORTING_DISEQUALITIES : 38 LocStat_NO_DISJUNCTIONS : -48 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 32 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 36 TransStat_NO_SUPPORTING_DISEQUALITIES : 4 TransStat_NO_DISJUNCTIONS : 33 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.289395 RENAME_VARIABLES(MILLISECONDS) : 0.213637 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.266693 PROJECTAWAY(MILLISECONDS) : 0.143564 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001469 DISJOIN(MILLISECONDS) : 0.260801 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.237425 ADD_EQUALITY(MILLISECONDS) : 0.021330 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.010352 #CONJOIN_DISJUNCTIVE : 118 #RENAME_VARIABLES : 261 #UNFREEZE : 0 #CONJOIN : 184 #PROJECTAWAY : 186 #ADD_WEAK_EQUALITY : 5 #DISJOIN : 27 #RENAME_VARIABLES_DISJUNCTIVE : 255 #ADD_EQUALITY : 36 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 1 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 27]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 23]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 30]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant [2018-01-24 17:15:52,638 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,639 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,639 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,639 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,641 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,641 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,641 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,641 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length Derived loop invariant: ((((31 < \old(size) || !(0 == b)) || !(\valid[b] == 1)) || !(32 == unknown-#length-unknown[b])) || ((((1 == \valid[b] && 32 == unknown-#length-unknown[b]) && size <= 31) && b == 0) && i == 0) || ((((1 == \valid[b] && 1 <= i) && unknown-#length-unknown[b] == 32) && size <= 31) && b == 0)) && (((((!(0 == b) || (size <= 0 && 1 == i)) || (size == 0 && i == 0)) || !(\valid[b] == 1)) || !(0 == \old(size))) || !(32 == unknown-#length-unknown[b])) - InvariantResult [Line: 29]: Loop Invariant [2018-01-24 17:15:52,643 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,643 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,644 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,644 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length Derived loop invariant: ((((1 <= i && 32 == unknown-#length-unknown[mask]) && \old(\valid)[mask := 1] == \valid) && 0 == \old(\valid)[mask]) && 0 == mask) || ((((32 == unknown-#length-unknown[mask] && \old(\valid)[mask := 1] == \valid) && i == 0) && 0 == \old(\valid)[mask]) && 0 == mask) - InvariantResult [Line: 26]: Loop Invariant [2018-01-24 17:15:52,645 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,645 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,646 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 17:15:52,646 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length Derived loop invariant: ((((1 <= i && 32 == unknown-#length-unknown[mask]) && \old(\valid)[mask := 1] == \valid) && 0 == \old(\valid)[mask]) && 0 == mask) || ((((32 == unknown-#length-unknown[mask] && \old(\valid)[mask := 1] == \valid) && i == 0) && 0 == \old(\valid)[mask]) && 0 == mask) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 46 locations, 6 error locations. SAFE Result, 5.5s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 358 SDtfs, 532 SDslu, 830 SDs, 0 SdLazy, 633 SolverSat, 67 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 733 GetRequests, 638 SyntacticMatches, 11 SemanticMatches, 84 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.0s AbstIntTime, 5 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 124 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 17 PreInvPairs, 27 NumberOfFragments, 252 HoareAnnotationTreeSize, 17 FomulaSimplifications, 301 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 506 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 615 NumberOfCodeBlocks, 585 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 923 ConstructedInterpolants, 46 QuantifiedInterpolants, 133687 SizeOfPredicates, 12 NumberOfNonLiveVariables, 830 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 28 InterpolantComputations, 10 PerfectInterpolantSequences, 286/344 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_17-15-52-651.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-VPDomainBenchmark-0-2018-01-24_17-15-52-651.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_17-15-52-651.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-VPDomainBenchmark-1-2018-01-24_17-15-52-651.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-1-2018-01-24_17-15-52-651.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-VPDomainBenchmark-2-2018-01-24_17-15-52-651.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-2-2018-01-24_17-15-52-651.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-VPDomainBenchmark-3-2018-01-24_17-15-52-651.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-3-2018-01-24_17-15-52-651.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-VPDomainBenchmark-4-2018-01-24_17-15-52-651.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-4-2018-01-24_17-15-52-651.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_17-15-52-651.csv Received shutdown request...