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/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf -i ../../../trunk/examples/svcomp/array-memsafety/cstrpbrk_unsafe_false-valid-deref.i
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This is Ultimate 0.1.23-26d9e06-m
[2018-02-02 09:46:21,731 INFO L170 SettingsManager]: Resetting all preferences to default values...
[2018-02-02 09:46:21,733 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values
[2018-02-02 09:46:21,744 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-02-02 09:46:21,744 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-02-02 09:46:21,745 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-02-02 09:46:21,746 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2018-02-02 09:46:21,747 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values
[2018-02-02 09:46:21,748 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2018-02-02 09:46:21,749 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2018-02-02 09:46:21,750 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2018-02-02 09:46:21,750 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values
[2018-02-02 09:46:21,751 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-02-02 09:46:21,752 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-02-02 09:46:21,753 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-02-02 09:46:21,755 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-02-02 09:46:21,756 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values
[2018-02-02 09:46:21,758 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-02-02 09:46:21,759 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-02-02 09:46:21,760 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-02-02 09:46:21,762 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2018-02-02 09:46:21,762 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2018-02-02 09:46:21,762 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-02-02 09:46:21,763 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-02-02 09:46:21,764 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values
[2018-02-02 09:46:21,765 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2018-02-02 09:46:21,765 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values
[2018-02-02 09:46:21,766 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring...
[2018-02-02 09:46:21,766 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2018-02-02 09:46:21,766 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values
[2018-02-02 09:46:21,767 INFO L181 SettingsManager]: Finished resetting all preferences to default values...
[2018-02-02 09:46:21,767 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf
[2018-02-02 09:46:21,777 INFO L110 SettingsManager]: Loading preferences was successful
[2018-02-02 09:46:21,777 INFO L112 SettingsManager]: Preferences different from defaults after loading the file:
[2018-02-02 09:46:21,778 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2018-02-02 09:46:21,779 INFO L133 SettingsManager]: * Create parallel compositions if possible=false
[2018-02-02 09:46:21,779 INFO L133 SettingsManager]: * Use SBE=true
[2018-02-02 09:46:21,779 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-02-02 09:46:21,779 INFO L133 SettingsManager]: * sizeof long=4
[2018-02-02 09:46:21,779 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false
[2018-02-02 09:46:21,780 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true
[2018-02-02 09:46:21,780 INFO L133 SettingsManager]: * sizeof POINTER=4
[2018-02-02 09:46:21,780 INFO L133 SettingsManager]: * Check division by zero=IGNORE
[2018-02-02 09:46:21,780 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2018-02-02 09:46:21,780 INFO L133 SettingsManager]: * Bitprecise bitfields=true
[2018-02-02 09:46:21,780 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2018-02-02 09:46:21,781 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-02-02 09:46:21,781 INFO L133 SettingsManager]: * sizeof long double=12
[2018-02-02 09:46:21,781 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-02-02 09:46:21,781 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements
[2018-02-02 09:46:21,781 INFO L133 SettingsManager]: * To the following directory=./dump/
[2018-02-02 09:46:21,781 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode
[2018-02-02 09:46:21,781 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-02-02 09:46:21,782 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-02-02 09:46:21,782 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation
[2018-02-02 09:46:21,814 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2018-02-02 09:46:21,823 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized
[2018-02-02 09:46:21,827 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected.
[2018-02-02 09:46:21,828 INFO L271 PluginConnector]: Initializing CDTParser...
[2018-02-02 09:46:21,829 INFO L276 PluginConnector]: CDTParser initialized
[2018-02-02 09:46:21,829 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrpbrk_unsafe_false-valid-deref.i
[2018-02-02 09:46:21,967 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-02-02 09:46:21,968 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2018-02-02 09:46:21,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-02-02 09:46:21,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-02-02 09:46:21,974 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized
[2018-02-02 09:46:21,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:46:21" (1/1) ...
[2018-02-02 09:46:21,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@679e69c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:46:21, skipping insertion in model container
[2018-02-02 09:46:21,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:46:21" (1/1) ...
[2018-02-02 09:46:21,993 INFO L153 Dispatcher]: Using SV-COMP mode
[2018-02-02 09:46:22,022 INFO L153 Dispatcher]: Using SV-COMP mode
[2018-02-02 09:46:22,112 INFO L450 PostProcessor]: Settings: Checked method=main
[2018-02-02 09:46:22,127 INFO L450 PostProcessor]: Settings: Checked method=main
[2018-02-02 09:46:22,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:46:22 WrapperNode
[2018-02-02 09:46:22,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-02-02 09:46:22,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-02-02 09:46:22,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2018-02-02 09:46:22,134 INFO L276 PluginConnector]: Boogie Preprocessor initialized
[2018-02-02 09:46:22,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:46:22" (1/1) ...
[2018-02-02 09:46:22,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:46:22" (1/1) ...
[2018-02-02 09:46:22,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:46:22" (1/1) ...
[2018-02-02 09:46:22,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:46:22" (1/1) ...
[2018-02-02 09:46:22,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:46:22" (1/1) ...
[2018-02-02 09:46:22,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:46:22" (1/1) ...
[2018-02-02 09:46:22,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:46:22" (1/1) ...
[2018-02-02 09:46:22,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-02-02 09:46:22,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-02-02 09:46:22,164 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2018-02-02 09:46:22,164 INFO L276 PluginConnector]: RCFGBuilder initialized
[2018-02-02 09:46:22,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:46:22" (1/1) ...
No working directory specified, using /home/ultimate/work/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
[2018-02-02 09:46:22,202 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2018-02-02 09:46:22,202 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-02-02 09:46:22,202 INFO L136 BoogieDeclarations]: Found implementation of procedure build_nondet_String
[2018-02-02 09:46:22,202 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrpbrk
[2018-02-02 09:46:22,202 INFO L136 BoogieDeclarations]: Found implementation of procedure main
[2018-02-02 09:46:22,203 INFO L128 BoogieDeclarations]: Found specification of procedure write~int
[2018-02-02 09:46:22,203 INFO L128 BoogieDeclarations]: Found specification of procedure read~int
[2018-02-02 09:46:22,203 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free
[2018-02-02 09:46:22,203 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2018-02-02 09:46:22,203 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc
[2018-02-02 09:46:22,203 INFO L128 BoogieDeclarations]: Found specification of procedure malloc
[2018-02-02 09:46:22,203 INFO L128 BoogieDeclarations]: Found specification of procedure free
[2018-02-02 09:46:22,203 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2018-02-02 09:46:22,203 INFO L128 BoogieDeclarations]: Found specification of procedure build_nondet_String
[2018-02-02 09:46:22,204 INFO L128 BoogieDeclarations]: Found specification of procedure cstrpbrk
[2018-02-02 09:46:22,204 INFO L128 BoogieDeclarations]: Found specification of procedure main
[2018-02-02 09:46:22,204 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2018-02-02 09:46:22,204 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-02-02 09:46:22,364 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-02-02 09:46:22,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:46:22 BoogieIcfgContainer
[2018-02-02 09:46:22,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-02-02 09:46:22,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-02-02 09:46:22,365 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2018-02-02 09:46:22,368 INFO L276 PluginConnector]: TraceAbstraction initialized
[2018-02-02 09:46:22,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:46:21" (1/3) ...
[2018-02-02 09:46:22,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7f5cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:46:22, skipping insertion in model container
[2018-02-02 09:46:22,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:46:22" (2/3) ...
[2018-02-02 09:46:22,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7f5cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:46:22, skipping insertion in model container
[2018-02-02 09:46:22,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:46:22" (3/3) ...
[2018-02-02 09:46:22,371 INFO L107 eAbstractionObserver]: Analyzing ICFG cstrpbrk_unsafe_false-valid-deref.i
[2018-02-02 09:46:22,377 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION
[2018-02-02 09:46:22,383 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations.
[2018-02-02 09:46:22,416 INFO L322 AbstractCegarLoop]: Interprodecural is true
[2018-02-02 09:46:22,416 INFO L323 AbstractCegarLoop]: Hoare is false
[2018-02-02 09:46:22,416 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation
[2018-02-02 09:46:22,417 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL
[2018-02-02 09:46:22,417 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-02-02 09:46:22,417 INFO L327 AbstractCegarLoop]: Difference is false
[2018-02-02 09:46:22,417 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-02-02 09:46:22,417 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-02-02 09:46:22,418 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure
[2018-02-02 09:46:22,430 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states.
[2018-02-02 09:46:22,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2018-02-02 09:46:22,439 INFO L343 BasicCegarLoop]: Found error trace
[2018-02-02 09:46:22,440 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-02-02 09:46:22,440 INFO L371 AbstractCegarLoop]: === Iteration 1 === [build_nondet_StringErr0RequiresViolation, build_nondet_StringErr1RequiresViolation, cstrpbrkErr3RequiresViolation, cstrpbrkErr1RequiresViolation, cstrpbrkErr9RequiresViolation, cstrpbrkErr7RequiresViolation, cstrpbrkErr2RequiresViolation, cstrpbrkErr8RequiresViolation, cstrpbrkErr4RequiresViolation, cstrpbrkErr0RequiresViolation, cstrpbrkErr6RequiresViolation, cstrpbrkErr5RequiresViolation, mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]===
[2018-02-02 09:46:22,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1167838739, now seen corresponding path program 1 times
[2018-02-02 09:46:22,493 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy
[2018-02-02 09:46:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-02-02 09:46:22,540 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs.
[2018-02-02 09:46:22,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-02-02 09:46:22,618 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-02-02 09:46:22,618 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-02-02 09:46:22,619 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state
[2018-02-02 09:46:22,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-02-02 09:46:22,620 INFO L182 omatonBuilderFactory]: Interpolants [68#true, 69#false, 70#(= 1 (select |#valid| |build_nondet_String_#t~malloc1.base|)), 71#(= 1 (select |#valid| build_nondet_String_~nondetString~0.base))]
[2018-02-02 09:46:22,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-02-02 09:46:22,621 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-02-02 09:46:22,632 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-02-02 09:46:22,632 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2018-02-02 09:46:22,634 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states.
[2018-02-02 09:46:22,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-02-02 09:46:22,812 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions.
[2018-02-02 09:46:22,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2018-02-02 09:46:22,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11
[2018-02-02 09:46:22,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-02-02 09:46:22,824 INFO L225 Difference]: With dead ends: 64
[2018-02-02 09:46:22,825 INFO L226 Difference]: Without dead ends: 61
[2018-02-02 09:46:22,826 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2018-02-02 09:46:22,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states.
[2018-02-02 09:46:22,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61.
[2018-02-02 09:46:22,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states.
[2018-02-02 09:46:22,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions.
[2018-02-02 09:46:22,861 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 11
[2018-02-02 09:46:22,861 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-02-02 09:46:22,861 INFO L432 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions.
[2018-02-02 09:46:22,861 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-02-02 09:46:22,861 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions.
[2018-02-02 09:46:22,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2018-02-02 09:46:22,862 INFO L343 BasicCegarLoop]: Found error trace
[2018-02-02 09:46:22,862 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-02-02 09:46:22,862 INFO L371 AbstractCegarLoop]: === Iteration 2 === [build_nondet_StringErr0RequiresViolation, build_nondet_StringErr1RequiresViolation, cstrpbrkErr3RequiresViolation, cstrpbrkErr1RequiresViolation, cstrpbrkErr9RequiresViolation, cstrpbrkErr7RequiresViolation, cstrpbrkErr2RequiresViolation, cstrpbrkErr8RequiresViolation, cstrpbrkErr4RequiresViolation, cstrpbrkErr0RequiresViolation, cstrpbrkErr6RequiresViolation, cstrpbrkErr5RequiresViolation, mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]===
[2018-02-02 09:46:22,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1167838738, now seen corresponding path program 1 times
[2018-02-02 09:46:22,863 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy
[2018-02-02 09:46:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-02-02 09:46:22,875 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs.
[2018-02-02 09:46:22,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-02-02 09:46:22,945 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-02-02 09:46:22,945 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-02-02 09:46:22,945 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state
[2018-02-02 09:46:22,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-02-02 09:46:22,946 INFO L182 omatonBuilderFactory]: Interpolants [199#true, 200#false, 201#(<= 1 build_nondet_String_~length~0), 202#(and (<= 1 build_nondet_String_~length~0) (= build_nondet_String_~length~0 (select |#length| |build_nondet_String_#t~malloc1.base|)) (= 0 |build_nondet_String_#t~malloc1.offset|)), 203#(and (<= 1 build_nondet_String_~length~0) (= build_nondet_String_~length~0 (select |#length| build_nondet_String_~nondetString~0.base)) (= build_nondet_String_~nondetString~0.offset 0))]
[2018-02-02 09:46:22,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-02-02 09:46:22,947 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-02-02 09:46:22,947 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-02-02 09:46:22,947 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2018-02-02 09:46:22,947 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 5 states.
[2018-02-02 09:46:22,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-02-02 09:46:22,986 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions.
[2018-02-02 09:46:22,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2018-02-02 09:46:22,987 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11
[2018-02-02 09:46:22,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-02-02 09:46:22,988 INFO L225 Difference]: With dead ends: 60
[2018-02-02 09:46:22,989 INFO L226 Difference]: Without dead ends: 60
[2018-02-02 09:46:22,989 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2018-02-02 09:46:22,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states.
[2018-02-02 09:46:22,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60.
[2018-02-02 09:46:22,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states.
[2018-02-02 09:46:22,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions.
[2018-02-02 09:46:22,994 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 11
[2018-02-02 09:46:22,994 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-02-02 09:46:22,995 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions.
[2018-02-02 09:46:22,995 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-02-02 09:46:22,995 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions.
[2018-02-02 09:46:22,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2018-02-02 09:46:22,996 INFO L343 BasicCegarLoop]: Found error trace
[2018-02-02 09:46:22,996 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-02-02 09:46:22,996 INFO L371 AbstractCegarLoop]: === Iteration 3 === [build_nondet_StringErr0RequiresViolation, build_nondet_StringErr1RequiresViolation, cstrpbrkErr3RequiresViolation, cstrpbrkErr1RequiresViolation, cstrpbrkErr9RequiresViolation, cstrpbrkErr7RequiresViolation, cstrpbrkErr2RequiresViolation, cstrpbrkErr8RequiresViolation, cstrpbrkErr4RequiresViolation, cstrpbrkErr0RequiresViolation, cstrpbrkErr6RequiresViolation, cstrpbrkErr5RequiresViolation, mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]===
[2018-02-02 09:46:22,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1764023599, now seen corresponding path program 1 times
[2018-02-02 09:46:22,997 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy
[2018-02-02 09:46:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-02-02 09:46:23,020 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs.
[2018-02-02 09:46:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-02-02 09:46:23,177 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-02-02 09:46:23,177 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11
[2018-02-02 09:46:23,177 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state
[2018-02-02 09:46:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-02-02 09:46:23,177 INFO L182 omatonBuilderFactory]: Interpolants [336#(= 1 (select |#valid| |cstrpbrk_#in~s1.base|)), 337#(= 1 (select |#valid| cstrpbrk_~sc1~0.base)), 326#true, 327#false, 328#(= 1 (select |#valid| build_nondet_String_~nondetString~0.base)), 329#(= 1 (select |#valid| |build_nondet_String_#res.base|)), 330#(= 1 (select |#valid| |main_#t~ret11.base|)), 331#(= 1 (select |#valid| main_~s1~0.base)), 332#(= |#valid| |old(#valid)|), 333#(= |#valid| (store |old(#valid)| |build_nondet_String_#t~malloc1.base| (select |#valid| |build_nondet_String_#t~malloc1.base|))), 334#(and (or (= build_nondet_String_~nondetString~0.base (@diff |old(#valid)| |#valid|)) (= |#valid| |old(#valid)|)) (= |#valid| (store |old(#valid)| (@diff |old(#valid)| |#valid|) (select |#valid| (@diff |old(#valid)| |#valid|))))), 335#(and (or (= 1 (select |#valid| (@diff |old(#valid)| |#valid|))) (= |#valid| |old(#valid)|)) (= |#valid| (store |old(#valid)| (@diff |old(#valid)| |#valid|) (select |#valid| (@diff |old(#valid)| |#valid|)))))]
[2018-02-02 09:46:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-02-02 09:46:23,178 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states
[2018-02-02 09:46:23,178 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2018-02-02 09:46:23,178 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132
[2018-02-02 09:46:23,178 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 12 states.
[2018-02-02 09:46:23,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-02-02 09:46:23,545 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions.
[2018-02-02 09:46:23,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2018-02-02 09:46:23,545 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29
[2018-02-02 09:46:23,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-02-02 09:46:23,546 INFO L225 Difference]: With dead ends: 57
[2018-02-02 09:46:23,546 INFO L226 Difference]: Without dead ends: 57
[2018-02-02 09:46:23,547 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380
[2018-02-02 09:46:23,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2018-02-02 09:46:23,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57.
[2018-02-02 09:46:23,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states.
[2018-02-02 09:46:23,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions.
[2018-02-02 09:46:23,551 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 29
[2018-02-02 09:46:23,553 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-02-02 09:46:23,553 INFO L432 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions.
[2018-02-02 09:46:23,553 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2018-02-02 09:46:23,553 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions.
[2018-02-02 09:46:23,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2018-02-02 09:46:23,554 INFO L343 BasicCegarLoop]: Found error trace
[2018-02-02 09:46:23,554 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-02-02 09:46:23,554 INFO L371 AbstractCegarLoop]: === Iteration 4 === [build_nondet_StringErr0RequiresViolation, build_nondet_StringErr1RequiresViolation, cstrpbrkErr3RequiresViolation, cstrpbrkErr1RequiresViolation, cstrpbrkErr9RequiresViolation, cstrpbrkErr7RequiresViolation, cstrpbrkErr2RequiresViolation, cstrpbrkErr8RequiresViolation, cstrpbrkErr4RequiresViolation, cstrpbrkErr0RequiresViolation, cstrpbrkErr6RequiresViolation, cstrpbrkErr5RequiresViolation, mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]===
[2018-02-02 09:46:23,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1764023598, now seen corresponding path program 1 times
[2018-02-02 09:46:23,555 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy
[2018-02-02 09:46:23,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-02-02 09:46:23,571 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs.
[2018-02-02 09:46:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-02-02 09:46:23,752 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-02-02 09:46:23,752 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14
[2018-02-02 09:46:23,752 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state
[2018-02-02 09:46:23,752 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-02-02 09:46:23,752 INFO L182 omatonBuilderFactory]: Interpolants [480#(and (<= 1 (select |#length| main_~s1~0.base)) (= 0 main_~s1~0.offset)), 481#(and (= 0 |cstrpbrk_#in~s1.offset|) (<= 1 (select |#length| |cstrpbrk_#in~s1.base|))), 482#(and (= cstrpbrk_~sc1~0.offset 0) (<= 1 (select |#length| cstrpbrk_~sc1~0.base))), 468#true, 469#false, 470#(<= 1 build_nondet_String_~length~0), 471#(and (<= 1 build_nondet_String_~length~0) (= build_nondet_String_~length~0 (select |#length| |build_nondet_String_#t~malloc1.base|)) (= 0 |build_nondet_String_#t~malloc1.offset|)), 472#(and (= 0 build_nondet_String_~nondetString~0.offset) (<= 1 build_nondet_String_~length~0) (= build_nondet_String_~length~0 (select |#length| build_nondet_String_~nondetString~0.base))), 473#(and (= 0 build_nondet_String_~nondetString~0.offset) (<= 1 (select |#length| build_nondet_String_~nondetString~0.base)) (= (select |#valid| build_nondet_String_~nondetString~0.base) 1)), 474#(and (<= 1 (select |#length| |build_nondet_String_#res.base|)) (= (select |#valid| |build_nondet_String_#res.base|) 1) (= 0 |build_nondet_String_#res.offset|)), 475#(and (= (select |#valid| |main_#t~ret11.base|) 1) (<= 1 (select |#length| |main_#t~ret11.base|)) (= 0 |main_#t~ret11.offset|)), 476#(and (<= 1 (select |#length| main_~s1~0.base)) (= 0 main_~s1~0.offset) (= (select |#valid| main_~s1~0.base) 1)), 477#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 478#(and (= (store |old(#length)| |build_nondet_String_#t~malloc1.base| (select |#length| |build_nondet_String_#t~malloc1.base|)) |#length|) (= 0 (select |old(#valid)| |build_nondet_String_#t~malloc1.base|))), 479#(and (or (= 0 (select |old(#valid)| (@diff |old(#length)| |#length|))) (= |old(#length)| |#length|)) (= |#length| (store |old(#length)| (@diff |old(#length)| |#length|) (select |#length| (@diff |old(#length)| |#length|)))))]
[2018-02-02 09:46:23,753 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-02-02 09:46:23,753 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states
[2018-02-02 09:46:23,753 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2018-02-02 09:46:23,753 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210
[2018-02-02 09:46:23,754 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 15 states.
[2018-02-02 09:46:24,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-02-02 09:46:24,147 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions.
[2018-02-02 09:46:24,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2018-02-02 09:46:24,148 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 29
[2018-02-02 09:46:24,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-02-02 09:46:24,150 INFO L225 Difference]: With dead ends: 80
[2018-02-02 09:46:24,150 INFO L226 Difference]: Without dead ends: 80
[2018-02-02 09:46:24,150 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552
[2018-02-02 09:46:24,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states.
[2018-02-02 09:46:24,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60.
[2018-02-02 09:46:24,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states.
[2018-02-02 09:46:24,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions.
[2018-02-02 09:46:24,155 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 29
[2018-02-02 09:46:24,155 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-02-02 09:46:24,156 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions.
[2018-02-02 09:46:24,156 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states.
[2018-02-02 09:46:24,156 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions.
[2018-02-02 09:46:24,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2018-02-02 09:46:24,157 INFO L343 BasicCegarLoop]: Found error trace
[2018-02-02 09:46:24,157 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-02-02 09:46:24,157 INFO L371 AbstractCegarLoop]: === Iteration 5 === [build_nondet_StringErr0RequiresViolation, build_nondet_StringErr1RequiresViolation, cstrpbrkErr3RequiresViolation, cstrpbrkErr1RequiresViolation, cstrpbrkErr9RequiresViolation, cstrpbrkErr7RequiresViolation, cstrpbrkErr2RequiresViolation, cstrpbrkErr8RequiresViolation, cstrpbrkErr4RequiresViolation, cstrpbrkErr0RequiresViolation, cstrpbrkErr6RequiresViolation, cstrpbrkErr5RequiresViolation, mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]===
[2018-02-02 09:46:24,157 INFO L82 PathProgramCache]: Analyzing trace with hash -464489331, now seen corresponding path program 1 times
[2018-02-02 09:46:24,158 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy
[2018-02-02 09:46:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-02-02 09:46:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-02-02 09:46:24,208 INFO L410 BasicCegarLoop]: Counterexample might be feasible
[2018-02-02 09:46:24,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 09:46:24 BoogieIcfgContainer
[2018-02-02 09:46:24,229 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-02-02 09:46:24,230 INFO L168 Benchmark]: Toolchain (without parser) took 2262.30 ms. Allocated memory was 406.3 MB in the beginning and 634.4 MB in the end (delta: 228.1 MB). Free memory was 363.0 MB in the beginning and 498.9 MB in the end (delta: -135.9 MB). Peak memory consumption was 92.2 MB. Max. memory is 5.3 GB.
[2018-02-02 09:46:24,230 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 406.3 MB. Free memory is still 369.6 MB. There was no memory consumed. Max. memory is 5.3 GB.
[2018-02-02 09:46:24,230 INFO L168 Benchmark]: CACSL2BoogieTranslator took 164.89 ms. Allocated memory is still 406.3 MB. Free memory was 363.0 MB in the beginning and 352.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 5.3 GB.
[2018-02-02 09:46:24,231 INFO L168 Benchmark]: Boogie Preprocessor took 29.82 ms. Allocated memory is still 406.3 MB. Free memory was 352.4 MB in the beginning and 351.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB.
[2018-02-02 09:46:24,231 INFO L168 Benchmark]: RCFGBuilder took 200.59 ms. Allocated memory is still 406.3 MB. Free memory was 351.0 MB in the beginning and 328.5 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 5.3 GB.
[2018-02-02 09:46:24,231 INFO L168 Benchmark]: TraceAbstraction took 1864.01 ms. Allocated memory was 406.3 MB in the beginning and 634.4 MB in the end (delta: 228.1 MB). Free memory was 328.5 MB in the beginning and 498.9 MB in the end (delta: -170.4 MB). Peak memory consumption was 57.7 MB. Max. memory is 5.3 GB.
[2018-02-02 09:46:24,232 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.15 ms. Allocated memory is still 406.3 MB. Free memory is still 369.6 MB. There was no memory consumed. Max. memory is 5.3 GB.
* CACSL2BoogieTranslator took 164.89 ms. Allocated memory is still 406.3 MB. Free memory was 363.0 MB in the beginning and 352.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 5.3 GB.
* Boogie Preprocessor took 29.82 ms. Allocated memory is still 406.3 MB. Free memory was 352.4 MB in the beginning and 351.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB.
* RCFGBuilder took 200.59 ms. Allocated memory is still 406.3 MB. Free memory was 351.0 MB in the beginning and 328.5 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 5.3 GB.
* TraceAbstraction took 1864.01 ms. Allocated memory was 406.3 MB in the beginning and 634.4 MB in the end (delta: 228.1 MB). Free memory was 328.5 MB in the beginning and 498.9 MB in the end (delta: -170.4 MB). Peak memory consumption was 57.7 MB. 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:
[L565] CALL, EXPR build_nondet_String()
[L541] int length = __VERIFIER_nondet_int();
[L542] COND TRUE length < 1
[L543] length = 1
VAL [length=1]
[L545] EXPR, FCALL malloc(length * sizeof(char))
VAL [length=1, malloc(length * sizeof(char))={3:0}]
[L545] char* nondetString = (char*) malloc(length * sizeof(char));
VAL [length=1, malloc(length * sizeof(char))={3:0}, nondetString={3:0}]
[L546] FCALL nondetString[length-1] = '\0'
VAL [length=1, malloc(length * sizeof(char))={3:0}, nondetString={3:0}]
[L547] RET return nondetString;
VAL [\result={3:0}, length=1, malloc(length * sizeof(char))={3:0}, nondetString={3:0}]
[L565] EXPR build_nondet_String()
VAL [build_nondet_String()={3:0}]
[L565] char* s1 = build_nondet_String();
[L566] CALL, EXPR build_nondet_String()
[L541] int length = __VERIFIER_nondet_int();
[L542] COND TRUE length < 1
[L543] length = 1
VAL [length=1]
[L545] EXPR, FCALL malloc(length * sizeof(char))
VAL [length=1, malloc(length * sizeof(char))={4:0}]
[L545] char* nondetString = (char*) malloc(length * sizeof(char));
VAL [length=1, malloc(length * sizeof(char))={4:0}, nondetString={4:0}]
[L546] FCALL nondetString[length-1] = '\0'
VAL [length=1, malloc(length * sizeof(char))={4:0}, nondetString={4:0}]
[L547] RET return nondetString;
VAL [\result={4:0}, length=1, malloc(length * sizeof(char))={4:0}, nondetString={4:0}]
[L566] EXPR build_nondet_String()
VAL [build_nondet_String()={4:0}, s1={3:0}]
[L566] char* s2 = build_nondet_String();
[L567] CALL cstrpbrk(s1,s2)
VAL [s1={3:0}, s2={4:0}]
[L551] const char *sc1;
[L552] const char *s;
[L553] int c;
[L554] sc1 = s1
VAL [s1={3:0}, s1={3:0}, s2={4:0}, s2={4:0}, sc1={3:0}]
[L554] EXPR, FCALL \read(*sc1)
VAL [\read(*sc1)=0, s1={3:0}, s1={3:0}, s2={4:0}, s2={4:0}, sc1={3:0}]
[L554] COND FALSE !(*sc1 != '\0')
[L562] RET return 0;
VAL [\result={0:0}, s1={3:0}, s1={3:0}, s2={4:0}, s2={4:0}, sc1={3:0}]
[L567] cstrpbrk(s1,s2)
VAL [cstrpbrk(s1,s2)={0:0}, s1={3:0}, s2={4:0}]
[L567] FCALL cstrpbrk(s1,s2)
VAL [cstrpbrk(s1,s2)={0:0}, s1={3:0}, s2={4:0}]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 65 locations, 19 error locations. UNSAFE Result, 1.8s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 196 SDtfs, 296 SDslu, 354 SDs, 0 SdLazy, 752 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 7/16 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, 4 MinimizatonAttempts, 20 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 13148 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 7/16 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrpbrk_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_09-46-24-237.csv
Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrpbrk_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_09-46-24-237.csv
Received shutdown request...