/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c


--------------------------------------------------------------------------------


This is Ultimate 0.1.25-c90d42b
[2020-09-24 14:57:17,313 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 14:57:17,317 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 14:57:17,342 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 14:57:17,343 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 14:57:17,344 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 14:57:17,346 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 14:57:17,347 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 14:57:17,349 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 14:57:17,350 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 14:57:17,351 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 14:57:17,353 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 14:57:17,353 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 14:57:17,354 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 14:57:17,355 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 14:57:17,358 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 14:57:17,359 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 14:57:17,360 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 14:57:17,364 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 14:57:17,366 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 14:57:17,371 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 14:57:17,372 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 14:57:17,374 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 14:57:17,376 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 14:57:17,380 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 14:57:17,380 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 14:57:17,380 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 14:57:17,381 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 14:57:17,383 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 14:57:17,385 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 14:57:17,385 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 14:57:17,386 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 14:57:17,387 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 14:57:17,388 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 14:57:17,389 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 14:57:17,389 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 14:57:17,390 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 14:57:17,390 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 14:57:17,391 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 14:57:17,392 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 14:57:17,393 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 14:57:17,394 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-09-24 14:57:17,454 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 14:57:17,454 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 14:57:17,456 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 14:57:17,457 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 14:57:17,457 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 14:57:17,457 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 14:57:17,458 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 14:57:17,458 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 14:57:17,458 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 14:57:17,458 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 14:57:17,458 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 14:57:17,459 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 14:57:17,459 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 14:57:17,459 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 14:57:17,459 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 14:57:17,459 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 14:57:17,459 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 14:57:17,461 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 14:57:17,461 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 14:57:17,461 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 14:57:17,461 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 14:57:17,462 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 14:57:17,462 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 14:57:17,462 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 14:57:17,462 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 14:57:17,462 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 14:57:17,463 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 14:57:17,463 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 14:57:17,463 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 14:57:17,463 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false
[2020-09-24 14:57:17,942 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 14:57:17,957 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 14:57:17,961 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 14:57:17,962 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 14:57:17,963 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 14:57:17,964 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c
[2020-09-24 14:57:18,041 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06f80a62d/3d5757562b884fd491af39724851a1f2/FLAGd168c0b4a
[2020-09-24 14:57:18,592 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 14:57:18,593 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c
[2020-09-24 14:57:18,603 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06f80a62d/3d5757562b884fd491af39724851a1f2/FLAGd168c0b4a
[2020-09-24 14:57:18,930 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06f80a62d/3d5757562b884fd491af39724851a1f2
[2020-09-24 14:57:18,942 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 14:57:18,948 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 14:57:18,949 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 14:57:18,949 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 14:57:18,953 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 14:57:18,954 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:57:18" (1/1) ...
[2020-09-24 14:57:18,959 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@171e6c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:18, skipping insertion in model container
[2020-09-24 14:57:18,959 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:57:18" (1/1) ...
[2020-09-24 14:57:18,968 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 14:57:19,002 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 14:57:19,220 WARN  L1484              CHandler]: Possible shadowing of function min
[2020-09-24 14:57:19,222 WARN  L1484              CHandler]: Possible shadowing of function min
[2020-09-24 14:57:19,244 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 14:57:19,261 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 14:57:19,365 WARN  L1484              CHandler]: Possible shadowing of function min
[2020-09-24 14:57:19,367 WARN  L1484              CHandler]: Possible shadowing of function min
[2020-09-24 14:57:19,378 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 14:57:19,404 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 14:57:19,405 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:19 WrapperNode
[2020-09-24 14:57:19,405 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 14:57:19,406 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 14:57:19,406 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 14:57:19,406 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 14:57:19,424 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:19" (1/1) ...
[2020-09-24 14:57:19,424 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:19" (1/1) ...
[2020-09-24 14:57:19,439 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:19" (1/1) ...
[2020-09-24 14:57:19,440 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:19" (1/1) ...
[2020-09-24 14:57:19,458 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:19" (1/1) ...
[2020-09-24 14:57:19,465 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:19" (1/1) ...
[2020-09-24 14:57:19,467 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:19" (1/1) ...
[2020-09-24 14:57:19,472 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 14:57:19,473 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 14:57:19,473 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 14:57:19,473 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 14:57:19,474 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:19" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/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
[2020-09-24 14:57:19,548 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 14:57:19,548 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 14:57:19,549 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-09-24 14:57:19,549 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-24 14:57:19,549 INFO  L138     BoogieDeclarations]: Found implementation of procedure nondet_tree
[2020-09-24 14:57:19,549 INFO  L138     BoogieDeclarations]: Found implementation of procedure min
[2020-09-24 14:57:19,549 INFO  L138     BoogieDeclarations]: Found implementation of procedure tree_del
[2020-09-24 14:57:19,550 INFO  L138     BoogieDeclarations]: Found implementation of procedure tree_inorder
[2020-09-24 14:57:19,550 INFO  L138     BoogieDeclarations]: Found implementation of procedure size
[2020-09-24 14:57:19,550 INFO  L138     BoogieDeclarations]: Found implementation of procedure task
[2020-09-24 14:57:19,550 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 14:57:19,552 INFO  L138     BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit
[2020-09-24 14:57:19,552 INFO  L130     BoogieDeclarations]: Found specification of procedure calloc
[2020-09-24 14:57:19,552 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-09-24 14:57:19,552 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-09-24 14:57:19,552 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 14:57:19,553 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2020-09-24 14:57:19,553 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-09-24 14:57:19,553 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-09-24 14:57:19,553 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 14:57:19,553 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-24 14:57:19,554 INFO  L130     BoogieDeclarations]: Found specification of procedure nondet_tree
[2020-09-24 14:57:19,554 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-24 14:57:19,554 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 14:57:19,554 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-24 14:57:19,554 INFO  L130     BoogieDeclarations]: Found specification of procedure min
[2020-09-24 14:57:19,555 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-24 14:57:19,555 INFO  L130     BoogieDeclarations]: Found specification of procedure tree_del
[2020-09-24 14:57:19,555 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 14:57:19,555 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 14:57:19,555 INFO  L130     BoogieDeclarations]: Found specification of procedure tree_inorder
[2020-09-24 14:57:19,555 INFO  L130     BoogieDeclarations]: Found specification of procedure size
[2020-09-24 14:57:19,556 INFO  L130     BoogieDeclarations]: Found specification of procedure task
[2020-09-24 14:57:19,556 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 14:57:19,556 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.meminit
[2020-09-24 14:57:19,556 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 14:57:19,556 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 14:57:19,556 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 14:57:20,152 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 14:57:20,153 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-24 14:57:20,168 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:57:20 BoogieIcfgContainer
[2020-09-24 14:57:20,168 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 14:57:20,170 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 14:57:20,171 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 14:57:20,175 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 14:57:20,175 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:57:18" (1/3) ...
[2020-09-24 14:57:20,176 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385bbe3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:57:20, skipping insertion in model container
[2020-09-24 14:57:20,177 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:19" (2/3) ...
[2020-09-24 14:57:20,177 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385bbe3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:57:20, skipping insertion in model container
[2020-09-24 14:57:20,177 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:57:20" (3/3) ...
[2020-09-24 14:57:20,181 INFO  L109   eAbstractionObserver]: Analyzing ICFG tree_del_rec_incorrect.c
[2020-09-24 14:57:20,193 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 14:57:20,206 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 14:57:20,227 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 14:57:20,256 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 14:57:20,256 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 14:57:20,256 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 14:57:20,256 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 14:57:20,257 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 14:57:20,257 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 14:57:20,257 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 14:57:20,257 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 14:57:20,284 INFO  L276                IsEmpty]: Start isEmpty. Operand 183 states.
[2020-09-24 14:57:20,297 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2020-09-24 14:57:20,297 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 14:57:20,298 INFO  L422         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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 14:57:20,298 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 14:57:20,305 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 14:57:20,306 INFO  L82        PathProgramCache]: Analyzing trace with hash 1242734485, now seen corresponding path program 1 times
[2020-09-24 14:57:20,315 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 14:57:20,316 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912682271]
[2020-09-24 14:57:20,316 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 14:57:20,497 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:20,624 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 14:57:20,627 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:20,653 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 14:57:20,656 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:20,662 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-09-24 14:57:20,663 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:20,668 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2020-09-24 14:57:20,671 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:20,692 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34
[2020-09-24 14:57:20,695 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:20,739 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2020-09-24 14:57:20,742 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:20,768 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-09-24 14:57:20,772 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:20,792 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 14:57:20,793 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912682271]
[2020-09-24 14:57:20,795 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 14:57:20,796 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2020-09-24 14:57:20,797 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180585615]
[2020-09-24 14:57:20,803 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-09-24 14:57:20,803 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 14:57:20,821 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-09-24 14:57:20,822 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110
[2020-09-24 14:57:20,825 INFO  L87              Difference]: Start difference. First operand 183 states. Second operand 11 states.
[2020-09-24 14:57:22,086 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 14:57:22,087 INFO  L93              Difference]: Finished difference Result 324 states and 379 transitions.
[2020-09-24 14:57:22,088 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-09-24 14:57:22,090 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 60
[2020-09-24 14:57:22,091 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 14:57:22,117 INFO  L225             Difference]: With dead ends: 324
[2020-09-24 14:57:22,117 INFO  L226             Difference]: Without dead ends: 188
[2020-09-24 14:57:22,124 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306
[2020-09-24 14:57:22,143 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 188 states.
[2020-09-24 14:57:22,190 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 175.
[2020-09-24 14:57:22,192 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 175 states.
[2020-09-24 14:57:22,195 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 198 transitions.
[2020-09-24 14:57:22,197 INFO  L78                 Accepts]: Start accepts. Automaton has 175 states and 198 transitions. Word has length 60
[2020-09-24 14:57:22,198 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 14:57:22,198 INFO  L479      AbstractCegarLoop]: Abstraction has 175 states and 198 transitions.
[2020-09-24 14:57:22,198 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-09-24 14:57:22,198 INFO  L276                IsEmpty]: Start isEmpty. Operand 175 states and 198 transitions.
[2020-09-24 14:57:22,203 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 81
[2020-09-24 14:57:22,204 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 14:57:22,204 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 14:57:22,204 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 14:57:22,205 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 14:57:22,205 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 14:57:22,205 INFO  L82        PathProgramCache]: Analyzing trace with hash -1686429873, now seen corresponding path program 1 times
[2020-09-24 14:57:22,205 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 14:57:22,206 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986475027]
[2020-09-24 14:57:22,206 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 14:57:22,256 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:22,334 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 14:57:22,336 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:22,355 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 14:57:22,361 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:22,399 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-09-24 14:57:22,403 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:22,415 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2020-09-24 14:57:22,427 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:22,502 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 14:57:22,505 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:22,510 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-09-24 14:57:22,515 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:22,523 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54
[2020-09-24 14:57:22,525 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:22,552 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60
[2020-09-24 14:57:22,555 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:22,576 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2020-09-24 14:57:22,578 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:22,592 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2020-09-24 14:57:22,592 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986475027]
[2020-09-24 14:57:22,593 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 14:57:22,593 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12
[2020-09-24 14:57:22,593 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899609150]
[2020-09-24 14:57:22,595 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-09-24 14:57:22,595 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 14:57:22,596 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-09-24 14:57:22,596 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132
[2020-09-24 14:57:22,596 INFO  L87              Difference]: Start difference. First operand 175 states and 198 transitions. Second operand 12 states.
[2020-09-24 14:57:23,965 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 14:57:23,965 INFO  L93              Difference]: Finished difference Result 316 states and 361 transitions.
[2020-09-24 14:57:23,966 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-09-24 14:57:23,966 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 80
[2020-09-24 14:57:23,967 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 14:57:23,976 INFO  L225             Difference]: With dead ends: 316
[2020-09-24 14:57:23,976 INFO  L226             Difference]: Without dead ends: 187
[2020-09-24 14:57:23,983 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380
[2020-09-24 14:57:23,988 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 187 states.
[2020-09-24 14:57:24,026 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 177.
[2020-09-24 14:57:24,026 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 177 states.
[2020-09-24 14:57:24,029 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 201 transitions.
[2020-09-24 14:57:24,029 INFO  L78                 Accepts]: Start accepts. Automaton has 177 states and 201 transitions. Word has length 80
[2020-09-24 14:57:24,029 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 14:57:24,029 INFO  L479      AbstractCegarLoop]: Abstraction has 177 states and 201 transitions.
[2020-09-24 14:57:24,030 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-09-24 14:57:24,030 INFO  L276                IsEmpty]: Start isEmpty. Operand 177 states and 201 transitions.
[2020-09-24 14:57:24,032 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 102
[2020-09-24 14:57:24,033 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 14:57:24,033 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 14:57:24,033 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 14:57:24,033 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 14:57:24,034 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 14:57:24,034 INFO  L82        PathProgramCache]: Analyzing trace with hash 96122912, now seen corresponding path program 1 times
[2020-09-24 14:57:24,034 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 14:57:24,034 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502184364]
[2020-09-24 14:57:24,035 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 14:57:24,061 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:24,115 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 14:57:24,116 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:24,134 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 14:57:24,147 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:24,219 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 14:57:24,222 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:24,226 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-09-24 14:57:24,229 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:24,234 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2020-09-24 14:57:24,236 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:24,264 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46
[2020-09-24 14:57:24,267 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:24,273 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 14:57:24,274 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:24,277 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-09-24 14:57:24,277 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:24,293 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75
[2020-09-24 14:57:24,294 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:24,310 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81
[2020-09-24 14:57:24,311 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:24,333 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 14:57:24,335 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:24,349 INFO  L134       CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked.
[2020-09-24 14:57:24,349 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502184364]
[2020-09-24 14:57:24,349 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 14:57:24,349 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2020-09-24 14:57:24,350 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502672932]
[2020-09-24 14:57:24,350 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-09-24 14:57:24,351 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 14:57:24,351 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-09-24 14:57:24,351 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182
[2020-09-24 14:57:24,351 INFO  L87              Difference]: Start difference. First operand 177 states and 201 transitions. Second operand 14 states.
[2020-09-24 14:57:25,717 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 14:57:25,717 INFO  L93              Difference]: Finished difference Result 315 states and 360 transitions.
[2020-09-24 14:57:25,717 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2020-09-24 14:57:25,718 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states. Word has length 101
[2020-09-24 14:57:25,718 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 14:57:25,723 INFO  L225             Difference]: With dead ends: 315
[2020-09-24 14:57:25,724 INFO  L226             Difference]: Without dead ends: 189
[2020-09-24 14:57:25,726 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600
[2020-09-24 14:57:25,726 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 189 states.
[2020-09-24 14:57:25,766 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 179.
[2020-09-24 14:57:25,766 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 179 states.
[2020-09-24 14:57:25,769 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 204 transitions.
[2020-09-24 14:57:25,769 INFO  L78                 Accepts]: Start accepts. Automaton has 179 states and 204 transitions. Word has length 101
[2020-09-24 14:57:25,770 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 14:57:25,770 INFO  L479      AbstractCegarLoop]: Abstraction has 179 states and 204 transitions.
[2020-09-24 14:57:25,770 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-09-24 14:57:25,770 INFO  L276                IsEmpty]: Start isEmpty. Operand 179 states and 204 transitions.
[2020-09-24 14:57:25,773 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 125
[2020-09-24 14:57:25,774 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 14:57:25,774 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 14:57:25,774 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 14:57:25,775 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 14:57:25,775 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 14:57:25,775 INFO  L82        PathProgramCache]: Analyzing trace with hash -646256580, now seen corresponding path program 1 times
[2020-09-24 14:57:25,776 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 14:57:25,776 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922061861]
[2020-09-24 14:57:25,776 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 14:57:25,841 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:25,941 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 14:57:25,942 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:25,965 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 14:57:25,974 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:26,025 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 14:57:26,027 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:26,032 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-09-24 14:57:26,035 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:26,040 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2020-09-24 14:57:26,047 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:26,094 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 14:57:26,096 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:26,099 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2020-09-24 14:57:26,101 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:26,105 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69
[2020-09-24 14:57:26,115 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:26,141 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 14:57:26,144 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:26,147 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-09-24 14:57:26,148 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:26,150 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98
[2020-09-24 14:57:26,151 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:26,167 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104
[2020-09-24 14:57:26,169 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:26,191 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109
[2020-09-24 14:57:26,194 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:57:26,246 INFO  L134       CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked.
[2020-09-24 14:57:26,246 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922061861]
[2020-09-24 14:57:26,246 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 14:57:26,247 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17
[2020-09-24 14:57:26,247 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245383660]
[2020-09-24 14:57:26,247 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-09-24 14:57:26,248 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 14:57:26,248 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-09-24 14:57:26,248 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272
[2020-09-24 14:57:26,249 INFO  L87              Difference]: Start difference. First operand 179 states and 204 transitions. Second operand 17 states.
[2020-09-24 14:57:28,009 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 14:57:28,010 INFO  L93              Difference]: Finished difference Result 298 states and 339 transitions.
[2020-09-24 14:57:28,010 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. 
[2020-09-24 14:57:28,011 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 124
[2020-09-24 14:57:28,012 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 14:57:28,014 INFO  L225             Difference]: With dead ends: 298
[2020-09-24 14:57:28,014 INFO  L226             Difference]: Without dead ends: 189
[2020-09-24 14:57:28,015 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=898, Unknown=0, NotChecked=0, Total=1056
[2020-09-24 14:57:28,016 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 189 states.
[2020-09-24 14:57:28,031 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 181.
[2020-09-24 14:57:28,031 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 181 states.
[2020-09-24 14:57:28,033 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 207 transitions.
[2020-09-24 14:57:28,033 INFO  L78                 Accepts]: Start accepts. Automaton has 181 states and 207 transitions. Word has length 124
[2020-09-24 14:57:28,034 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 14:57:28,034 INFO  L479      AbstractCegarLoop]: Abstraction has 181 states and 207 transitions.
[2020-09-24 14:57:28,034 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-09-24 14:57:28,035 INFO  L276                IsEmpty]: Start isEmpty. Operand 181 states and 207 transitions.
[2020-09-24 14:57:28,037 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2020-09-24 14:57:28,037 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 14:57:28,038 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2020-09-24 14:57:28,038 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-24 14:57:28,038 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 14:57:28,038 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 14:57:28,039 INFO  L82        PathProgramCache]: Analyzing trace with hash -435645933, now seen corresponding path program 1 times
[2020-09-24 14:57:28,039 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 14:57:28,039 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373714882]
[2020-09-24 14:57:28,039 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 14:57:28,096 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-24 14:57:28,102 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-24 14:57:28,102 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-09-24 14:57:28,108 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-24 14:57:28,134 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:57:28 BoogieIcfgContainer
[2020-09-24 14:57:28,134 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 14:57:28,138 INFO  L168              Benchmark]: Toolchain (without parser) took 9193.00 ms. Allocated memory was 139.5 MB in the beginning and 309.3 MB in the end (delta: 169.9 MB). Free memory was 102.1 MB in the beginning and 89.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 183.0 MB. Max. memory is 7.1 GB.
[2020-09-24 14:57:28,139 INFO  L168              Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-09-24 14:57:28,140 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 456.70 ms. Allocated memory was 139.5 MB in the beginning and 200.8 MB in the end (delta: 61.3 MB). Free memory was 101.5 MB in the beginning and 176.8 MB in the end (delta: -75.3 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB.
[2020-09-24 14:57:28,141 INFO  L168              Benchmark]: Boogie Preprocessor took 66.07 ms. Allocated memory is still 200.8 MB. Free memory was 176.8 MB in the beginning and 174.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB.
[2020-09-24 14:57:28,155 INFO  L168              Benchmark]: RCFGBuilder took 695.71 ms. Allocated memory is still 200.8 MB. Free memory was 174.1 MB in the beginning and 133.5 MB in the end (delta: 40.6 MB). Peak memory consumption was 40.6 MB. Max. memory is 7.1 GB.
[2020-09-24 14:57:28,156 INFO  L168              Benchmark]: TraceAbstraction took 7965.06 ms. Allocated memory was 200.8 MB in the beginning and 309.3 MB in the end (delta: 108.5 MB). Free memory was 132.9 MB in the beginning and 89.0 MB in the end (delta: 43.9 MB). Peak memory consumption was 152.4 MB. Max. memory is 7.1 GB.
[2020-09-24 14:57:28,161 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 456.70 ms. Allocated memory was 139.5 MB in the beginning and 200.8 MB in the end (delta: 61.3 MB). Free memory was 101.5 MB in the beginning and 176.8 MB in the end (delta: -75.3 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 66.07 ms. Allocated memory is still 200.8 MB. Free memory was 176.8 MB in the beginning and 174.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 695.71 ms. Allocated memory is still 200.8 MB. Free memory was 174.1 MB in the beginning and 133.5 MB in the end (delta: 40.6 MB). Peak memory consumption was 40.6 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 7965.06 ms. Allocated memory was 200.8 MB in the beginning and 309.3 MB in the end (delta: 108.5 MB). Free memory was 132.9 MB in the beginning and 89.0 MB in the end (delta: 43.9 MB). Peak memory consumption was 152.4 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L96]  CALL, EXPR   nondet_tree()
[L23]  COND FALSE   !(__VERIFIER_nondet_bool())
[L26]               struct node *n = (struct node *)malloc(sizeof(struct node));
[L27]               n->data = __VERIFIER_nondet_int()
[L28]  CALL, EXPR   nondet_tree()
[L23]  COND TRUE    __VERIFIER_nondet_bool()
[L24]               return 0;
[L28]  RET, EXPR    nondet_tree()
[L28]               n->left = nondet_tree()
[L29]  CALL, EXPR   nondet_tree()
[L23]  COND TRUE    __VERIFIER_nondet_bool()
[L24]               return 0;
[L29]  RET, EXPR    nondet_tree()
[L29]               n->right = nondet_tree()
[L30]               return n;
[L96]  RET, EXPR    nondet_tree()
[L96]  CALL         task(nondet_tree())
[L74]  CALL, EXPR   min(t)
[L35]  COND FALSE   !(!n)
[L38]  EXPR         n->left
[L38]  CALL, EXPR   min(n->left)
[L35]  COND TRUE    !n
[L36]               return 2147483647;
[L38]  RET, EXPR    min(n->left)
[L38]               int a = min(n->left);
[L39]  EXPR         n->right
[L39]  CALL, EXPR   min(n->right)
[L35]  COND TRUE    !n
[L36]               return 2147483647;
[L39]  RET, EXPR    min(n->right)
[L39]               int b = min(n->right);
[L40]  COND TRUE    a <= b
[L40]               return a;
[L74]  RET, EXPR    min(t)
[L74]               int a = min(t);
[L75]               int b;
[L77]  CALL, EXPR   size(t)
[L69]  COND FALSE   !(!t)
[L70]  EXPR         t->left
[L70]  CALL, EXPR   size(t->left)
[L69]  COND TRUE    !t
[L69]               return 0;
[L70]  RET, EXPR    size(t->left)
[L70]  EXPR         t->right
[L70]  CALL, EXPR   size(t->right)
[L69]  COND TRUE    !t
[L69]               return 0;
[L70]  RET, EXPR    size(t->right)
[L70]               return size(t->left) + size(t->right) + 1;
[L77]  RET, EXPR    size(t)
[L77]               int n = size(t);
[L78]  CALL         assume_abort_if_not(n != 0)
[L10]  COND FALSE   !(!cond)
[L78]  RET          assume_abort_if_not(n != 0)
[L79]  EXPR, FCALL  calloc(n, sizeof(int))
[L79]               int *x = calloc(n, sizeof(int));
[L80]  CALL         tree_inorder(t, x, n)
[L58]  COND FALSE   !(!t)
[L61]  EXPR         t->left
[L61]  CALL, EXPR   tree_inorder(t->left,  a, i)
[L58]  COND TRUE    !t
[L59]               return i;
[L61]  RET, EXPR    tree_inorder(t->left,  a, i)
[L61]               i = tree_inorder(t->left,  a, i)
[L62]  EXPR         i++
[L62]  EXPR         t->data
[L62]               a[i++] = t->data
[L63]  EXPR         t->right
[L63]  CALL, EXPR   tree_inorder(t->right, a, i)
[L58]  COND TRUE    !t
[L59]               return i;
[L63]  RET, EXPR    tree_inorder(t->right, a, i)
[L63]               i = tree_inorder(t->right, a, i)
[L64]               return i;
[L80]  RET          tree_inorder(t, x, n)
[L81]  EXPR         x[0]
[L81]  CALL         __VERIFIER_assert(a == x[0])
[L14]  COND TRUE    !cond
[L14]               __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 12 procedures, 183 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.8s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 662 SDtfs, 1372 SDslu, 2448 SDs, 0 SdLazy, 4106 SolverSat, 571 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 163 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=183occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 41 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 521 NumberOfCodeBlocks, 521 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 361 ConstructedInterpolants, 0 QuantifiedInterpolants, 108525 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 70/74 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...