java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-read.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 08:40:40,916 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 08:40:40,918 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 08:40:40,932 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 08:40:40,933 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 08:40:40,934 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 08:40:40,935 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 08:40:40,936 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 08:40:40,938 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 08:40:40,939 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 08:40:40,940 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 08:40:40,940 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 08:40:40,941 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 08:40:40,942 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 08:40:40,943 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 08:40:40,946 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 08:40:40,948 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 08:40:40,950 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 08:40:40,951 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 08:40:40,953 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 08:40:40,955 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-21 08:40:40,955 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-21 08:40:40,956 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-21 08:40:40,957 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-21 08:40:40,957 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-21 08:40:40,959 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-21 08:40:40,959 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-21 08:40:40,960 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-21 08:40:40,960 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-21 08:40:40,960 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 08:40:40,961 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 08:40:40,961 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf [2018-01-21 08:40:40,970 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 08:40:40,970 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 08:40:40,971 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 08:40:40,971 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 08:40:40,971 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 08:40:40,971 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 08:40:40,971 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-21 08:40:40,971 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 08:40:40,971 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 08:40:40,972 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 08:40:40,972 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 08:40:40,972 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 08:40:40,972 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 08:40:40,972 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 08:40:40,973 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 08:40:40,973 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 08:40:40,973 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 08:40:40,973 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 08:40:40,973 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 08:40:40,973 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 08:40:40,973 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 08:40:40,973 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 08:40:40,974 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 08:40:40,974 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 08:40:40,974 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 08:40:40,974 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 08:40:40,974 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 08:40:40,975 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 08:40:40,975 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 08:40:40,975 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 08:40:40,975 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 08:40:40,975 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 08:40:40,975 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 08:40:40,975 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 08:40:40,975 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 08:40:40,976 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 08:40:40,976 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 08:40:40,976 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 08:40:40,976 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 08:40:40,977 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 08:40:41,009 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 08:40:41,020 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 08:40:41,023 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 08:40:41,025 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 08:40:41,025 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 08:40:41,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-read.c [2018-01-21 08:40:41,143 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 08:40:41,146 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 08:40:41,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 08:40:41,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 08:40:41,153 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 08:40:41,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:40:41" (1/1) ... [2018-01-21 08:40:41,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fa0c089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:40:41, skipping insertion in model container [2018-01-21 08:40:41,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:40:41" (1/1) ... [2018-01-21 08:40:41,171 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:40:41,187 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:40:41,310 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:40:41,329 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:40:41,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:40:41 WrapperNode [2018-01-21 08:40:41,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 08:40:41,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 08:40:41,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 08:40:41,338 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 08:40:41,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:40:41" (1/1) ... [2018-01-21 08:40:41,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:40:41" (1/1) ... [2018-01-21 08:40:41,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:40:41" (1/1) ... [2018-01-21 08:40:41,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:40:41" (1/1) ... [2018-01-21 08:40:41,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:40:41" (1/1) ... [2018-01-21 08:40:41,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:40:41" (1/1) ... [2018-01-21 08:40:41,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:40:41" (1/1) ... [2018-01-21 08:40:41,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 08:40:41,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 08:40:41,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 08:40:41,371 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 08:40:41,372 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:40:41" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 08:40:41,421 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 08:40:41,421 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 08:40:41,422 INFO L136 BoogieDeclarations]: Found implementation of procedure bar [2018-01-21 08:40:41,422 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-01-21 08:40:41,422 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 08:40:41,422 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 08:40:41,422 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 08:40:41,422 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 08:40:41,423 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 08:40:41,423 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 08:40:41,423 INFO L128 BoogieDeclarations]: Found specification of procedure bar [2018-01-21 08:40:41,423 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-01-21 08:40:41,423 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 08:40:41,423 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 08:40:41,424 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 08:40:41,638 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 08:40:41,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:40:41 BoogieIcfgContainer [2018-01-21 08:40:41,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 08:40:41,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 08:40:41,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 08:40:41,641 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 08:40:41,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 08:40:41" (1/3) ... [2018-01-21 08:40:41,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2395afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:40:41, skipping insertion in model container [2018-01-21 08:40:41,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:40:41" (2/3) ... [2018-01-21 08:40:41,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2395afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:40:41, skipping insertion in model container [2018-01-21 08:40:41,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:40:41" (3/3) ... [2018-01-21 08:40:41,645 INFO L105 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_false-valid-deref-read.c [2018-01-21 08:40:41,651 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 08:40:41,657 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-01-21 08:40:41,693 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:40:41,693 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:40:41,693 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:40:41,693 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:40:41,693 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:40:41,693 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:40:41,694 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:40:41,694 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == barErr0EnsuresViolation======== [2018-01-21 08:40:41,695 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:40:41,715 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2018-01-21 08:40:41,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-21 08:40:41,721 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:40:41,722 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:40:41,722 INFO L371 AbstractCegarLoop]: === Iteration 1 === [barErr0EnsuresViolation]=== [2018-01-21 08:40:41,726 INFO L82 PathProgramCache]: Analyzing trace with hash -492377012, now seen corresponding path program 1 times [2018-01-21 08:40:41,728 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:40:41,777 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:40:41,777 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:40:41,778 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:40:41,778 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:40:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:40:41,830 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:40:41,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:40:41,874 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:40:41,874 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 08:40:41,874 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:40:41,877 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 08:40:41,888 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 08:40:41,888 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:40:41,890 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2018-01-21 08:40:41,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:40:41,919 INFO L93 Difference]: Finished difference Result 114 states and 135 transitions. [2018-01-21 08:40:41,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 08:40:41,920 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-01-21 08:40:41,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:40:41,926 INFO L225 Difference]: With dead ends: 114 [2018-01-21 08:40:41,926 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 08:40:41,929 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:40:41,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 08:40:41,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 08:40:41,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 08:40:41,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 08:40:41,950 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-01-21 08:40:41,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:40:41,950 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 08:40:41,951 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 08:40:41,951 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 08:40:41,951 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 08:40:41,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-21 08:40:42,061 INFO L404 ceAbstractionStarter]: At program point L13'''(lines 13 15) the Hoare annotation is: true [2018-01-21 08:40:42,061 INFO L401 ceAbstractionStarter]: For program point barErr0EnsuresViolation(lines 11 17) no Hoare annotation was computed. [2018-01-21 08:40:42,062 INFO L401 ceAbstractionStarter]: For program point L13''(lines 13 15) no Hoare annotation was computed. [2018-01-21 08:40:42,062 INFO L401 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-01-21 08:40:42,062 INFO L401 ceAbstractionStarter]: For program point L13(lines 13 15) no Hoare annotation was computed. [2018-01-21 08:40:42,062 INFO L404 ceAbstractionStarter]: At program point barENTRY(lines 11 17) the Hoare annotation is: true [2018-01-21 08:40:42,062 INFO L401 ceAbstractionStarter]: For program point L13''''(lines 13 15) no Hoare annotation was computed. [2018-01-21 08:40:42,062 INFO L401 ceAbstractionStarter]: For program point barFINAL(lines 11 17) no Hoare annotation was computed. [2018-01-21 08:40:42,063 INFO L401 ceAbstractionStarter]: For program point L14'(line 14) no Hoare annotation was computed. [2018-01-21 08:40:42,063 INFO L401 ceAbstractionStarter]: For program point barEXIT(lines 11 17) no Hoare annotation was computed. [2018-01-21 08:40:42,063 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 43) no Hoare annotation was computed. [2018-01-21 08:40:42,063 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 43) no Hoare annotation was computed. [2018-01-21 08:40:42,063 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 43) the Hoare annotation is: true [2018-01-21 08:40:42,063 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 43) no Hoare annotation was computed. [2018-01-21 08:40:42,063 INFO L401 ceAbstractionStarter]: For program point fooEXIT(lines 20 29) no Hoare annotation was computed. [2018-01-21 08:40:42,064 INFO L401 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-01-21 08:40:42,064 INFO L401 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-01-21 08:40:42,064 INFO L401 ceAbstractionStarter]: For program point L22(lines 22 24) no Hoare annotation was computed. [2018-01-21 08:40:42,064 INFO L401 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-01-21 08:40:42,064 INFO L401 ceAbstractionStarter]: For program point L23'(line 23) no Hoare annotation was computed. [2018-01-21 08:40:42,064 INFO L401 ceAbstractionStarter]: For program point L21'''''(line 21) no Hoare annotation was computed. [2018-01-21 08:40:42,064 INFO L401 ceAbstractionStarter]: For program point L25'(lines 25 27) no Hoare annotation was computed. [2018-01-21 08:40:42,065 INFO L401 ceAbstractionStarter]: For program point L21'''(line 21) no Hoare annotation was computed. [2018-01-21 08:40:42,065 INFO L401 ceAbstractionStarter]: For program point L21'(line 21) no Hoare annotation was computed. [2018-01-21 08:40:42,065 INFO L401 ceAbstractionStarter]: For program point fooFINAL(lines 20 29) no Hoare annotation was computed. [2018-01-21 08:40:42,065 INFO L404 ceAbstractionStarter]: At program point fooENTRY(lines 20 29) the Hoare annotation is: true [2018-01-21 08:40:42,065 INFO L401 ceAbstractionStarter]: For program point L22''(lines 22 24) no Hoare annotation was computed. [2018-01-21 08:40:42,065 INFO L401 ceAbstractionStarter]: For program point L23''(line 23) no Hoare annotation was computed. [2018-01-21 08:40:42,065 INFO L401 ceAbstractionStarter]: For program point L21''(line 21) no Hoare annotation was computed. [2018-01-21 08:40:42,066 INFO L404 ceAbstractionStarter]: At program point L22''''(lines 22 24) the Hoare annotation is: true [2018-01-21 08:40:42,066 INFO L404 ceAbstractionStarter]: At program point L22'''(lines 22 24) the Hoare annotation is: true [2018-01-21 08:40:42,066 INFO L401 ceAbstractionStarter]: For program point fooErr0EnsuresViolation(lines 20 29) no Hoare annotation was computed. [2018-01-21 08:40:42,066 INFO L401 ceAbstractionStarter]: For program point L21''''(line 21) no Hoare annotation was computed. [2018-01-21 08:40:42,066 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 43) the Hoare annotation is: true [2018-01-21 08:40:42,066 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 43) no Hoare annotation was computed. [2018-01-21 08:40:42,067 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 43) the Hoare annotation is: true [2018-01-21 08:40:42,067 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 43) no Hoare annotation was computed. [2018-01-21 08:40:42,067 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 43) no Hoare annotation was computed. [2018-01-21 08:40:42,067 INFO L404 ceAbstractionStarter]: At program point L36''(lines 36 40) the Hoare annotation is: true [2018-01-21 08:40:42,067 INFO L401 ceAbstractionStarter]: For program point L33''(lines 33 35) no Hoare annotation was computed. [2018-01-21 08:40:42,067 INFO L401 ceAbstractionStarter]: For program point L34''(line 34) no Hoare annotation was computed. [2018-01-21 08:40:42,068 INFO L404 ceAbstractionStarter]: At program point L33'''(lines 33 35) the Hoare annotation is: true [2018-01-21 08:40:42,068 INFO L401 ceAbstractionStarter]: For program point L32''(line 32) no Hoare annotation was computed. [2018-01-21 08:40:42,068 INFO L401 ceAbstractionStarter]: For program point L37'(line 37) no Hoare annotation was computed. [2018-01-21 08:40:42,068 INFO L401 ceAbstractionStarter]: For program point L32''''(line 32) no Hoare annotation was computed. [2018-01-21 08:40:42,068 INFO L401 ceAbstractionStarter]: For program point L32'''''(line 32) no Hoare annotation was computed. [2018-01-21 08:40:42,068 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 31 42) no Hoare annotation was computed. [2018-01-21 08:40:42,068 INFO L401 ceAbstractionStarter]: For program point L36'''(lines 36 40) no Hoare annotation was computed. [2018-01-21 08:40:42,069 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 31 42) no Hoare annotation was computed. [2018-01-21 08:40:42,069 INFO L401 ceAbstractionStarter]: For program point L32(line 32) no Hoare annotation was computed. [2018-01-21 08:40:42,069 INFO L401 ceAbstractionStarter]: For program point L32'''(line 32) no Hoare annotation was computed. [2018-01-21 08:40:42,069 INFO L404 ceAbstractionStarter]: At program point L34(line 34) the Hoare annotation is: true [2018-01-21 08:40:42,069 INFO L401 ceAbstractionStarter]: For program point L33(lines 33 35) no Hoare annotation was computed. [2018-01-21 08:40:42,069 INFO L401 ceAbstractionStarter]: For program point L34'''(line 34) no Hoare annotation was computed. [2018-01-21 08:40:42,070 INFO L401 ceAbstractionStarter]: For program point L33''''(lines 33 35) no Hoare annotation was computed. [2018-01-21 08:40:42,070 INFO L401 ceAbstractionStarter]: For program point L36(lines 36 40) no Hoare annotation was computed. [2018-01-21 08:40:42,070 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 31 42) no Hoare annotation was computed. [2018-01-21 08:40:42,070 INFO L404 ceAbstractionStarter]: At program point mainENTRY(lines 31 42) the Hoare annotation is: true [2018-01-21 08:40:42,070 INFO L401 ceAbstractionStarter]: For program point L38(line 38) no Hoare annotation was computed. [2018-01-21 08:40:42,070 INFO L401 ceAbstractionStarter]: For program point L37(line 37) no Hoare annotation was computed. [2018-01-21 08:40:42,071 INFO L401 ceAbstractionStarter]: For program point L34'(line 34) no Hoare annotation was computed. [2018-01-21 08:40:42,071 INFO L401 ceAbstractionStarter]: For program point L32'(line 32) no Hoare annotation was computed. [2018-01-21 08:40:42,074 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:40:42,075 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:40:42,075 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:40:42,075 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:40:42,075 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:40:42,075 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:40:42,075 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:40:42,075 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 08:40:42,076 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:40:42,078 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2018-01-21 08:40:42,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 08:40:42,078 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:40:42,079 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 08:40:42,079 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 08:40:42,079 INFO L82 PathProgramCache]: Analyzing trace with hash 136143, now seen corresponding path program 1 times [2018-01-21 08:40:42,079 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:40:42,081 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:40:42,081 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:40:42,081 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:40:42,081 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:40:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:40:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:40:42,112 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 08:40:42,117 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:40:42,122 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:40:42,122 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:40:42,122 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:40:42,122 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:40:42,122 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:40:42,122 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:40:42,122 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:40:42,122 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == fooErr0EnsuresViolation======== [2018-01-21 08:40:42,122 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:40:42,124 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2018-01-21 08:40:42,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-21 08:40:42,125 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:40:42,125 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:40:42,125 INFO L371 AbstractCegarLoop]: === Iteration 1 === [fooErr0EnsuresViolation]=== [2018-01-21 08:40:42,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1220349549, now seen corresponding path program 1 times [2018-01-21 08:40:42,126 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:40:42,126 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:40:42,126 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:40:42,127 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:40:42,127 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:40:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:40:42,142 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:40:42,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:40:42,165 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:40:42,166 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 08:40:42,166 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:40:42,166 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 08:40:42,166 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 08:40:42,166 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:40:42,167 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2018-01-21 08:40:42,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:40:42,173 INFO L93 Difference]: Finished difference Result 114 states and 135 transitions. [2018-01-21 08:40:42,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 08:40:42,174 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-01-21 08:40:42,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:40:42,176 INFO L225 Difference]: With dead ends: 114 [2018-01-21 08:40:42,176 INFO L226 Difference]: Without dead ends: 43 [2018-01-21 08:40:42,177 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:40:42,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-01-21 08:40:42,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-01-21 08:40:42,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-01-21 08:40:42,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2018-01-21 08:40:42,191 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 26 [2018-01-21 08:40:42,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:40:42,191 INFO L432 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2018-01-21 08:40:42,191 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 08:40:42,191 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2018-01-21 08:40:42,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-21 08:40:42,193 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:40:42,193 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:40:42,193 INFO L371 AbstractCegarLoop]: === Iteration 2 === [fooErr0EnsuresViolation]=== [2018-01-21 08:40:42,193 INFO L82 PathProgramCache]: Analyzing trace with hash 390316661, now seen corresponding path program 1 times [2018-01-21 08:40:42,194 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:40:42,195 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:40:42,195 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:40:42,195 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:40:42,195 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:40:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:40:42,223 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:40:42,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:40:42,346 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:40:42,347 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-21 08:40:42,347 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:40:42,349 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-21 08:40:42,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-21 08:40:42,349 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-21 08:40:42,350 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 7 states. [2018-01-21 08:40:42,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:40:42,536 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2018-01-21 08:40:42,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-21 08:40:42,537 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2018-01-21 08:40:42,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:40:42,541 INFO L225 Difference]: With dead ends: 112 [2018-01-21 08:40:42,541 INFO L226 Difference]: Without dead ends: 77 [2018-01-21 08:40:42,542 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-01-21 08:40:42,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-01-21 08:40:42,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 69. [2018-01-21 08:40:42,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-01-21 08:40:42,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2018-01-21 08:40:42,561 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 28 [2018-01-21 08:40:42,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:40:42,561 INFO L432 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2018-01-21 08:40:42,561 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-21 08:40:42,562 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2018-01-21 08:40:42,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-21 08:40:42,564 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:40:42,564 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:40:42,564 INFO L371 AbstractCegarLoop]: === Iteration 3 === [fooErr0EnsuresViolation]=== [2018-01-21 08:40:42,564 INFO L82 PathProgramCache]: Analyzing trace with hash 2078164222, now seen corresponding path program 1 times [2018-01-21 08:40:42,564 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:40:42,565 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:40:42,566 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:40:42,566 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:40:42,566 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:40:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:40:42,587 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:40:42,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 08:40:42,653 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:40:42,653 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 08:40:42,653 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:40:42,654 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 08:40:42,654 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 08:40:42,654 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 08:40:42,655 INFO L87 Difference]: Start difference. First operand 69 states and 77 transitions. Second operand 4 states. [2018-01-21 08:40:42,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:40:42,806 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2018-01-21 08:40:42,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 08:40:42,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-01-21 08:40:42,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:40:42,808 INFO L225 Difference]: With dead ends: 69 [2018-01-21 08:40:42,808 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 08:40:42,809 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-21 08:40:42,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 08:40:42,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 08:40:42,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 08:40:42,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 08:40:42,810 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2018-01-21 08:40:42,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:40:42,810 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 08:40:42,810 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 08:40:42,810 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 08:40:42,810 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 08:40:42,812 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:40:42,813 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:40:42,813 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:40:42,813 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:40:42,813 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:40:42,813 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:40:42,813 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:40:42,813 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 08:40:42,813 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:40:42,815 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2018-01-21 08:40:42,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-21 08:40:42,816 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:40:42,816 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:40:42,817 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:40:42,817 INFO L82 PathProgramCache]: Analyzing trace with hash -851979775, now seen corresponding path program 1 times [2018-01-21 08:40:42,817 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:40:42,818 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:40:42,818 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:40:42,818 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:40:42,818 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:40:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:40:42,824 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:40:42,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:40:42,831 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:40:42,832 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 08:40:42,832 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:40:42,832 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 08:40:42,832 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 08:40:42,832 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:40:42,833 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2018-01-21 08:40:42,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:40:42,838 INFO L93 Difference]: Finished difference Result 114 states and 135 transitions. [2018-01-21 08:40:42,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 08:40:42,839 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-01-21 08:40:42,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:40:42,840 INFO L225 Difference]: With dead ends: 114 [2018-01-21 08:40:42,840 INFO L226 Difference]: Without dead ends: 57 [2018-01-21 08:40:42,841 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:40:42,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-01-21 08:40:42,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-01-21 08:40:42,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-01-21 08:40:42,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2018-01-21 08:40:42,847 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 17 [2018-01-21 08:40:42,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:40:42,847 INFO L432 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2018-01-21 08:40:42,847 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 08:40:42,847 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2018-01-21 08:40:42,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-21 08:40:42,848 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:40:42,848 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:40:42,849 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:40:42,849 INFO L82 PathProgramCache]: Analyzing trace with hash -178858898, now seen corresponding path program 1 times [2018-01-21 08:40:42,849 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:40:42,850 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:40:42,850 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:40:42,850 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:40:42,850 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:40:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:40:42,856 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:40:42,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:40:42,875 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:40:42,875 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 08:40:42,875 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:40:42,875 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 08:40:42,875 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 08:40:42,876 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:40:42,876 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 3 states. [2018-01-21 08:40:42,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:40:42,894 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2018-01-21 08:40:42,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 08:40:42,894 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-01-21 08:40:42,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:40:42,895 INFO L225 Difference]: With dead ends: 76 [2018-01-21 08:40:42,895 INFO L226 Difference]: Without dead ends: 61 [2018-01-21 08:40:42,896 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:40:42,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-01-21 08:40:42,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2018-01-21 08:40:42,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-01-21 08:40:42,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2018-01-21 08:40:42,900 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 19 [2018-01-21 08:40:42,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:40:42,901 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2018-01-21 08:40:42,901 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 08:40:42,901 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2018-01-21 08:40:42,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-01-21 08:40:42,902 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:40:42,902 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:40:42,902 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:40:42,902 INFO L82 PathProgramCache]: Analyzing trace with hash -853032378, now seen corresponding path program 1 times [2018-01-21 08:40:42,902 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:40:42,903 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:40:42,903 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:40:42,903 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:40:42,903 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:40:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:40:42,920 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:40:42,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:40:42,960 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:40:42,960 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 08:40:42,962 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 47 with the following transitions: [2018-01-21 08:40:42,964 INFO L201 CegarAbsIntRunner]: [0], [4], [7], [17], [18], [20], [21], [23], [24], [25], [29], [32], [44], [50], [51], [52], [53], [58], [59], [60], [61], [65], [68], [70], [72], [73], [74], [76], [80], [84], [89], [90], [93], [95], [96], [97], [106], [108], [109], [110], [111], [112], [113], [114], [115] [2018-01-21 08:40:43,016 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 08:40:43,016 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 08:40:46,461 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-21 08:40:46,462 INFO L268 AbstractInterpreter]: Visited 45 different actions 81 times. Merged at 17 different actions 17 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 23 variables. [2018-01-21 08:40:46,495 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-21 08:40:46,495 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:40:46,495 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 [2018-01-21 08:40:46,509 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:40:46,510 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 08:40:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:40:46,550 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 08:40:46,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:40:46,677 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 08:40:47,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:40:47,205 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-01-21 08:40:47,205 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [4] total 11 [2018-01-21 08:40:47,205 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:40:47,206 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-21 08:40:47,206 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-21 08:40:47,207 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-01-21 08:40:47,207 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 7 states. [2018-01-21 08:40:47,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:40:47,389 INFO L93 Difference]: Finished difference Result 118 states and 128 transitions. [2018-01-21 08:40:47,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-21 08:40:47,390 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2018-01-21 08:40:47,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:40:47,391 INFO L225 Difference]: With dead ends: 118 [2018-01-21 08:40:47,392 INFO L226 Difference]: Without dead ends: 61 [2018-01-21 08:40:47,392 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 81 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-01-21 08:40:47,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-01-21 08:40:47,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2018-01-21 08:40:47,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-01-21 08:40:47,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2018-01-21 08:40:47,398 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 46 [2018-01-21 08:40:47,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:40:47,398 INFO L432 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2018-01-21 08:40:47,399 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-21 08:40:47,399 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2018-01-21 08:40:47,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-01-21 08:40:47,400 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:40:47,401 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:40:47,401 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:40:47,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1793846129, now seen corresponding path program 1 times [2018-01-21 08:40:47,401 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:40:47,402 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:40:47,402 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:40:47,402 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:40:47,403 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:40:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:40:47,419 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:40:47,465 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 08:40:47,465 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:40:47,465 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 08:40:47,465 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 52 with the following transitions: [2018-01-21 08:40:47,466 INFO L201 CegarAbsIntRunner]: [0], [4], [7], [9], [10], [11], [13], [17], [18], [20], [21], [23], [24], [25], [29], [32], [44], [50], [51], [52], [53], [58], [59], [60], [61], [65], [68], [70], [72], [73], [74], [76], [80], [84], [89], [90], [93], [95], [96], [97], [106], [108], [109], [110], [111], [112], [113], [114], [115] [2018-01-21 08:40:47,468 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 08:40:47,468 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 08:40:50,626 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-21 08:40:50,626 INFO L268 AbstractInterpreter]: Visited 49 different actions 111 times. Merged at 27 different actions 37 times. Never widened. Found 6 fixpoints after 4 different actions. Largest state had 23 variables. [2018-01-21 08:40:50,629 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-21 08:40:50,629 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:40:50,629 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 [2018-01-21 08:40:50,635 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:40:50,635 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 08:40:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:40:50,666 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 08:40:50,736 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 08:40:50,736 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 08:40:50,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 08:40:50,823 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:40:50,824 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 4 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 4 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-21 08:40:50,882 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:40:50,883 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 08:40:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:40:50,928 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 08:40:50,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 08:40:50,935 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 08:40:50,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 08:40:50,967 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-21 08:40:50,967 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4] total 7 [2018-01-21 08:40:50,968 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-21 08:40:50,968 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 08:40:50,968 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 08:40:50,968 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-21 08:40:50,968 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 5 states. [2018-01-21 08:40:50,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:40:50,999 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2018-01-21 08:40:51,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 08:40:51,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2018-01-21 08:40:51,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:40:51,001 INFO L225 Difference]: With dead ends: 82 [2018-01-21 08:40:51,001 INFO L226 Difference]: Without dead ends: 70 [2018-01-21 08:40:51,001 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-21 08:40:51,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-01-21 08:40:51,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2018-01-21 08:40:51,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-01-21 08:40:51,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2018-01-21 08:40:51,006 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 51 [2018-01-21 08:40:51,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:40:51,007 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2018-01-21 08:40:51,007 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 08:40:51,007 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2018-01-21 08:40:51,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-01-21 08:40:51,009 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:40:51,009 INFO L322 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-01-21 08:40:51,009 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:40:51,010 INFO L82 PathProgramCache]: Analyzing trace with hash 988850019, now seen corresponding path program 2 times [2018-01-21 08:40:51,010 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:40:51,011 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:40:51,011 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:40:51,011 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:40:51,011 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:40:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:40:51,033 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:40:51,122 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-01-21 08:40:51,122 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:40:51,122 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 08:40:51,123 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-01-21 08:40:51,123 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 08:40:51,123 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:40:51,123 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-21 08:40:51,140 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-21 08:40:51,140 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-01-21 08:40:51,157 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-21 08:40:51,177 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-21 08:40:51,185 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-21 08:40:51,190 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 08:40:51,280 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-01-21 08:40:51,280 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 08:40:51,452 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-01-21 08:40:51,472 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-01-21 08:40:51,473 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [5] total 12 [2018-01-21 08:40:51,473 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:40:51,473 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-21 08:40:51,473 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-21 08:40:51,473 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-01-21 08:40:51,474 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 7 states. [2018-01-21 08:40:51,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:40:51,556 INFO L93 Difference]: Finished difference Result 128 states and 141 transitions. [2018-01-21 08:40:51,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-21 08:40:51,556 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 81 [2018-01-21 08:40:51,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:40:51,558 INFO L225 Difference]: With dead ends: 128 [2018-01-21 08:40:51,558 INFO L226 Difference]: Without dead ends: 80 [2018-01-21 08:40:51,558 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 153 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-01-21 08:40:51,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-01-21 08:40:51,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2018-01-21 08:40:51,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-01-21 08:40:51,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2018-01-21 08:40:51,567 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 81 [2018-01-21 08:40:51,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:40:51,568 INFO L432 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2018-01-21 08:40:51,568 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-21 08:40:51,568 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2018-01-21 08:40:51,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-01-21 08:40:51,570 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:40:51,570 INFO L322 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2018-01-21 08:40:51,570 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:40:51,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1383712123, now seen corresponding path program 1 times [2018-01-21 08:40:51,570 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:40:51,571 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:40:51,571 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-21 08:40:51,571 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:40:51,571 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:40:51,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:40:51,593 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:40:51,676 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-01-21 08:40:51,676 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:40:51,676 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 08:40:51,676 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 88 with the following transitions: [2018-01-21 08:40:51,677 INFO L201 CegarAbsIntRunner]: [0], [4], [7], [9], [10], [11], [13], [17], [18], [20], [21], [23], [24], [25], [29], [32], [34], [35], [36], [37], [39], [44], [50], [51], [52], [53], [58], [59], [60], [61], [65], [68], [70], [72], [73], [74], [76], [80], [84], [89], [90], [93], [95], [96], [97], [106], [108], [109], [110], [111], [112], [113], [114], [115] [2018-01-21 08:40:51,679 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 08:40:51,679 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 08:41:18,470 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-21 08:41:18,470 INFO L268 AbstractInterpreter]: Visited 54 different actions 247 times. Merged at 38 different actions 115 times. Never widened. Found 20 fixpoints after 6 different actions. Largest state had 25 variables. [2018-01-21 08:41:18,472 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-21 08:41:18,472 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:41:18,472 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 [2018-01-21 08:41:18,477 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:41:18,477 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 08:41:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:41:18,502 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 08:41:18,573 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-01-21 08:41:18,573 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 08:41:18,765 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-01-21 08:41:18,786 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:41:18,786 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 [2018-01-21 08:41:18,789 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:41:18,789 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 08:41:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:41:18,840 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 08:41:18,858 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-01-21 08:41:18,858 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 08:41:18,920 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-01-21 08:41:18,922 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-21 08:41:18,922 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9, 5, 5] total 19 [2018-01-21 08:41:18,922 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-21 08:41:18,922 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-21 08:41:18,923 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-21 08:41:18,923 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2018-01-21 08:41:18,923 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand 12 states. [2018-01-21 08:41:19,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:41:19,115 INFO L93 Difference]: Finished difference Result 187 states and 215 transitions. [2018-01-21 08:41:19,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-21 08:41:19,115 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 87 [2018-01-21 08:41:19,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:41:19,116 INFO L225 Difference]: With dead ends: 187 [2018-01-21 08:41:19,116 INFO L226 Difference]: Without dead ends: 119 [2018-01-21 08:41:19,117 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 329 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2018-01-21 08:41:19,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-01-21 08:41:19,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 100. [2018-01-21 08:41:19,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-01-21 08:41:19,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2018-01-21 08:41:19,128 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 87 [2018-01-21 08:41:19,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:41:19,128 INFO L432 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2018-01-21 08:41:19,128 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-21 08:41:19,129 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2018-01-21 08:41:19,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-01-21 08:41:19,130 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:41:19,130 INFO L322 BasicCegarLoop]: trace histogram [8, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:41:19,130 INFO L371 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:41:19,130 INFO L82 PathProgramCache]: Analyzing trace with hash -762611473, now seen corresponding path program 2 times [2018-01-21 08:41:19,131 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:41:19,131 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:41:19,131 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:41:19,131 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:41:19,131 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:41:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:41:19,161 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:41:19,256 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2018-01-21 08:41:19,256 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:41:19,256 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 08:41:19,256 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-01-21 08:41:19,256 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 08:41:19,257 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:41:19,257 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 [2018-01-21 08:41:19,264 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-21 08:41:19,264 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-01-21 08:41:19,281 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-21 08:41:19,303 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-21 08:41:19,309 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-21 08:41:19,315 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 08:41:19,404 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-01-21 08:41:19,404 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 08:41:19,530 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-01-21 08:41:19,552 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:41:19,552 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 [2018-01-21 08:41:19,555 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-21 08:41:19,556 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-01-21 08:41:19,572 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-21 08:41:19,604 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-21 08:41:19,631 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-21 08:41:19,638 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 08:41:19,659 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2018-01-21 08:41:19,659 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 08:41:19,746 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2018-01-21 08:41:19,749 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-21 08:41:19,749 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9, 6, 6] total 21 [2018-01-21 08:41:19,749 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-21 08:41:19,750 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-21 08:41:19,750 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-21 08:41:19,750 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2018-01-21 08:41:19,750 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand 13 states. [2018-01-21 08:41:19,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:41:19,929 INFO L93 Difference]: Finished difference Result 265 states and 302 transitions. [2018-01-21 08:41:19,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-21 08:41:19,930 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 133 [2018-01-21 08:41:19,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:41:19,931 INFO L225 Difference]: With dead ends: 265 [2018-01-21 08:41:19,932 INFO L226 Difference]: Without dead ends: 191 [2018-01-21 08:41:19,932 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 515 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=550, Unknown=0, NotChecked=0, Total=702 [2018-01-21 08:41:19,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-01-21 08:41:19,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 133. [2018-01-21 08:41:19,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-01-21 08:41:19,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 147 transitions. [2018-01-21 08:41:19,948 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 147 transitions. Word has length 133 [2018-01-21 08:41:19,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:41:19,949 INFO L432 AbstractCegarLoop]: Abstraction has 133 states and 147 transitions. [2018-01-21 08:41:19,949 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-21 08:41:19,949 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 147 transitions. [2018-01-21 08:41:19,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-01-21 08:41:19,951 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:41:19,952 INFO L322 BasicCegarLoop]: trace histogram [11, 9, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:41:19,952 INFO L371 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:41:19,952 INFO L82 PathProgramCache]: Analyzing trace with hash 177172698, now seen corresponding path program 3 times [2018-01-21 08:41:19,952 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:41:19,953 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:41:19,954 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-21 08:41:19,954 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:41:19,954 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:41:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:41:19,991 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:41:20,117 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2018-01-21 08:41:20,117 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:41:20,117 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 08:41:20,118 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-01-21 08:41:20,118 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 08:41:20,118 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:41:20,118 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 [2018-01-21 08:41:20,126 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-21 08:41:20,126 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-01-21 08:41:20,142 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-21 08:41:20,148 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-21 08:41:20,178 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-21 08:41:20,189 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-21 08:41:20,191 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-21 08:41:20,195 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 08:41:20,258 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 107 proven. 10 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2018-01-21 08:41:20,258 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 08:41:20,420 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 107 proven. 10 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2018-01-21 08:41:20,442 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:41:20,442 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 11 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 11 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-21 08:41:20,445 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-21 08:41:20,445 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-01-21 08:41:20,465 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-21 08:41:20,477 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-21 08:41:20,506 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-21 08:41:20,565 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-21 08:41:20,589 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-21 08:41:20,596 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 08:41:20,689 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 194 proven. 9 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-01-21 08:41:20,689 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 08:41:21,006 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 194 proven. 9 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-01-21 08:41:21,008 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-21 08:41:21,008 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9, 10, 10] total 28 [2018-01-21 08:41:21,008 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-21 08:41:21,009 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-21 08:41:21,009 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-21 08:41:21,010 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2018-01-21 08:41:21,010 INFO L87 Difference]: Start difference. First operand 133 states and 147 transitions. Second operand 12 states. [2018-01-21 08:41:21,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:41:21,216 INFO L93 Difference]: Finished difference Result 297 states and 345 transitions. [2018-01-21 08:41:21,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-21 08:41:21,216 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 186 [2018-01-21 08:41:21,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:41:21,218 INFO L225 Difference]: With dead ends: 297 [2018-01-21 08:41:21,218 INFO L226 Difference]: Without dead ends: 285 [2018-01-21 08:41:21,219 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 757 GetRequests, 723 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=186, Invalid=806, Unknown=0, NotChecked=0, Total=992 [2018-01-21 08:41:21,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-01-21 08:41:21,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 187. [2018-01-21 08:41:21,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-01-21 08:41:21,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 211 transitions. [2018-01-21 08:41:21,235 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 211 transitions. Word has length 186 [2018-01-21 08:41:21,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:41:21,235 INFO L432 AbstractCegarLoop]: Abstraction has 187 states and 211 transitions. [2018-01-21 08:41:21,236 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-21 08:41:21,236 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 211 transitions. [2018-01-21 08:41:21,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-01-21 08:41:21,240 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:41:21,240 INFO L322 BasicCegarLoop]: trace histogram [14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:41:21,240 INFO L371 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:41:21,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1635919095, now seen corresponding path program 4 times [2018-01-21 08:41:21,241 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:41:21,242 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:41:21,242 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-21 08:41:21,242 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:41:21,242 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:41:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:41:21,284 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:41:21,448 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2018-01-21 08:41:21,448 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:41:21,448 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 08:41:21,448 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-01-21 08:41:21,448 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 08:41:21,448 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:41:21,449 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-21 08:41:21,454 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-21 08:41:21,454 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-01-21 08:41:21,516 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-21 08:41:21,521 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 08:41:21,660 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 567 proven. 9 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2018-01-21 08:41:21,661 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 08:41:21,951 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 159 proven. 189 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2018-01-21 08:41:21,972 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:41:21,977 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 13 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 13 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-21 08:41:21,980 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-21 08:41:21,980 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-01-21 08:41:22,094 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-21 08:41:22,104 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 08:41:22,135 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 567 proven. 9 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2018-01-21 08:41:22,135 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 08:41:22,369 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 159 proven. 189 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2018-01-21 08:41:22,371 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-21 08:41:22,371 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11, 11, 11] total 21 [2018-01-21 08:41:22,371 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-21 08:41:22,372 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-21 08:41:22,372 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-21 08:41:22,372 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2018-01-21 08:41:22,372 INFO L87 Difference]: Start difference. First operand 187 states and 211 transitions. Second operand 17 states. [2018-01-21 08:41:22,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:41:22,598 INFO L93 Difference]: Finished difference Result 393 states and 464 transitions. [2018-01-21 08:41:22,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-21 08:41:22,598 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 245 [2018-01-21 08:41:22,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:41:22,600 INFO L225 Difference]: With dead ends: 393 [2018-01-21 08:41:22,600 INFO L226 Difference]: Without dead ends: 251 [2018-01-21 08:41:22,601 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 995 GetRequests, 954 SyntacticMatches, 14 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2018-01-21 08:41:22,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-01-21 08:41:22,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 202. [2018-01-21 08:41:22,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-01-21 08:41:22,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 228 transitions. [2018-01-21 08:41:22,615 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 228 transitions. Word has length 245 [2018-01-21 08:41:22,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:41:22,615 INFO L432 AbstractCegarLoop]: Abstraction has 202 states and 228 transitions. [2018-01-21 08:41:22,615 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-21 08:41:22,615 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 228 transitions. [2018-01-21 08:41:22,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-01-21 08:41:22,618 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:41:22,619 INFO L322 BasicCegarLoop]: trace histogram [21, 17, 15, 15, 15, 15, 11, 11, 11, 11, 11, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:41:22,619 INFO L371 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:41:22,619 INFO L82 PathProgramCache]: Analyzing trace with hash -650410822, now seen corresponding path program 5 times [2018-01-21 08:41:22,619 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:41:22,620 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:41:22,620 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-21 08:41:22,620 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:41:22,620 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:41:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:41:22,654 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:41:22,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 1437 trivial. 0 not checked. [2018-01-21 08:41:22,945 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:41:22,945 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 08:41:22,945 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-01-21 08:41:22,945 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 08:41:22,945 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:41:22,945 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-21 08:41:22,952 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-21 08:41:22,952 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-01-21 08:41:22,978 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-21 08:41:22,991 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-21 08:41:23,003 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-21 08:41:23,018 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-21 08:41:23,192 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-21 08:41:23,195 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-21 08:41:23,204 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 08:41:23,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 912 proven. 70 refuted. 0 times theorem prover too weak. 572 trivial. 0 not checked. [2018-01-21 08:41:23,428 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 08:41:23,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 168 proven. 256 refuted. 0 times theorem prover too weak. 1130 trivial. 0 not checked. [2018-01-21 08:41:23,723 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:41:23,724 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 15 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 15 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-21 08:41:23,726 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-21 08:41:23,727 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-01-21 08:41:23,756 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-21 08:41:23,773 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-21 08:41:23,818 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-21 08:41:28,981 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command Received shutdown request... [2018-01-21 08:41:41,044 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-21 08:41:41,144 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-21 08:41:41,157 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 08:41:41,160 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-21 08:41:41,160 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 08:41:41,163 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:41:41,163 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:41:41,163 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:41:41,163 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:41:41,163 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:41:41,163 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:41:41,163 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:41:41,164 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 08:41:41,164 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:41:41,165 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2018-01-21 08:41:41,165 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 08:41:41,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 08:41:41 BoogieIcfgContainer [2018-01-21 08:41:41,166 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 08:41:41,167 INFO L168 Benchmark]: Toolchain (without parser) took 60023.40 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 268.6 MB in the beginning and 867.0 MB in the end (delta: -598.3 MB). Peak memory consumption was 641.6 MB. Max. memory is 5.3 GB. [2018-01-21 08:41:41,168 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 309.3 MB. Free memory is still 273.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 08:41:41,168 INFO L168 Benchmark]: CACSL2BoogieTranslator took 190.29 ms. Allocated memory is still 309.3 MB. Free memory was 268.6 MB in the beginning and 259.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. [2018-01-21 08:41:41,168 INFO L168 Benchmark]: Boogie Preprocessor took 32.69 ms. Allocated memory is still 309.3 MB. Free memory was 259.5 MB in the beginning and 257.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 08:41:41,169 INFO L168 Benchmark]: RCFGBuilder took 268.02 ms. Allocated memory is still 309.3 MB. Free memory was 257.6 MB in the beginning and 239.9 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 5.3 GB. [2018-01-21 08:41:41,169 INFO L168 Benchmark]: TraceAbstraction took 59526.79 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 239.9 MB in the beginning and 867.0 MB in the end (delta: -627.1 MB). Peak memory consumption was 612.8 MB. Max. memory is 5.3 GB. [2018-01-21 08:41:41,171 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 309.3 MB. Free memory is still 273.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 190.29 ms. Allocated memory is still 309.3 MB. Free memory was 268.6 MB in the beginning and 259.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 32.69 ms. Allocated memory is still 309.3 MB. Free memory was 259.5 MB in the beginning and 257.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 268.02 ms. Allocated memory is still 309.3 MB. Free memory was 257.6 MB in the beginning and 239.9 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 59526.79 ms. Allocated memory was 309.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 239.9 MB in the beginning and 867.0 MB in the end (delta: -627.1 MB). Peak memory consumption was 612.8 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 44 LocStat_MAX_WEQGRAPH_SIZE : 2 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 412 LocStat_NO_SUPPORTING_DISEQUALITIES : 98 LocStat_NO_DISJUNCTIONS : -88 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 53 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 66 TransStat_NO_SUPPORTING_DISEQUALITIES : 8 TransStat_NO_DISJUNCTIONS : 53 TransStat_MAX_NO_DISJUNCTIONS : 1 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.385078 RENAME_VARIABLES(MILLISECONDS) : 0.240890 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.334463 PROJECTAWAY(MILLISECONDS) : 0.176274 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.064213 DISJOIN(MILLISECONDS) : 0.198788 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.271175 ADD_EQUALITY(MILLISECONDS) : 0.040608 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.008919 #CONJOIN_DISJUNCTIVE : 98 #RENAME_VARIABLES : 195 #UNFREEZE : 0 #CONJOIN : 159 #PROJECTAWAY : 167 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 18 #RENAME_VARIABLES_DISJUNCTIVE : 195 #ADD_EQUALITY : 67 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 4 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 47 LocStat_MAX_WEQGRAPH_SIZE : 2 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 431 LocStat_NO_SUPPORTING_DISEQUALITIES : 108 LocStat_NO_DISJUNCTIONS : -94 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 57 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 69 TransStat_NO_SUPPORTING_DISEQUALITIES : 8 TransStat_NO_DISJUNCTIONS : 57 TransStat_MAX_NO_DISJUNCTIONS : 1 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.235017 RENAME_VARIABLES(MILLISECONDS) : 0.134711 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.205571 PROJECTAWAY(MILLISECONDS) : 0.090960 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.044850 DISJOIN(MILLISECONDS) : 0.120398 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.149718 ADD_EQUALITY(MILLISECONDS) : 0.019915 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.006828 #CONJOIN_DISJUNCTIVE : 128 #RENAME_VARIABLES : 261 #UNFREEZE : 0 #CONJOIN : 197 #PROJECTAWAY : 209 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 21 #RENAME_VARIABLES_DISJUNCTIVE : 261 #ADD_EQUALITY : 70 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 4 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 51 LocStat_MAX_WEQGRAPH_SIZE : 3 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 483 LocStat_NO_SUPPORTING_DISEQUALITIES : 123 LocStat_NO_DISJUNCTIONS : -102 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 62 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 72 TransStat_NO_SUPPORTING_DISEQUALITIES : 8 TransStat_NO_DISJUNCTIONS : 62 TransStat_MAX_NO_DISJUNCTIONS : 1 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.270628 RENAME_VARIABLES(MILLISECONDS) : 0.188574 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.243660 PROJECTAWAY(MILLISECONDS) : 0.153981 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.029461 DISJOIN(MILLISECONDS) : 0.116260 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.214137 ADD_EQUALITY(MILLISECONDS) : 0.025054 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.012044 #CONJOIN_DISJUNCTIVE : 326 #RENAME_VARIABLES : 753 #UNFREEZE : 0 #CONJOIN : 513 #PROJECTAWAY : 505 #ADD_WEAK_EQUALITY : 11 #DISJOIN : 81 #RENAME_VARIABLES_DISJUNCTIVE : 753 #ADD_EQUALITY : 74 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 4 * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: barErr0EnsuresViolation CFG has 5 procedures, 62 locations, 5 error locations. SAFE Result, 0.3s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 66 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 17 PreInvPairs, 21 NumberOfFragments, 12 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 361 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 5 procedures, 62 locations, 5 error locations. UNSAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 20]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: fooErr0EnsuresViolation CFG has 5 procedures, 62 locations, 5 error locations. SAFE Result, 0.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 138 SDtfs, 60 SDslu, 196 SDs, 0 SdLazy, 114 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 5846 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 1). Cancelled while BasicCegarLoop was analyzing trace of length 313 with TraceHistMax 21, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 2 quantified variables from 3 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 5 procedures, 62 locations, 5 error locations. TIMEOUT Result, 58.3s OverallTime, 10 OverallIterations, 21 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 449 SDtfs, 617 SDslu, 1906 SDs, 0 SdLazy, 1194 SolverSat, 119 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3129 GetRequests, 2960 SyntacticMatches, 38 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 920 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=202occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 33.4s AbstIntTime, 3 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 241 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 2396 NumberOfCodeBlocks, 2246 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 3894 ConstructedInterpolants, 0 QuantifiedInterpolants, 1073570 SizeOfPredicates, 35 NumberOfNonLiveVariables, 3543 ConjunctsInSsa, 85 ConjunctsInUnsatCore, 33 InterpolantComputations, 6 PerfectInterpolantSequences, 6843/7552 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 31]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 31). Cancelled while IsEmpty was searching accepting run (input had 62 states). - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 5 procedures, 62 locations, 5 error locations. TIMEOUT Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength2_false-valid-deref-read.c_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_08-41-41-184.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength2_false-valid-deref-read.c_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-VPDomainBenchmark-0-2018-01-21_08-41-41-184.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength2_false-valid-deref-read.c_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-0-2018-01-21_08-41-41-184.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength2_false-valid-deref-read.c_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-VPDomainBenchmark-1-2018-01-21_08-41-41-184.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength2_false-valid-deref-read.c_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-1-2018-01-21_08-41-41-184.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength2_false-valid-deref-read.c_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-VPDomainBenchmark-2-2018-01-21_08-41-41-184.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength2_false-valid-deref-read.c_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-2-2018-01-21_08-41-41-184.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength2_false-valid-deref-read.c_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_08-41-41-184.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength2_false-valid-deref-read.c_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_08-41-41-184.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength2_false-valid-deref-read.c_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_08-41-41-184.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength2_false-valid-deref-read.c_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_08-41-41-184.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength2_false-valid-deref-read.c_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-4-2018-01-21_08-41-41-184.csv Completed graceful shutdown