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_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/array-memsafety/reverse_array_unsafe_false-valid-deref.i
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This is Ultimate 0.1.23-acfac67
[2018-01-28 20:57:56,348 INFO L170 SettingsManager]: Resetting all preferences to default values...
[2018-01-28 20:57:56,350 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values
[2018-01-28 20:57:56,367 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-01-28 20:57:56,368 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-01-28 20:57:56,369 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-01-28 20:57:56,370 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2018-01-28 20:57:56,372 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values
[2018-01-28 20:57:56,374 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2018-01-28 20:57:56,375 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2018-01-28 20:57:56,376 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2018-01-28 20:57:56,378 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values
[2018-01-28 20:57:56,379 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-01-28 20:57:56,381 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-01-28 20:57:56,382 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-01-28 20:57:56,385 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-01-28 20:57:56,387 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values
[2018-01-28 20:57:56,389 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-01-28 20:57:56,391 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-01-28 20:57:56,392 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-01-28 20:57:56,395 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2018-01-28 20:57:56,395 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2018-01-28 20:57:56,396 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-01-28 20:57:56,397 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-01-28 20:57:56,398 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values
[2018-01-28 20:57:56,399 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2018-01-28 20:57:56,399 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values
[2018-01-28 20:57:56,400 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring...
[2018-01-28 20:57:56,400 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2018-01-28 20:57:56,401 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values
[2018-01-28 20:57:56,401 INFO L181 SettingsManager]: Finished resetting all preferences to default values...
[2018-01-28 20:57:56,402 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf
[2018-01-28 20:57:56,413 INFO L110 SettingsManager]: Loading preferences was successful
[2018-01-28 20:57:56,413 INFO L112 SettingsManager]: Preferences different from defaults after loading the file:
[2018-01-28 20:57:56,414 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-01-28 20:57:56,414 INFO L133 SettingsManager]: * to procedures, called more than once=true
[2018-01-28 20:57:56,414 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2018-01-28 20:57:56,415 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain
[2018-01-28 20:57:56,415 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true
[2018-01-28 20:57:56,416 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-01-28 20:57:56,416 INFO L133 SettingsManager]: * sizeof long=4
[2018-01-28 20:57:56,416 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false
[2018-01-28 20:57:56,416 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true
[2018-01-28 20:57:56,416 INFO L133 SettingsManager]: * sizeof POINTER=4
[2018-01-28 20:57:56,417 INFO L133 SettingsManager]: * Check division by zero=IGNORE
[2018-01-28 20:57:56,417 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2018-01-28 20:57:56,417 INFO L133 SettingsManager]: * Bitprecise bitfields=true
[2018-01-28 20:57:56,417 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2018-01-28 20:57:56,417 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-01-28 20:57:56,418 INFO L133 SettingsManager]: * sizeof long double=12
[2018-01-28 20:57:56,418 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-01-28 20:57:56,418 INFO L133 SettingsManager]: * Size of a code block=SingleStatement
[2018-01-28 20:57:56,418 INFO L133 SettingsManager]: * To the following directory=./dump/
[2018-01-28 20:57:56,418 INFO L133 SettingsManager]: * Add additional assume for each assert=false
[2018-01-28 20:57:56,419 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode
[2018-01-28 20:57:56,419 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-01-28 20:57:56,419 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-01-28 20:57:56,419 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK
[2018-01-28 20:57:56,420 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2018-01-28 20:57:56,420 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-01-28 20:57:56,420 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL
[2018-01-28 20:57:56,420 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2018-01-28 20:57:56,420 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-01-28 20:57:56,421 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-01-28 20:57:56,421 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2018-01-28 20:57:56,422 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR
[2018-01-28 20:57:56,458 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2018-01-28 20:57:56,471 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized
[2018-01-28 20:57:56,475 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected.
[2018-01-28 20:57:56,476 INFO L271 PluginConnector]: Initializing CDTParser...
[2018-01-28 20:57:56,477 INFO L276 PluginConnector]: CDTParser initialized
[2018-01-28 20:57:56,478 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/reverse_array_unsafe_false-valid-deref.i
[2018-01-28 20:57:56,645 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-01-28 20:57:56,650 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2018-01-28 20:57:56,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-01-28 20:57:56,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-01-28 20:57:56,657 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized
[2018-01-28 20:57:56,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 08:57:56" (1/1) ...
[2018-01-28 20:57:56,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ba793f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:56, skipping insertion in model container
[2018-01-28 20:57:56,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 08:57:56" (1/1) ...
[2018-01-28 20:57:56,680 INFO L153 Dispatcher]: Using SV-COMP mode
[2018-01-28 20:57:56,725 INFO L153 Dispatcher]: Using SV-COMP mode
[2018-01-28 20:57:56,867 INFO L450 PostProcessor]: Settings: Checked method=main
[2018-01-28 20:57:56,891 INFO L450 PostProcessor]: Settings: Checked method=main
[2018-01-28 20:57:56,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:56 WrapperNode
[2018-01-28 20:57:56,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-01-28 20:57:56,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-01-28 20:57:56,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2018-01-28 20:57:56,902 INFO L276 PluginConnector]: Boogie Preprocessor initialized
[2018-01-28 20:57:56,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:56" (1/1) ...
[2018-01-28 20:57:56,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:56" (1/1) ...
[2018-01-28 20:57:56,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:56" (1/1) ...
[2018-01-28 20:57:56,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:56" (1/1) ...
[2018-01-28 20:57:56,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:56" (1/1) ...
[2018-01-28 20:57:56,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:56" (1/1) ...
[2018-01-28 20:57:56,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:56" (1/1) ...
[2018-01-28 20:57:56,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-01-28 20:57:56,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-01-28 20:57:56,970 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2018-01-28 20:57:56,970 INFO L276 PluginConnector]: RCFGBuilder initialized
[2018-01-28 20:57:56,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:56" (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
[2018-01-28 20:57:57,035 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2018-01-28 20:57:57,036 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-01-28 20:57:57,036 INFO L136 BoogieDeclarations]: Found implementation of procedure main
[2018-01-28 20:57:57,036 INFO L128 BoogieDeclarations]: Found specification of procedure write~int
[2018-01-28 20:57:57,036 INFO L128 BoogieDeclarations]: Found specification of procedure read~int
[2018-01-28 20:57:57,036 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free
[2018-01-28 20:57:57,036 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2018-01-28 20:57:57,036 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc
[2018-01-28 20:57:57,036 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2018-01-28 20:57:57,036 INFO L128 BoogieDeclarations]: Found specification of procedure main
[2018-01-28 20:57:57,037 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2018-01-28 20:57:57,037 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-01-28 20:57:57,401 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-01-28 20:57:57,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 08:57:57 BoogieIcfgContainer
[2018-01-28 20:57:57,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-01-28 20:57:57,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-01-28 20:57:57,403 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2018-01-28 20:57:57,406 INFO L276 PluginConnector]: TraceAbstraction initialized
[2018-01-28 20:57:57,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 08:57:56" (1/3) ...
[2018-01-28 20:57:57,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681cd9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 08:57:57, skipping insertion in model container
[2018-01-28 20:57:57,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:56" (2/3) ...
[2018-01-28 20:57:57,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681cd9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 08:57:57, skipping insertion in model container
[2018-01-28 20:57:57,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 08:57:57" (3/3) ...
[2018-01-28 20:57:57,419 INFO L107 eAbstractionObserver]: Analyzing ICFG reverse_array_unsafe_false-valid-deref.i
[2018-01-28 20:57:57,428 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-01-28 20:57:57,436 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations.
[2018-01-28 20:57:57,491 INFO L322 AbstractCegarLoop]: Interprodecural is true
[2018-01-28 20:57:57,491 INFO L323 AbstractCegarLoop]: Hoare is true
[2018-01-28 20:57:57,491 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-01-28 20:57:57,491 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK
[2018-01-28 20:57:57,492 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-01-28 20:57:57,492 INFO L327 AbstractCegarLoop]: Difference is false
[2018-01-28 20:57:57,492 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-01-28 20:57:57,492 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-01-28 20:57:57,493 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure
[2018-01-28 20:57:57,542 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states.
[2018-01-28 20:57:57,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-01-28 20:57:57,554 INFO L322 BasicCegarLoop]: Found error trace
[2018-01-28 20:57:57,555 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-01-28 20:57:57,555 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]===
[2018-01-28 20:57:57,561 INFO L82 PathProgramCache]: Analyzing trace with hash -623242573, now seen corresponding path program 1 times
[2018-01-28 20:57:57,562 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-01-28 20:57:57,563 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-01-28 20:57:57,610 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-28 20:57:57,610 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-01-28 20:57:57,610 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-28 20:57:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-01-28 20:57:57,685 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs.
[2018-01-28 20:57:57,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-01-28 20:57:57,744 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-01-28 20:57:57,745 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-01-28 20:57:57,748 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states
[2018-01-28 20:57:57,764 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2018-01-28 20:57:57,765 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2018-01-28 20:57:57,768 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 2 states.
[2018-01-28 20:57:57,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-01-28 20:57:57,801 INFO L93 Difference]: Finished difference Result 143 states and 152 transitions.
[2018-01-28 20:57:57,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2018-01-28 20:57:57,803 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19
[2018-01-28 20:57:57,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-01-28 20:57:57,934 INFO L225 Difference]: With dead ends: 143
[2018-01-28 20:57:57,934 INFO L226 Difference]: Without dead ends: 89
[2018-01-28 20:57:57,952 INFO L533 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
[2018-01-28 20:57:57,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states.
[2018-01-28 20:57:58,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89.
[2018-01-28 20:57:58,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states.
[2018-01-28 20:57:58,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions.
[2018-01-28 20:57:58,016 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 19
[2018-01-28 20:57:58,017 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-01-28 20:57:58,017 INFO L432 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions.
[2018-01-28 20:57:58,017 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2018-01-28 20:57:58,017 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions.
[2018-01-28 20:57:58,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2018-01-28 20:57:58,019 INFO L322 BasicCegarLoop]: Found error trace
[2018-01-28 20:57:58,019 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-01-28 20:57:58,021 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]===
[2018-01-28 20:57:58,021 INFO L82 PathProgramCache]: Analyzing trace with hash -2140680272, now seen corresponding path program 1 times
[2018-01-28 20:57:58,021 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-01-28 20:57:58,022 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-01-28 20:57:58,023 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-28 20:57:58,023 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-01-28 20:57:58,023 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-28 20:57:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-01-28 20:57:58,075 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs.
[2018-01-28 20:57:58,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-01-28 20:57:58,239 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-01-28 20:57:58,239 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-01-28 20:57:58,241 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-01-28 20:57:58,244 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-01-28 20:57:58,244 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2018-01-28 20:57:58,245 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand 4 states.
[2018-01-28 20:57:58,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-01-28 20:57:58,437 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions.
[2018-01-28 20:57:58,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2018-01-28 20:57:58,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20
[2018-01-28 20:57:58,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-01-28 20:57:58,440 INFO L225 Difference]: With dead ends: 89
[2018-01-28 20:57:58,440 INFO L226 Difference]: Without dead ends: 85
[2018-01-28 20:57:58,441 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2018-01-28 20:57:58,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2018-01-28 20:57:58,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85.
[2018-01-28 20:57:58,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states.
[2018-01-28 20:57:58,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions.
[2018-01-28 20:57:58,453 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 20
[2018-01-28 20:57:58,453 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-01-28 20:57:58,454 INFO L432 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions.
[2018-01-28 20:57:58,454 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-01-28 20:57:58,454 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions.
[2018-01-28 20:57:58,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2018-01-28 20:57:58,455 INFO L322 BasicCegarLoop]: Found error trace
[2018-01-28 20:57:58,455 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-01-28 20:57:58,455 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]===
[2018-01-28 20:57:58,455 INFO L82 PathProgramCache]: Analyzing trace with hash -2140680271, now seen corresponding path program 1 times
[2018-01-28 20:57:58,456 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-01-28 20:57:58,456 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-01-28 20:57:58,457 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-28 20:57:58,457 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-01-28 20:57:58,458 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-28 20:57:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-01-28 20:57:58,495 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs.
[2018-01-28 20:57:58,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-01-28 20:57:58,580 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-01-28 20:57:58,580 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-01-28 20:57:58,580 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-01-28 20:57:58,581 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-01-28 20:57:58,581 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-01-28 20:57:58,581 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand 4 states.
[2018-01-28 20:57:58,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-01-28 20:57:58,742 INFO L93 Difference]: Finished difference Result 215 states and 226 transitions.
[2018-01-28 20:57:58,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2018-01-28 20:57:58,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20
[2018-01-28 20:57:58,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-01-28 20:57:58,747 INFO L225 Difference]: With dead ends: 215
[2018-01-28 20:57:58,748 INFO L226 Difference]: Without dead ends: 168
[2018-01-28 20:57:58,753 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-01-28 20:57:58,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states.
[2018-01-28 20:57:58,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 90.
[2018-01-28 20:57:58,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states.
[2018-01-28 20:57:58,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions.
[2018-01-28 20:57:58,776 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 20
[2018-01-28 20:57:58,778 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-01-28 20:57:58,778 INFO L432 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions.
[2018-01-28 20:57:58,778 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-01-28 20:57:58,778 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions.
[2018-01-28 20:57:58,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2018-01-28 20:57:58,779 INFO L322 BasicCegarLoop]: Found error trace
[2018-01-28 20:57:58,779 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-01-28 20:57:58,779 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]===
[2018-01-28 20:57:58,780 INFO L82 PathProgramCache]: Analyzing trace with hash -2140680235, now seen corresponding path program 1 times
[2018-01-28 20:57:58,780 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-01-28 20:57:58,780 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-01-28 20:57:58,782 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-28 20:57:58,783 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-01-28 20:57:58,783 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-28 20:57:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-01-28 20:57:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-01-28 20:57:58,870 INFO L389 BasicCegarLoop]: Counterexample might be feasible
[2018-01-28 20:57:58,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 08:57:58 BoogieIcfgContainer
[2018-01-28 20:57:58,901 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-01-28 20:57:58,902 INFO L168 Benchmark]: Toolchain (without parser) took 2256.76 ms. Allocated memory was 297.8 MB in the beginning and 458.2 MB in the end (delta: 160.4 MB). Free memory was 256.7 MB in the beginning and 391.8 MB in the end (delta: -135.1 MB). Peak memory consumption was 25.3 MB. Max. memory is 5.3 GB.
[2018-01-28 20:57:58,905 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 297.8 MB. Free memory is still 262.6 MB. There was no memory consumed. Max. memory is 5.3 GB.
[2018-01-28 20:57:58,905 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.76 ms. Allocated memory is still 297.8 MB. Free memory was 256.7 MB in the beginning and 246.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB.
[2018-01-28 20:57:58,905 INFO L168 Benchmark]: Boogie Preprocessor took 68.06 ms. Allocated memory is still 297.8 MB. Free memory was 246.7 MB in the beginning and 244.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB.
[2018-01-28 20:57:58,906 INFO L168 Benchmark]: RCFGBuilder took 431.79 ms. Allocated memory is still 297.8 MB. Free memory was 244.7 MB in the beginning and 221.8 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 5.3 GB.
[2018-01-28 20:57:58,906 INFO L168 Benchmark]: TraceAbstraction took 1498.71 ms. Allocated memory was 297.8 MB in the beginning and 458.2 MB in the end (delta: 160.4 MB). Free memory was 221.8 MB in the beginning and 391.8 MB in the end (delta: -170.0 MB). There was no memory consumed. Max. memory is 5.3 GB.
[2018-01-28 20:57:58,910 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.18 ms. Allocated memory is still 297.8 MB. Free memory is still 262.6 MB. There was no memory consumed. Max. memory is 5.3 GB.
* CACSL2BoogieTranslator took 249.76 ms. Allocated memory is still 297.8 MB. Free memory was 256.7 MB in the beginning and 246.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB.
* Boogie Preprocessor took 68.06 ms. Allocated memory is still 297.8 MB. Free memory was 246.7 MB in the beginning and 244.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB.
* RCFGBuilder took 431.79 ms. Allocated memory is still 297.8 MB. Free memory was 244.7 MB in the beginning and 221.8 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 5.3 GB.
* TraceAbstraction took 1498.71 ms. Allocated memory was 297.8 MB in the beginning and 458.2 MB in the end (delta: 160.4 MB). Free memory was 221.8 MB in the beginning and 391.8 MB in the end (delta: -170.0 MB). There was no memory consumed. Max. memory is 5.3 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 1]: pointer dereference may fail
pointer dereference may fail
We found a FailurePath:
[L541] int i, j, tmp;
[L542] int length = __VERIFIER_nondet_int();
VAL [__VERIFIER_nondet_int()=1, length=1]
[L543] COND FALSE !(length < 1)
VAL [length=1]
[L544] COND FALSE !(length % 2 == 0)
VAL [length=1]
[L545] EXPR, FCALL __builtin_alloca (length)
VAL [__builtin_alloca (length)={3:0}, length=1]
[L545] int *arr = __builtin_alloca (length);
VAL [__builtin_alloca (length)={3:0}, arr={3:0}, length=1]
[L546] i=0
VAL [__builtin_alloca (length)={3:0}, arr={3:0}, i=0, length=1]
[L546] COND TRUE i<length
VAL [__builtin_alloca (length)={3:0}, arr={3:0}, i=0, length=1]
[L547] FCALL arr[i]
VAL [__builtin_alloca (length)={3:0}, arr={3:0}, i=0, length=1]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 92 locations, 21 error locations. UNSAFE Result, 1.4s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 286 SDtfs, 230 SDslu, 170 SDs, 0 SdLazy, 76 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred 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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 78 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 1806 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: 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/reverse_array_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-28_20-57-58-919.csv
Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/reverse_array_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-28_20-57-58-919.csv
Received shutdown request...