java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf -i ../../../trunk/examples/svcomp/array-memsafety/openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 15:17:05,194 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 15:17:05,195 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 15:17:05,210 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 15:17:05,210 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 15:17:05,211 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 15:17:05,212 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 15:17:05,213 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 15:17:05,215 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 15:17:05,216 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 15:17:05,217 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 15:17:05,217 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 15:17:05,218 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 15:17:05,219 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 15:17:05,220 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 15:17:05,223 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 15:17:05,225 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 15:17:05,227 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 15:17:05,228 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 15:17:05,229 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 15:17:05,231 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 15:17:05,236 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 15:17:05,237 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 15:17:05,237 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf [2018-01-24 15:17:05,246 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 15:17:05,246 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 15:17:05,247 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 15:17:05,247 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 15:17:05,247 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 15:17:05,247 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 15:17:05,247 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 15:17:05,248 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 15:17:05,248 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 15:17:05,248 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 15:17:05,248 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 15:17:05,248 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 15:17:05,248 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 15:17:05,249 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 15:17:05,249 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 15:17:05,249 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 15:17:05,249 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 15:17:05,249 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 15:17:05,249 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 15:17:05,249 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 15:17:05,249 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 15:17:05,250 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 15:17:05,250 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 15:17:05,250 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 15:17:05,250 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 15:17:05,250 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 15:17:05,251 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 15:17:05,251 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 15:17:05,251 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 15:17:05,251 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 15:17:05,251 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 15:17:05,251 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 15:17:05,251 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 15:17:05,252 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 15:17:05,252 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 15:17:05,284 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 15:17:05,295 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 15:17:05,298 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 15:17:05,299 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 15:17:05,300 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 15:17:05,300 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i [2018-01-24 15:17:05,452 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 15:17:05,456 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 15:17:05,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 15:17:05,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 15:17:05,462 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 15:17:05,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 03:17:05" (1/1) ... [2018-01-24 15:17:05,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6193682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:17:05, skipping insertion in model container [2018-01-24 15:17:05,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 03:17:05" (1/1) ... [2018-01-24 15:17:05,478 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 15:17:05,518 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 15:17:05,632 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 15:17:05,647 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 15:17:05,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:17:05 WrapperNode [2018-01-24 15:17:05,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 15:17:05,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 15:17:05,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 15:17:05,654 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 15:17:05,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:17:05" (1/1) ... [2018-01-24 15:17:05,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:17:05" (1/1) ... [2018-01-24 15:17:05,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:17:05" (1/1) ... [2018-01-24 15:17:05,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:17:05" (1/1) ... [2018-01-24 15:17:05,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:17:05" (1/1) ... [2018-01-24 15:17:05,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:17:05" (1/1) ... [2018-01-24 15:17:05,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:17:05" (1/1) ... [2018-01-24 15:17:05,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 15:17:05,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 15:17:05,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 15:17:05,689 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 15:17:05,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:17:05" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 15:17:05,734 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 15:17:05,734 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 15:17:05,734 INFO L136 BoogieDeclarations]: Found implementation of procedure cmemchr [2018-01-24 15:17:05,734 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 15:17:05,734 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 15:17:05,734 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 15:17:05,734 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 15:17:05,734 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 15:17:05,735 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 15:17:05,735 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 15:17:05,735 INFO L128 BoogieDeclarations]: Found specification of procedure cmemchr [2018-01-24 15:17:05,735 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 15:17:05,735 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 15:17:05,735 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 15:17:05,878 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 15:17:05,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 03:17:05 BoogieIcfgContainer [2018-01-24 15:17:05,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 15:17:05,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 15:17:05,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 15:17:05,882 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 15:17:05,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 03:17:05" (1/3) ... [2018-01-24 15:17:05,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6822777c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 03:17:05, skipping insertion in model container [2018-01-24 15:17:05,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:17:05" (2/3) ... [2018-01-24 15:17:05,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6822777c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 03:17:05, skipping insertion in model container [2018-01-24 15:17:05,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 03:17:05" (3/3) ... [2018-01-24 15:17:05,887 INFO L105 eAbstractionObserver]: Analyzing ICFG openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i [2018-01-24 15:17:05,895 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 15:17:05,903 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-24 15:17:05,951 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 15:17:05,951 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 15:17:05,951 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 15:17:05,951 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 15:17:05,952 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 15:17:05,952 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 15:17:05,952 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 15:17:05,952 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 15:17:05,953 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 15:17:05,974 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-01-24 15:17:05,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-24 15:17:05,981 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:17:05,982 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:17:05,982 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cmemchrErr1RequiresViolation, cmemchrErr0RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 15:17:05,987 INFO L82 PathProgramCache]: Analyzing trace with hash -624451344, now seen corresponding path program 1 times [2018-01-24 15:17:05,990 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:17:06,034 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:17:06,035 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:17:06,035 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:17:06,035 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:17:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:17:06,099 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:17:06,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 15:17:06,262 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:17:06,262 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 15:17:06,262 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:17:06,264 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 15:17:06,274 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 15:17:06,275 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-01-24 15:17:06,276 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 8 states. [2018-01-24 15:17:06,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:17:06,533 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2018-01-24 15:17:06,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 15:17:06,535 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2018-01-24 15:17:06,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:17:06,545 INFO L225 Difference]: With dead ends: 45 [2018-01-24 15:17:06,545 INFO L226 Difference]: Without dead ends: 30 [2018-01-24 15:17:06,547 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-01-24 15:17:06,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-01-24 15:17:06,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2018-01-24 15:17:06,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-01-24 15:17:06,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2018-01-24 15:17:06,575 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 15 [2018-01-24 15:17:06,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:17:06,575 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2018-01-24 15:17:06,575 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 15:17:06,575 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2018-01-24 15:17:06,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-24 15:17:06,576 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:17:06,576 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:17:06,576 INFO L371 AbstractCegarLoop]: === Iteration 2 === [cmemchrErr1RequiresViolation, cmemchrErr0RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 15:17:06,576 INFO L82 PathProgramCache]: Analyzing trace with hash -624451343, now seen corresponding path program 1 times [2018-01-24 15:17:06,576 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:17:06,577 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:17:06,577 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:17:06,577 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:17:06,577 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:17:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:17:06,598 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:17:06,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 15:17:06,839 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:17:06,839 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 15:17:06,839 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:17:06,841 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 15:17:06,841 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 15:17:06,842 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-24 15:17:06,842 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 9 states. [2018-01-24 15:17:06,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:17:06,973 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2018-01-24 15:17:06,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 15:17:06,973 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-01-24 15:17:06,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:17:06,974 INFO L225 Difference]: With dead ends: 31 [2018-01-24 15:17:06,974 INFO L226 Difference]: Without dead ends: 30 [2018-01-24 15:17:06,975 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-01-24 15:17:06,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-01-24 15:17:06,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2018-01-24 15:17:06,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-01-24 15:17:06,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2018-01-24 15:17:06,982 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 15 [2018-01-24 15:17:06,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:17:06,982 INFO L432 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2018-01-24 15:17:06,982 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 15:17:06,983 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2018-01-24 15:17:06,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-24 15:17:06,983 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:17:06,984 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:17:06,984 INFO L371 AbstractCegarLoop]: === Iteration 3 === [cmemchrErr1RequiresViolation, cmemchrErr0RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 15:17:06,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1772059431, now seen corresponding path program 1 times [2018-01-24 15:17:06,984 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:17:06,985 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:17:06,985 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:17:06,986 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:17:06,986 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:17:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:17:07,011 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:17:07,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 15:17:07,170 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:17:07,208 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 15:17:07,209 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:17:07,209 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 15:17:07,209 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 15:17:07,209 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-01-24 15:17:07,210 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 7 states. [2018-01-24 15:17:07,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:17:07,277 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2018-01-24 15:17:07,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 15:17:07,278 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-01-24 15:17:07,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:17:07,279 INFO L225 Difference]: With dead ends: 63 [2018-01-24 15:17:07,280 INFO L226 Difference]: Without dead ends: 49 [2018-01-24 15:17:07,280 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-01-24 15:17:07,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-01-24 15:17:07,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2018-01-24 15:17:07,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-01-24 15:17:07,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2018-01-24 15:17:07,290 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 20 [2018-01-24 15:17:07,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:17:07,290 INFO L432 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2018-01-24 15:17:07,290 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 15:17:07,291 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2018-01-24 15:17:07,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-24 15:17:07,292 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:17:07,292 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:17:07,292 INFO L371 AbstractCegarLoop]: === Iteration 4 === [cmemchrErr1RequiresViolation, cmemchrErr0RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 15:17:07,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1185253417, now seen corresponding path program 1 times [2018-01-24 15:17:07,292 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:17:07,294 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:17:07,294 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:17:07,294 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:17:07,294 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:17:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:17:07,314 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:17:07,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 15:17:07,576 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 15:17:07,576 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 15:17:07,577 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-01-24 15:17:07,579 INFO L201 CegarAbsIntRunner]: [0], [3], [7], [8], [10], [14], [16], [21], [30], [31], [35], [38], [46], [48], [49], [56], [57], [58], [60] [2018-01-24 15:17:07,627 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 15:17:07,627 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 15:17:07,882 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 15:17:07,883 INFO L268 AbstractInterpreter]: Visited 19 different actions 24 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-01-24 15:17:07,895 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-24 15:17:07,895 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 15:17:07,895 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 15:17:07,915 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:17:07,915 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 15:17:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:17:07,960 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 15:17:07,991 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 15:17:07,992 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 15:17:08,002 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 15:17:08,002 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 15:17:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 15:17:08,343 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 15:17:08,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 15:17:08,759 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 15:17:08,759 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 3 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 3 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-24 15:17:08,763 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:17:08,763 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 15:17:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:17:08,810 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 15:17:08,813 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 15:17:08,813 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 15:17:08,817 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 15:17:08,817 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-01-24 15:17:08,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 15:17:08,971 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 15:17:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 15:17:09,226 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-24 15:17:09,226 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11, 12, 12] total 43 [2018-01-24 15:17:09,226 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-24 15:17:09,226 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-24 15:17:09,226 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-24 15:17:09,227 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1716, Unknown=0, NotChecked=0, Total=1892 [2018-01-24 15:17:09,227 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 23 states. [2018-01-24 15:17:09,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:17:09,726 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2018-01-24 15:17:09,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-24 15:17:09,727 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 20 [2018-01-24 15:17:09,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:17:09,733 INFO L225 Difference]: With dead ends: 56 [2018-01-24 15:17:09,733 INFO L226 Difference]: Without dead ends: 55 [2018-01-24 15:17:09,734 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=298, Invalid=2354, Unknown=0, NotChecked=0, Total=2652 [2018-01-24 15:17:09,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-01-24 15:17:09,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2018-01-24 15:17:09,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-01-24 15:17:09,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2018-01-24 15:17:09,742 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 20 [2018-01-24 15:17:09,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:17:09,743 INFO L432 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2018-01-24 15:17:09,743 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-24 15:17:09,743 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2018-01-24 15:17:09,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-24 15:17:09,744 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:17:09,744 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] [2018-01-24 15:17:09,744 INFO L371 AbstractCegarLoop]: === Iteration 5 === [cmemchrErr1RequiresViolation, cmemchrErr0RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 15:17:09,744 INFO L82 PathProgramCache]: Analyzing trace with hash 423617884, now seen corresponding path program 1 times [2018-01-24 15:17:09,744 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:17:09,745 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:17:09,745 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:17:09,746 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:17:09,746 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:17:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:17:09,759 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:17:09,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 15:17:09,805 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:17:09,805 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 15:17:09,805 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:17:09,805 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 15:17:09,806 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 15:17:09,806 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 15:17:09,806 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 4 states. [2018-01-24 15:17:09,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:17:09,836 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2018-01-24 15:17:09,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 15:17:09,836 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-01-24 15:17:09,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:17:09,837 INFO L225 Difference]: With dead ends: 47 [2018-01-24 15:17:09,837 INFO L226 Difference]: Without dead ends: 26 [2018-01-24 15:17:09,837 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 [2018-01-24 15:17:09,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-01-24 15:17:09,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-01-24 15:17:09,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-01-24 15:17:09,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-01-24 15:17:09,841 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 20 [2018-01-24 15:17:09,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:17:09,841 INFO L432 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-01-24 15:17:09,841 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 15:17:09,841 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-01-24 15:17:09,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-24 15:17:09,842 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:17:09,842 INFO L322 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:17:09,842 INFO L371 AbstractCegarLoop]: === Iteration 6 === [cmemchrErr1RequiresViolation, cmemchrErr0RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-24 15:17:09,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1860785903, now seen corresponding path program 2 times [2018-01-24 15:17:09,842 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:17:09,843 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:17:09,843 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:17:09,843 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:17:09,843 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:17:09,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:17:09,860 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:17:10,119 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 15:17:10,119 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 15:17:10,119 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 15:17:10,120 INFO L183 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-01-24 15:17:10,120 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-24 15:17:10,120 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 15:17:10,120 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 15:17:10,127 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-24 15:17:10,127 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-01-24 15:17:10,137 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 15:17:10,142 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 15:17:10,145 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 15:17:10,148 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 15:17:10,151 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 15:17:10,152 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 15:17:10,154 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 15:17:10,154 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 15:17:10,342 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 15:17:10,342 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 15:17:10,775 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 15:17:10,795 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 15:17:10,795 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-24 15:17:10,798 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-24 15:17:10,798 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-01-24 15:17:10,813 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 15:17:10,824 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 15:17:10,841 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 15:17:10,845 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 15:17:10,849 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 15:17:10,849 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 15:17:10,853 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 15:17:10,853 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-24 15:17:10,906 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 15:17:10,906 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 15:17:10,936 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 15:17:10,938 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-24 15:17:10,938 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14] total 35 [2018-01-24 15:17:10,938 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-24 15:17:10,939 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-24 15:17:10,939 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-24 15:17:10,939 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1133, Unknown=0, NotChecked=0, Total=1260 [2018-01-24 15:17:10,939 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 23 states. [2018-01-24 15:17:11,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:17:11,612 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2018-01-24 15:17:11,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-01-24 15:17:11,613 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 25 [2018-01-24 15:17:11,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:17:11,613 INFO L225 Difference]: With dead ends: 32 [2018-01-24 15:17:11,613 INFO L226 Difference]: Without dead ends: 0 [2018-01-24 15:17:11,615 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 68 SyntacticMatches, 10 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=309, Invalid=2343, Unknown=0, NotChecked=0, Total=2652 [2018-01-24 15:17:11,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-24 15:17:11,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-24 15:17:11,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-24 15:17:11,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-24 15:17:11,615 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-01-24 15:17:11,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:17:11,616 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-24 15:17:11,616 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-24 15:17:11,616 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-24 15:17:11,616 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-24 15:17:11,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-24 15:17:12,001 WARN L146 SmtUtils]: Spent 229ms on a formula simplification. DAG size of input: 95 DAG size of output 65 [2018-01-24 15:17:12,023 INFO L401 ceAbstractionStarter]: For program point cmemchrEXIT(lines 540 551) no Hoare annotation was computed. [2018-01-24 15:17:12,023 INFO L401 ceAbstractionStarter]: For program point L546(line 546) no Hoare annotation was computed. [2018-01-24 15:17:12,024 INFO L401 ceAbstractionStarter]: For program point L545(lines 545 548) no Hoare annotation was computed. [2018-01-24 15:17:12,024 INFO L401 ceAbstractionStarter]: For program point cmemchrFINAL(lines 540 551) no Hoare annotation was computed. [2018-01-24 15:17:12,024 INFO L401 ceAbstractionStarter]: For program point L543(lines 543 549) no Hoare annotation was computed. [2018-01-24 15:17:12,024 INFO L404 ceAbstractionStarter]: At program point cmemchrENTRY(lines 540 551) the Hoare annotation is: true [2018-01-24 15:17:12,024 INFO L401 ceAbstractionStarter]: For program point L546'(line 546) no Hoare annotation was computed. [2018-01-24 15:17:12,024 INFO L401 ceAbstractionStarter]: For program point cmemchrErr1RequiresViolation(lines 1 565) no Hoare annotation was computed. [2018-01-24 15:17:12,025 INFO L397 ceAbstractionStarter]: At program point L545'''(lines 545 548) the Hoare annotation is: (let ((.cse0 (select |#length| |cmemchr_#in~s.base|))) (let ((.cse1 (= cmemchr_~p~3.offset 0)) (.cse2 (not (= 0 |cmemchr_#in~s.offset|))) (.cse3 (not (= (select |#valid| |cmemchr_#in~s.base|) 1))) (.cse4 (< .cse0 1))) (and (or (< 1 |cmemchr_#in~n|) (not (= .cse0 |cmemchr_#in~n|)) (and (<= cmemchr_~n 1) .cse1) .cse2 .cse3 .cse4) (let ((.cse8 (select |#length| cmemchr_~s.base)) (.cse5 (select |#length| cmemchr_~p~3.base))) (let ((.cse10 (<= 1 .cse5)) (.cse6 (= 1 (select |#valid| cmemchr_~p~3.base))) (.cse7 (= 0 cmemchr_~s.offset)) (.cse12 (<= 1 .cse8)) (.cse9 (= 1 (select |#valid| cmemchr_~s.base)))) (or (< |cmemchr_#in~n| .cse0) (and (= cmemchr_~n .cse5) .cse6 .cse7 (= cmemchr_~n .cse8) .cse9 .cse1 .cse10) .cse2 (let ((.cse11 (+ cmemchr_~n 1))) (and (<= .cse11 .cse5) (= cmemchr_~p~3.offset 1) .cse6 .cse7 .cse12 (not (= (mod (+ .cse5 4294967295) 4294967296) 0)) .cse9 .cse10 (<= .cse5 .cse11))) (< .cse0 |cmemchr_#in~n|) .cse3 .cse4 (let ((.cse13 (+ cmemchr_~p~3.offset cmemchr_~n))) (and (<= 2 cmemchr_~p~3.offset) (<= (+ cmemchr_~p~3.offset 1) .cse5) .cse6 .cse7 (<= .cse13 .cse5) (<= .cse5 .cse13) .cse12 .cse9)))))))) [2018-01-24 15:17:12,025 INFO L401 ceAbstractionStarter]: For program point cmemchrErr0RequiresViolation(lines 1 565) no Hoare annotation was computed. [2018-01-24 15:17:12,026 INFO L401 ceAbstractionStarter]: For program point L543'(lines 543 549) no Hoare annotation was computed. [2018-01-24 15:17:12,026 INFO L401 ceAbstractionStarter]: For program point L545'(lines 545 548) no Hoare annotation was computed. [2018-01-24 15:17:12,026 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 565) no Hoare annotation was computed. [2018-01-24 15:17:12,026 INFO L397 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 565) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-01-24 15:17:12,026 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 565) no Hoare annotation was computed. [2018-01-24 15:17:12,026 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 565) the Hoare annotation is: true [2018-01-24 15:17:12,027 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 565) no Hoare annotation was computed. [2018-01-24 15:17:12,027 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 565) the Hoare annotation is: true [2018-01-24 15:17:12,027 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 565) no Hoare annotation was computed. [2018-01-24 15:17:12,027 INFO L397 ceAbstractionStarter]: At program point L563(line 563) the Hoare annotation is: (and (= main_~n~5 (select |#length| main_~nondetArea~5.base)) (= 0 |main_#t~malloc6.offset|) (<= 1 main_~n~5) (= main_~n~5 (select |#length| |main_#t~malloc6.base|)) (= 0 main_~nondetArea~5.offset) (= (store |#valid| |main_#t~malloc6.base| (select (store |#valid| |main_#t~malloc6.base| 0) |main_#t~malloc6.base|)) |old(#valid)|) (= 1 (select |#valid| |main_#t~malloc6.base|)) (= 1 (select |#valid| main_~nondetArea~5.base))) [2018-01-24 15:17:12,027 INFO L401 ceAbstractionStarter]: For program point L562'(line 562) no Hoare annotation was computed. [2018-01-24 15:17:12,027 INFO L401 ceAbstractionStarter]: For program point L562(line 562) no Hoare annotation was computed. [2018-01-24 15:17:12,027 INFO L401 ceAbstractionStarter]: For program point L563'(line 563) no Hoare annotation was computed. [2018-01-24 15:17:12,027 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 552 565) no Hoare annotation was computed. [2018-01-24 15:17:12,027 INFO L401 ceAbstractionStarter]: For program point L556(lines 556 558) no Hoare annotation was computed. [2018-01-24 15:17:12,028 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 552 565) no Hoare annotation was computed. [2018-01-24 15:17:12,028 INFO L397 ceAbstractionStarter]: At program point mainENTRY(lines 552 565) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-01-24 15:17:12,028 INFO L401 ceAbstractionStarter]: For program point L562''(line 562) no Hoare annotation was computed. [2018-01-24 15:17:12,028 INFO L401 ceAbstractionStarter]: For program point L559'(lines 559 561) no Hoare annotation was computed. [2018-01-24 15:17:12,028 INFO L401 ceAbstractionStarter]: For program point L556''(lines 556 558) no Hoare annotation was computed. [2018-01-24 15:17:12,028 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 552 565) no Hoare annotation was computed. [2018-01-24 15:17:12,039 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,040 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,040 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,040 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,040 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,041 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,041 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,041 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,041 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,042 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,042 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,042 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,042 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,042 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,043 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,043 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,043 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,049 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,049 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,050 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,050 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,050 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,050 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,051 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,051 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,051 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,051 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,052 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,052 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,052 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,052 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,052 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,053 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,053 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 03:17:12 BoogieIcfgContainer [2018-01-24 15:17:12,056 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 15:17:12,057 INFO L168 Benchmark]: Toolchain (without parser) took 6604.18 ms. Allocated memory was 307.2 MB in the beginning and 545.8 MB in the end (delta: 238.6 MB). Free memory was 267.3 MB in the beginning and 456.5 MB in the end (delta: -189.2 MB). Peak memory consumption was 178.5 MB. Max. memory is 5.3 GB. [2018-01-24 15:17:12,057 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 307.2 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 15:17:12,058 INFO L168 Benchmark]: CACSL2BoogieTranslator took 196.92 ms. Allocated memory is still 307.2 MB. Free memory was 266.3 MB in the beginning and 256.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-01-24 15:17:12,058 INFO L168 Benchmark]: Boogie Preprocessor took 35.23 ms. Allocated memory is still 307.2 MB. Free memory was 256.2 MB in the beginning and 254.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 15:17:12,058 INFO L168 Benchmark]: RCFGBuilder took 190.02 ms. Allocated memory is still 307.2 MB. Free memory was 254.2 MB in the beginning and 239.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. [2018-01-24 15:17:12,059 INFO L168 Benchmark]: TraceAbstraction took 6175.59 ms. Allocated memory was 307.2 MB in the beginning and 545.8 MB in the end (delta: 238.6 MB). Free memory was 239.7 MB in the beginning and 456.5 MB in the end (delta: -216.8 MB). Peak memory consumption was 150.9 MB. Max. memory is 5.3 GB. [2018-01-24 15:17:12,060 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 307.2 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 196.92 ms. Allocated memory is still 307.2 MB. Free memory was 266.3 MB in the beginning and 256.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 35.23 ms. Allocated memory is still 307.2 MB. Free memory was 256.2 MB in the beginning and 254.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 190.02 ms. Allocated memory is still 307.2 MB. Free memory was 254.2 MB in the beginning and 239.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 6175.59 ms. Allocated memory was 307.2 MB in the beginning and 545.8 MB in the end (delta: 238.6 MB). Free memory was 239.7 MB in the beginning and 456.5 MB in the end (delta: -216.8 MB). Peak memory consumption was 150.9 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 18 LocStat_MAX_WEQGRAPH_SIZE : 2 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 146 LocStat_NO_SUPPORTING_DISEQUALITIES : 12 LocStat_NO_DISJUNCTIONS : -36 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 25 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 44 TransStat_NO_SUPPORTING_DISEQUALITIES : 5 TransStat_NO_DISJUNCTIONS : 26 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 1.122986 RENAME_VARIABLES(MILLISECONDS) : 0.295047 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 1.075938 PROJECTAWAY(MILLISECONDS) : 0.194061 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.175868 DISJOIN(MILLISECONDS) : 2.077125 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.351825 ADD_EQUALITY(MILLISECONDS) : 0.034068 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.018969 #CONJOIN_DISJUNCTIVE : 39 #RENAME_VARIABLES : 59 #UNFREEZE : 0 #CONJOIN : 73 #PROJECTAWAY : 56 #ADD_WEAK_EQUALITY : 3 #DISJOIN : 1 #RENAME_VARIABLES_DISJUNCTIVE : 57 #ADD_EQUALITY : 44 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 4 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 552]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 545]: Loop Invariant [2018-01-24 15:17:12,069 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,069 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,070 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,070 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,070 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,070 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,071 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,071 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,071 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,071 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,071 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,072 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,072 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,072 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,072 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,072 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,073 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,076 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,076 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,077 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,077 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,077 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,077 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,078 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,078 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,078 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,078 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,078 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,079 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,079 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,079 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,079 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,079 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-24 15:17:12,079 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length Derived loop invariant: (((((1 < \old(n) || !(unknown-#length-unknown[s] == \old(n))) || (n <= 1 && p == 0)) || !(0 == s)) || !(\valid[s] == 1)) || unknown-#length-unknown[s] < 1) && (((((((\old(n) < unknown-#length-unknown[s] || ((((((n == unknown-#length-unknown[p] && 1 == \valid[p]) && 0 == s) && n == unknown-#length-unknown[s]) && 1 == \valid[s]) && p == 0) && 1 <= unknown-#length-unknown[p])) || !(0 == s)) || ((((((((n + 1 <= unknown-#length-unknown[p] && p == 1) && 1 == \valid[p]) && 0 == s) && 1 <= unknown-#length-unknown[s]) && !((unknown-#length-unknown[p] + 4294967295) % 4294967296 == 0)) && 1 == \valid[s]) && 1 <= unknown-#length-unknown[p]) && unknown-#length-unknown[p] <= n + 1)) || unknown-#length-unknown[s] < \old(n)) || !(\valid[s] == 1)) || unknown-#length-unknown[s] < 1) || (((((((2 <= p && p + 1 <= unknown-#length-unknown[p]) && 1 == \valid[p]) && 0 == s) && p + n <= unknown-#length-unknown[p]) && unknown-#length-unknown[p] <= p + n) && 1 <= unknown-#length-unknown[s]) && 1 == \valid[s])) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 3 error locations. SAFE Result, 6.0s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 140 SDtfs, 213 SDslu, 764 SDs, 0 SdLazy, 680 SolverSat, 67 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 265 GetRequests, 119 SyntacticMatches, 14 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 14 NumberOfFragments, 240 HoareAnnotationTreeSize, 9 FomulaSimplifications, 45 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 490 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 205 NumberOfCodeBlocks, 205 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 281 ConstructedInterpolants, 4 QuantifiedInterpolants, 63005 SizeOfPredicates, 46 NumberOfNonLiveVariables, 456 ConjunctsInSsa, 188 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 2/57 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_15-17-12-085.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-VPDomainBenchmark-0-2018-01-24_15-17-12-085.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_15-17-12-085.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cmemchr-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_15-17-12-085.csv Received shutdown request...