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/list-ext-properties/list-ext_flag_false-unreach-call_false-valid-deref.i
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This is Ultimate 0.1.23-1cceb4a
[2018-01-29 23:42:52,252 INFO L170 SettingsManager]: Resetting all preferences to default values...
[2018-01-29 23:42:52,254 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values
[2018-01-29 23:42:52,267 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-01-29 23:42:52,267 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-01-29 23:42:52,268 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-01-29 23:42:52,270 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2018-01-29 23:42:52,271 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values
[2018-01-29 23:42:52,273 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2018-01-29 23:42:52,274 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2018-01-29 23:42:52,275 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2018-01-29 23:42:52,275 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values
[2018-01-29 23:42:52,275 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-01-29 23:42:52,276 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-01-29 23:42:52,277 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-01-29 23:42:52,280 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-01-29 23:42:52,282 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values
[2018-01-29 23:42:52,284 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-01-29 23:42:52,285 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-01-29 23:42:52,286 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-01-29 23:42:52,288 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2018-01-29 23:42:52,289 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2018-01-29 23:42:52,289 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-01-29 23:42:52,290 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-01-29 23:42:52,291 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values
[2018-01-29 23:42:52,292 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2018-01-29 23:42:52,292 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values
[2018-01-29 23:42:52,293 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring...
[2018-01-29 23:42:52,293 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2018-01-29 23:42:52,293 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values
[2018-01-29 23:42:52,294 INFO L181 SettingsManager]: Finished resetting all preferences to default values...
[2018-01-29 23:42:52,294 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
[2018-01-29 23:42:52,304 INFO L110 SettingsManager]: Loading preferences was successful
[2018-01-29 23:42:52,304 INFO L112 SettingsManager]: Preferences different from defaults after loading the file:
[2018-01-29 23:42:52,305 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-01-29 23:42:52,305 INFO L133 SettingsManager]: * to procedures, called more than once=true
[2018-01-29 23:42:52,305 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2018-01-29 23:42:52,306 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain
[2018-01-29 23:42:52,306 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true
[2018-01-29 23:42:52,307 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-01-29 23:42:52,307 INFO L133 SettingsManager]: * sizeof long=4
[2018-01-29 23:42:52,307 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false
[2018-01-29 23:42:52,307 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true
[2018-01-29 23:42:52,307 INFO L133 SettingsManager]: * sizeof POINTER=4
[2018-01-29 23:42:52,307 INFO L133 SettingsManager]: * Check division by zero=IGNORE
[2018-01-29 23:42:52,308 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2018-01-29 23:42:52,308 INFO L133 SettingsManager]: * Bitprecise bitfields=true
[2018-01-29 23:42:52,308 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2018-01-29 23:42:52,308 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-01-29 23:42:52,309 INFO L133 SettingsManager]: * sizeof long double=12
[2018-01-29 23:42:52,309 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-01-29 23:42:52,309 INFO L133 SettingsManager]: * Size of a code block=SingleStatement
[2018-01-29 23:42:52,309 INFO L133 SettingsManager]: * To the following directory=./dump/
[2018-01-29 23:42:52,309 INFO L133 SettingsManager]: * Add additional assume for each assert=false
[2018-01-29 23:42:52,310 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode
[2018-01-29 23:42:52,310 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-01-29 23:42:52,310 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-01-29 23:42:52,310 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK
[2018-01-29 23:42:52,310 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2018-01-29 23:42:52,311 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-01-29 23:42:52,311 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL
[2018-01-29 23:42:52,311 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2018-01-29 23:42:52,311 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-01-29 23:42:52,311 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-01-29 23:42:52,312 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2018-01-29 23:42:52,312 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR
[2018-01-29 23:42:52,344 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2018-01-29 23:42:52,353 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized
[2018-01-29 23:42:52,355 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected.
[2018-01-29 23:42:52,357 INFO L271 PluginConnector]: Initializing CDTParser...
[2018-01-29 23:42:52,357 INFO L276 PluginConnector]: CDTParser initialized
[2018-01-29 23:42:52,358 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/list-ext_flag_false-unreach-call_false-valid-deref.i
[2018-01-29 23:42:52,520 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-01-29 23:42:52,528 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2018-01-29 23:42:52,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-01-29 23:42:52,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-01-29 23:42:52,537 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized
[2018-01-29 23:42:52,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 11:42:52" (1/1) ...
[2018-01-29 23:42:52,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be68e14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:42:52, skipping insertion in model container
[2018-01-29 23:42:52,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 11:42:52" (1/1) ...
[2018-01-29 23:42:52,561 INFO L153 Dispatcher]: Using SV-COMP mode
[2018-01-29 23:42:52,605 INFO L153 Dispatcher]: Using SV-COMP mode
[2018-01-29 23:42:52,723 INFO L450 PostProcessor]: Settings: Checked method=main
[2018-01-29 23:42:52,741 INFO L450 PostProcessor]: Settings: Checked method=main
[2018-01-29 23:42:52,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:42:52 WrapperNode
[2018-01-29 23:42:52,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-01-29 23:42:52,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-01-29 23:42:52,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2018-01-29 23:42:52,751 INFO L276 PluginConnector]: Boogie Preprocessor initialized
[2018-01-29 23:42:52,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:42:52" (1/1) ...
[2018-01-29 23:42:52,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:42:52" (1/1) ...
[2018-01-29 23:42:52,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:42:52" (1/1) ...
[2018-01-29 23:42:52,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:42:52" (1/1) ...
[2018-01-29 23:42:52,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:42:52" (1/1) ...
[2018-01-29 23:42:52,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:42:52" (1/1) ...
[2018-01-29 23:42:52,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:42:52" (1/1) ...
[2018-01-29 23:42:52,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-01-29 23:42:52,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-01-29 23:42:52,792 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2018-01-29 23:42:52,792 INFO L276 PluginConnector]: RCFGBuilder initialized
[2018-01-29 23:42:52,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:42:52" (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
[2018-01-29 23:42:52,845 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2018-01-29 23:42:52,845 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-01-29 23:42:52,845 INFO L136 BoogieDeclarations]: Found implementation of procedure exit
[2018-01-29 23:42:52,845 INFO L136 BoogieDeclarations]: Found implementation of procedure main
[2018-01-29 23:42:52,845 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2018-01-29 23:42:52,845 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2018-01-29 23:42:52,846 INFO L128 BoogieDeclarations]: Found specification of procedure write~int
[2018-01-29 23:42:52,846 INFO L128 BoogieDeclarations]: Found specification of procedure read~int
[2018-01-29 23:42:52,846 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free
[2018-01-29 23:42:52,846 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2018-01-29 23:42:52,846 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc
[2018-01-29 23:42:52,846 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2018-01-29 23:42:52,846 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2018-01-29 23:42:52,846 INFO L128 BoogieDeclarations]: Found specification of procedure malloc
[2018-01-29 23:42:52,846 INFO L128 BoogieDeclarations]: Found specification of procedure free
[2018-01-29 23:42:52,846 INFO L128 BoogieDeclarations]: Found specification of procedure exit
[2018-01-29 23:42:52,847 INFO L128 BoogieDeclarations]: Found specification of procedure main
[2018-01-29 23:42:52,847 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2018-01-29 23:42:52,847 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-01-29 23:42:53,259 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-01-29 23:42:53,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 11:42:53 BoogieIcfgContainer
[2018-01-29 23:42:53,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-01-29 23:42:53,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-01-29 23:42:53,261 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2018-01-29 23:42:53,263 INFO L276 PluginConnector]: TraceAbstraction initialized
[2018-01-29 23:42:53,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 11:42:52" (1/3) ...
[2018-01-29 23:42:53,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42307093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 11:42:53, skipping insertion in model container
[2018-01-29 23:42:53,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:42:52" (2/3) ...
[2018-01-29 23:42:53,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42307093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 11:42:53, skipping insertion in model container
[2018-01-29 23:42:53,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 11:42:53" (3/3) ...
[2018-01-29 23:42:53,266 INFO L107 eAbstractionObserver]: Analyzing ICFG list-ext_flag_false-unreach-call_false-valid-deref.i
[2018-01-29 23:42:53,273 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-01-29 23:42:53,279 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 35 error locations.
[2018-01-29 23:42:53,319 INFO L322 AbstractCegarLoop]: Interprodecural is true
[2018-01-29 23:42:53,319 INFO L323 AbstractCegarLoop]: Hoare is true
[2018-01-29 23:42:53,319 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-01-29 23:42:53,319 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK
[2018-01-29 23:42:53,319 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-01-29 23:42:53,319 INFO L327 AbstractCegarLoop]: Difference is false
[2018-01-29 23:42:53,319 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-01-29 23:42:53,319 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-01-29 23:42:53,320 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure
[2018-01-29 23:42:53,338 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states.
[2018-01-29 23:42:53,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2018-01-29 23:42:53,345 INFO L342 BasicCegarLoop]: Found error trace
[2018-01-29 23:42:53,346 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-01-29 23:42:53,347 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr34EnsuresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]===
[2018-01-29 23:42:53,350 INFO L82 PathProgramCache]: Analyzing trace with hash -2079417659, now seen corresponding path program 1 times
[2018-01-29 23:42:53,352 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-01-29 23:42:53,352 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-01-29 23:42:53,394 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-29 23:42:53,395 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-01-29 23:42:53,395 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-29 23:42:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-01-29 23:42:53,443 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs.
[2018-01-29 23:42:53,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-01-29 23:42:53,477 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-01-29 23:42:53,478 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-01-29 23:42:53,479 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states
[2018-01-29 23:42:53,489 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2018-01-29 23:42:53,490 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2018-01-29 23:42:53,491 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 2 states.
[2018-01-29 23:42:53,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-01-29 23:42:53,608 INFO L93 Difference]: Finished difference Result 199 states and 218 transitions.
[2018-01-29 23:42:53,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2018-01-29 23:42:53,609 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16
[2018-01-29 23:42:53,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-01-29 23:42:53,618 INFO L225 Difference]: With dead ends: 199
[2018-01-29 23:42:53,618 INFO L226 Difference]: Without dead ends: 118
[2018-01-29 23:42:53,622 INFO L553 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
[2018-01-29 23:42:53,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states.
[2018-01-29 23:42:53,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118.
[2018-01-29 23:42:53,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states.
[2018-01-29 23:42:53,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions.
[2018-01-29 23:42:53,660 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 16
[2018-01-29 23:42:53,661 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-01-29 23:42:53,661 INFO L432 AbstractCegarLoop]: Abstraction has 118 states and 123 transitions.
[2018-01-29 23:42:53,661 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2018-01-29 23:42:53,661 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 123 transitions.
[2018-01-29 23:42:53,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2018-01-29 23:42:53,662 INFO L342 BasicCegarLoop]: Found error trace
[2018-01-29 23:42:53,662 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-01-29 23:42:53,662 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr34EnsuresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]===
[2018-01-29 23:42:53,662 INFO L82 PathProgramCache]: Analyzing trace with hash 2127174250, now seen corresponding path program 1 times
[2018-01-29 23:42:53,663 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-01-29 23:42:53,663 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-01-29 23:42:53,664 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-29 23:42:53,664 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-01-29 23:42:53,664 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-29 23:42:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-01-29 23:42:53,680 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs.
[2018-01-29 23:42:53,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-01-29 23:42:53,750 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-01-29 23:42:53,751 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-01-29 23:42:53,752 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-01-29 23:42:53,753 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-01-29 23:42:53,753 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2018-01-29 23:42:53,753 INFO L87 Difference]: Start difference. First operand 118 states and 123 transitions. Second operand 4 states.
[2018-01-29 23:42:53,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-01-29 23:42:53,867 INFO L93 Difference]: Finished difference Result 296 states and 310 transitions.
[2018-01-29 23:42:53,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2018-01-29 23:42:53,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21
[2018-01-29 23:42:53,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-01-29 23:42:53,870 INFO L225 Difference]: With dead ends: 296
[2018-01-29 23:42:53,871 INFO L226 Difference]: Without dead ends: 192
[2018-01-29 23:42:53,872 INFO L553 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
[2018-01-29 23:42:53,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states.
[2018-01-29 23:42:53,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 121.
[2018-01-29 23:42:53,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states.
[2018-01-29 23:42:53,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 126 transitions.
[2018-01-29 23:42:53,881 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 126 transitions. Word has length 21
[2018-01-29 23:42:53,881 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-01-29 23:42:53,882 INFO L432 AbstractCegarLoop]: Abstraction has 121 states and 126 transitions.
[2018-01-29 23:42:53,882 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-01-29 23:42:53,882 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 126 transitions.
[2018-01-29 23:42:53,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2018-01-29 23:42:53,882 INFO L342 BasicCegarLoop]: Found error trace
[2018-01-29 23:42:53,883 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-01-29 23:42:53,883 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr34EnsuresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]===
[2018-01-29 23:42:53,883 INFO L82 PathProgramCache]: Analyzing trace with hash 347996743, now seen corresponding path program 1 times
[2018-01-29 23:42:53,883 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-01-29 23:42:53,883 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-01-29 23:42:53,884 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-29 23:42:53,884 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-01-29 23:42:53,884 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-29 23:42:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-01-29 23:42:53,901 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs.
[2018-01-29 23:42:53,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-01-29 23:42:53,954 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-01-29 23:42:53,955 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-01-29 23:42:53,955 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-01-29 23:42:53,955 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-01-29 23:42:53,955 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2018-01-29 23:42:53,956 INFO L87 Difference]: Start difference. First operand 121 states and 126 transitions. Second operand 5 states.
[2018-01-29 23:42:54,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-01-29 23:42:54,145 INFO L93 Difference]: Finished difference Result 157 states and 167 transitions.
[2018-01-29 23:42:54,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2018-01-29 23:42:54,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23
[2018-01-29 23:42:54,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-01-29 23:42:54,147 INFO L225 Difference]: With dead ends: 157
[2018-01-29 23:42:54,147 INFO L226 Difference]: Without dead ends: 140
[2018-01-29 23:42:54,148 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2018-01-29 23:42:54,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states.
[2018-01-29 23:42:54,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 125.
[2018-01-29 23:42:54,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states.
[2018-01-29 23:42:54,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 135 transitions.
[2018-01-29 23:42:54,159 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 135 transitions. Word has length 23
[2018-01-29 23:42:54,160 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-01-29 23:42:54,160 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 135 transitions.
[2018-01-29 23:42:54,160 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-01-29 23:42:54,160 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 135 transitions.
[2018-01-29 23:42:54,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2018-01-29 23:42:54,161 INFO L342 BasicCegarLoop]: Found error trace
[2018-01-29 23:42:54,161 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-01-29 23:42:54,161 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr34EnsuresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]===
[2018-01-29 23:42:54,161 INFO L82 PathProgramCache]: Analyzing trace with hash 347996744, now seen corresponding path program 1 times
[2018-01-29 23:42:54,162 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-01-29 23:42:54,162 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-01-29 23:42:54,163 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-29 23:42:54,163 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-01-29 23:42:54,163 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-29 23:42:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-01-29 23:42:54,179 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs.
[2018-01-29 23:42:54,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-01-29 23:42:54,279 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-01-29 23:42:54,279 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-01-29 23:42:54,280 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-01-29 23:42:54,280 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-01-29 23:42:54,280 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2018-01-29 23:42:54,280 INFO L87 Difference]: Start difference. First operand 125 states and 135 transitions. Second operand 5 states.
[2018-01-29 23:42:54,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-01-29 23:42:54,492 INFO L93 Difference]: Finished difference Result 187 states and 196 transitions.
[2018-01-29 23:42:54,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2018-01-29 23:42:54,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23
[2018-01-29 23:42:54,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-01-29 23:42:54,495 INFO L225 Difference]: With dead ends: 187
[2018-01-29 23:42:54,495 INFO L226 Difference]: Without dead ends: 170
[2018-01-29 23:42:54,495 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2018-01-29 23:42:54,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states.
[2018-01-29 23:42:54,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 160.
[2018-01-29 23:42:54,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states.
[2018-01-29 23:42:54,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 170 transitions.
[2018-01-29 23:42:54,511 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 170 transitions. Word has length 23
[2018-01-29 23:42:54,512 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-01-29 23:42:54,512 INFO L432 AbstractCegarLoop]: Abstraction has 160 states and 170 transitions.
[2018-01-29 23:42:54,512 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-01-29 23:42:54,512 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 170 transitions.
[2018-01-29 23:42:54,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2018-01-29 23:42:54,514 INFO L342 BasicCegarLoop]: Found error trace
[2018-01-29 23:42:54,514 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-01-29 23:42:54,514 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr34EnsuresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]===
[2018-01-29 23:42:54,515 INFO L82 PathProgramCache]: Analyzing trace with hash -301132870, now seen corresponding path program 1 times
[2018-01-29 23:42:54,515 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-01-29 23:42:54,515 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-01-29 23:42:54,516 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-29 23:42:54,516 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-01-29 23:42:54,516 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-29 23:42:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-01-29 23:42:54,542 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs.
[2018-01-29 23:42:54,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-01-29 23:42:54,673 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-01-29 23:42:54,674 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2018-01-29 23:42:54,674 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-01-29 23:42:54,674 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-01-29 23:42:54,674 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2018-01-29 23:42:54,675 INFO L87 Difference]: Start difference. First operand 160 states and 170 transitions. Second operand 6 states.
[2018-01-29 23:42:54,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-01-29 23:42:54,941 INFO L93 Difference]: Finished difference Result 243 states and 258 transitions.
[2018-01-29 23:42:54,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2018-01-29 23:42:54,942 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39
[2018-01-29 23:42:54,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-01-29 23:42:54,943 INFO L225 Difference]: With dead ends: 243
[2018-01-29 23:42:54,943 INFO L226 Difference]: Without dead ends: 238
[2018-01-29 23:42:54,944 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90
[2018-01-29 23:42:54,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states.
[2018-01-29 23:42:54,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 206.
[2018-01-29 23:42:54,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states.
[2018-01-29 23:42:54,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 227 transitions.
[2018-01-29 23:42:54,960 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 227 transitions. Word has length 39
[2018-01-29 23:42:54,960 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-01-29 23:42:54,960 INFO L432 AbstractCegarLoop]: Abstraction has 206 states and 227 transitions.
[2018-01-29 23:42:54,960 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-01-29 23:42:54,960 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 227 transitions.
[2018-01-29 23:42:54,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2018-01-29 23:42:54,962 INFO L342 BasicCegarLoop]: Found error trace
[2018-01-29 23:42:54,962 INFO L350 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-01-29 23:42:54,962 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr34EnsuresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]===
[2018-01-29 23:42:54,962 INFO L82 PathProgramCache]: Analyzing trace with hash -2111474610, now seen corresponding path program 1 times
[2018-01-29 23:42:54,962 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-01-29 23:42:54,963 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-01-29 23:42:54,963 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-29 23:42:54,963 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-01-29 23:42:54,963 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-29 23:42:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-01-29 23:42:54,978 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs.
[2018-01-29 23:42:55,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-01-29 23:42:55,045 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-01-29 23:42:55,045 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2018-01-29 23:42:55,046 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-01-29 23:42:55,046 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-01-29 23:42:55,046 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2018-01-29 23:42:55,046 INFO L87 Difference]: Start difference. First operand 206 states and 227 transitions. Second operand 6 states.
[2018-01-29 23:42:55,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-01-29 23:42:55,201 INFO L93 Difference]: Finished difference Result 277 states and 290 transitions.
[2018-01-29 23:42:55,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2018-01-29 23:42:55,201 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42
[2018-01-29 23:42:55,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-01-29 23:42:55,203 INFO L225 Difference]: With dead ends: 277
[2018-01-29 23:42:55,203 INFO L226 Difference]: Without dead ends: 206
[2018-01-29 23:42:55,204 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2018-01-29 23:42:55,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states.
[2018-01-29 23:42:55,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 172.
[2018-01-29 23:42:55,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states.
[2018-01-29 23:42:55,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 182 transitions.
[2018-01-29 23:42:55,216 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 182 transitions. Word has length 42
[2018-01-29 23:42:55,216 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-01-29 23:42:55,216 INFO L432 AbstractCegarLoop]: Abstraction has 172 states and 182 transitions.
[2018-01-29 23:42:55,216 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-01-29 23:42:55,216 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 182 transitions.
[2018-01-29 23:42:55,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2018-01-29 23:42:55,218 INFO L342 BasicCegarLoop]: Found error trace
[2018-01-29 23:42:55,218 INFO L350 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-01-29 23:42:55,218 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr34EnsuresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]===
[2018-01-29 23:42:55,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1707014286, now seen corresponding path program 1 times
[2018-01-29 23:42:55,218 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-01-29 23:42:55,218 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-01-29 23:42:55,219 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-29 23:42:55,219 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-01-29 23:42:55,219 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-01-29 23:42:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-01-29 23:42:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-01-29 23:42:55,269 INFO L409 BasicCegarLoop]: Counterexample might be feasible
[2018-01-29 23:42:55,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.01 11:42:55 BoogieIcfgContainer
[2018-01-29 23:42:55,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-01-29 23:42:55,306 INFO L168 Benchmark]: Toolchain (without parser) took 2785.30 ms. Allocated memory was 304.6 MB in the beginning and 479.7 MB in the end (delta: 175.1 MB). Free memory was 264.6 MB in the beginning and 376.5 MB in the end (delta: -111.9 MB). Peak memory consumption was 63.3 MB. Max. memory is 5.3 GB.
[2018-01-29 23:42:55,307 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 304.6 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 5.3 GB.
[2018-01-29 23:42:55,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.15 ms. Allocated memory is still 304.6 MB. Free memory was 263.6 MB in the beginning and 252.5 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 5.3 GB.
[2018-01-29 23:42:55,307 INFO L168 Benchmark]: Boogie Preprocessor took 41.16 ms. Allocated memory is still 304.6 MB. Free memory was 252.5 MB in the beginning and 250.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB.
[2018-01-29 23:42:55,308 INFO L168 Benchmark]: RCFGBuilder took 467.72 ms. Allocated memory is still 304.6 MB. Free memory was 250.5 MB in the beginning and 220.9 MB in the end (delta: 29.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 5.3 GB.
[2018-01-29 23:42:55,308 INFO L168 Benchmark]: TraceAbstraction took 2044.86 ms. Allocated memory was 304.6 MB in the beginning and 479.7 MB in the end (delta: 175.1 MB). Free memory was 220.9 MB in the beginning and 376.5 MB in the end (delta: -155.6 MB). Peak memory consumption was 19.5 MB. Max. memory is 5.3 GB.
[2018-01-29 23:42:55,309 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 304.6 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 5.3 GB.
* CACSL2BoogieTranslator took 221.15 ms. Allocated memory is still 304.6 MB. Free memory was 263.6 MB in the beginning and 252.5 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 5.3 GB.
* Boogie Preprocessor took 41.16 ms. Allocated memory is still 304.6 MB. Free memory was 252.5 MB in the beginning and 250.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB.
* RCFGBuilder took 467.72 ms. Allocated memory is still 304.6 MB. Free memory was 250.5 MB in the beginning and 220.9 MB in the end (delta: 29.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 5.3 GB.
* TraceAbstraction took 2044.86 ms. Allocated memory was 304.6 MB in the beginning and 479.7 MB in the end (delta: 175.1 MB). Free memory was 220.9 MB in the beginning and 376.5 MB in the end (delta: -155.6 MB). Peak memory consumption was 19.5 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:
[L628] List p, a, t;
[L629] EXPR, FCALL malloc(sizeof(struct node))
VAL [malloc(sizeof(struct node))={17:0}]
[L629] a = (List) malloc(sizeof(struct node))
VAL [a={17:0}, malloc(sizeof(struct node))={17:0}]
[L630] COND FALSE !(a == 0)
VAL [a={17:0}, malloc(sizeof(struct node))={17:0}]
[L631] p = a
VAL [a={17:0}, malloc(sizeof(struct node))={17:0}, p={17:0}]
[L632] int i = 0;
VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={17:0}]
[L633] i < 20 && __VERIFIER_nondet_int()
VAL [a={17:0}, i=0, i < 20 && __VERIFIER_nondet_int()=1, malloc(sizeof(struct node))={17:0}, p={17:0}]
[L633] i < 20 && __VERIFIER_nondet_int()
VAL [__VERIFIER_nondet_int()=0, a={17:0}, i=0, i < 20 && __VERIFIER_nondet_int()=0, malloc(sizeof(struct node))={17:0}, p={17:0}]
[L633] COND FALSE !(i < 20 && __VERIFIER_nondet_int())
VAL [__VERIFIER_nondet_int()=0, a={17:0}, i=0, i < 20 && __VERIFIER_nondet_int()=0, malloc(sizeof(struct node))={17:0}, p={17:0}]
[L646] FCALL p->h = 3
VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={17:0}]
[L647] p = a
VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={17:0}]
[L648] EXPR, FCALL p->h
VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={17:0}, p->h=3]
[L648] COND FALSE !(p->h != 3)
VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={17:0}, p->h=3]
[L659] EXPR, FCALL p->h
VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={17:0}, p->h=3]
[L659] COND FALSE !(p->h != 3 || i > 20)
VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={17:0}, p->h=3]
[L661] p = a
VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={17:0}]
[L662] EXPR, FCALL p->n
VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={17:0}, p->n={20:15}]
[L662] COND TRUE p->n != 0
VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={17:0}, p->n={20:15}]
[L663] EXPR, FCALL p->n
VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={17:0}, p->n={20:15}]
[L663] t = p->n
VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={17:0}, p->n={20:15}, t={20:15}]
[L664] FCALL free(p)
VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={17:0}, t={20:15}]
[L665] p = t
VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={20:15}, t={20:15}]
[L662] FCALL p->n
VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={20:15}, t={20:15}]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 131 locations, 35 error locations. UNSAFE Result, 1.9s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 583 SDtfs, 1147 SDslu, 890 SDs, 0 SdLazy, 493 SolverSat, 87 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=206occurred in iteration=5, 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, 6 MinimizatonAttempts, 162 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 207 NumberOfCodeBlocks, 207 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 22718 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 2/2 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/list-ext_flag_false-unreach-call_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-29_23-42-55-316.csv
Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/list-ext_flag_false-unreach-call_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-29_23-42-55-316.csv
Received shutdown request...