/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c


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


This is Ultimate 0.2.0-b8ad66e
[2020-10-23 20:29:35,004 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-23 20:29:35,007 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-23 20:29:35,046 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-23 20:29:35,047 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-23 20:29:35,048 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-23 20:29:35,050 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-23 20:29:35,053 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-23 20:29:35,055 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-23 20:29:35,056 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-23 20:29:35,057 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-23 20:29:35,059 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-23 20:29:35,059 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-23 20:29:35,060 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-23 20:29:35,062 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-23 20:29:35,063 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-23 20:29:35,064 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-23 20:29:35,066 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-23 20:29:35,068 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-23 20:29:35,082 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-23 20:29:35,085 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-23 20:29:35,086 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-23 20:29:35,088 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-23 20:29:35,089 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-23 20:29:35,092 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-23 20:29:35,093 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-23 20:29:35,093 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-23 20:29:35,094 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-23 20:29:35,095 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-23 20:29:35,096 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-23 20:29:35,096 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-23 20:29:35,097 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-23 20:29:35,098 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-23 20:29:35,099 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-23 20:29:35,100 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-23 20:29:35,101 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-23 20:29:35,102 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-23 20:29:35,102 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-23 20:29:35,102 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-23 20:29:35,104 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-23 20:29:35,104 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-23 20:29:35,106 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf
[2020-10-23 20:29:35,118 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-23 20:29:35,119 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-23 20:29:35,121 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-23 20:29:35,121 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-23 20:29:35,121 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-23 20:29:35,122 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-23 20:29:35,122 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-23 20:29:35,122 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-23 20:29:35,123 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-23 20:29:35,123 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-23 20:29:35,123 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-23 20:29:35,123 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-23 20:29:35,124 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-23 20:29:35,124 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-23 20:29:35,124 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-23 20:29:35,125 INFO  L138        SettingsManager]:  * Size of a code block=SingleStatement
[2020-10-23 20:29:35,125 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-23 20:29:35,125 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-23 20:29:35,126 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-23 20:29:35,126 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-23 20:29:35,126 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2020-10-23 20:29:35,126 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-23 20:29:35,127 INFO  L138        SettingsManager]:  * Use separate solver for trace checks=false
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2020-10-23 20:29:35,549 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-23 20:29:35,599 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-23 20:29:35,602 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-23 20:29:35,604 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-23 20:29:35,605 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-23 20:29:35,606 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c
[2020-10-23 20:29:35,693 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/554a30637/5d08b03ac6b0436d97f10002b79d2a42/FLAGe142d1acd
[2020-10-23 20:29:36,346 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-23 20:29:36,347 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c
[2020-10-23 20:29:36,357 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/554a30637/5d08b03ac6b0436d97f10002b79d2a42/FLAGe142d1acd
[2020-10-23 20:29:36,661 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/554a30637/5d08b03ac6b0436d97f10002b79d2a42
[2020-10-23 20:29:36,665 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-23 20:29:36,672 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-23 20:29:36,674 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-23 20:29:36,675 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-23 20:29:36,679 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-23 20:29:36,680 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:29:36" (1/1) ...
[2020-10-23 20:29:36,684 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4489dd21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:36, skipping insertion in model container
[2020-10-23 20:29:36,684 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:29:36" (1/1) ...
[2020-10-23 20:29:36,693 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-23 20:29:36,715 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-23 20:29:36,888 WARN  L1500              CHandler]: Possible shadowing of function min
[2020-10-23 20:29:36,891 WARN  L1500              CHandler]: Possible shadowing of function min
[2020-10-23 20:29:36,916 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-23 20:29:36,934 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-23 20:29:36,957 WARN  L1500              CHandler]: Possible shadowing of function min
[2020-10-23 20:29:36,958 WARN  L1500              CHandler]: Possible shadowing of function min
[2020-10-23 20:29:36,981 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-23 20:29:37,020 INFO  L208         MainTranslator]: Completed translation
[2020-10-23 20:29:37,021 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:37 WrapperNode
[2020-10-23 20:29:37,021 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-23 20:29:37,023 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-23 20:29:37,023 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-23 20:29:37,024 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-23 20:29:37,039 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:37" (1/1) ...
[2020-10-23 20:29:37,040 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:37" (1/1) ...
[2020-10-23 20:29:37,073 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:37" (1/1) ...
[2020-10-23 20:29:37,073 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:37" (1/1) ...
[2020-10-23 20:29:37,119 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:37" (1/1) ...
[2020-10-23 20:29:37,130 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:37" (1/1) ...
[2020-10-23 20:29:37,142 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:37" (1/1) ...
[2020-10-23 20:29:37,154 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-23 20:29:37,155 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-23 20:29:37,155 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-23 20:29:37,156 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-23 20:29:37,161 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:37" (1/1) ...
No working directory specified, using /storage/repos/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
[2020-10-23 20:29:37,302 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-23 20:29:37,302 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-23 20:29:37,302 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-10-23 20:29:37,303 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-23 20:29:37,303 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-10-23 20:29:37,303 INFO  L138     BoogieDeclarations]: Found implementation of procedure nondet_tree
[2020-10-23 20:29:37,304 INFO  L138     BoogieDeclarations]: Found implementation of procedure min
[2020-10-23 20:29:37,304 INFO  L138     BoogieDeclarations]: Found implementation of procedure tree_del
[2020-10-23 20:29:37,304 INFO  L138     BoogieDeclarations]: Found implementation of procedure tree_inorder
[2020-10-23 20:29:37,305 INFO  L138     BoogieDeclarations]: Found implementation of procedure size
[2020-10-23 20:29:37,305 INFO  L138     BoogieDeclarations]: Found implementation of procedure task
[2020-10-23 20:29:37,305 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-23 20:29:37,306 INFO  L138     BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit
[2020-10-23 20:29:37,306 INFO  L130     BoogieDeclarations]: Found specification of procedure calloc
[2020-10-23 20:29:37,307 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-10-23 20:29:37,307 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-10-23 20:29:37,308 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-23 20:29:37,309 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2020-10-23 20:29:37,310 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-23 20:29:37,310 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-10-23 20:29:37,311 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-23 20:29:37,311 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-23 20:29:37,311 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-23 20:29:37,311 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-10-23 20:29:37,312 INFO  L130     BoogieDeclarations]: Found specification of procedure nondet_tree
[2020-10-23 20:29:37,312 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-10-23 20:29:37,312 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-23 20:29:37,312 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-10-23 20:29:37,312 INFO  L130     BoogieDeclarations]: Found specification of procedure min
[2020-10-23 20:29:37,313 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-10-23 20:29:37,313 INFO  L130     BoogieDeclarations]: Found specification of procedure tree_del
[2020-10-23 20:29:37,313 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-23 20:29:37,313 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-23 20:29:37,314 INFO  L130     BoogieDeclarations]: Found specification of procedure tree_inorder
[2020-10-23 20:29:37,314 INFO  L130     BoogieDeclarations]: Found specification of procedure size
[2020-10-23 20:29:37,314 INFO  L130     BoogieDeclarations]: Found specification of procedure task
[2020-10-23 20:29:37,314 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.meminit
[2020-10-23 20:29:37,315 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-23 20:29:37,315 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-23 20:29:37,315 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-23 20:29:37,316 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-23 20:29:38,199 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-23 20:29:38,200 INFO  L298             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-23 20:29:38,202 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:29:38 BoogieIcfgContainer
[2020-10-23 20:29:38,202 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-23 20:29:38,204 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-23 20:29:38,204 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-23 20:29:38,208 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-23 20:29:38,208 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:29:36" (1/3) ...
[2020-10-23 20:29:38,209 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce5ef21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:29:38, skipping insertion in model container
[2020-10-23 20:29:38,209 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:29:37" (2/3) ...
[2020-10-23 20:29:38,210 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce5ef21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:29:38, skipping insertion in model container
[2020-10-23 20:29:38,210 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:29:38" (3/3) ...
[2020-10-23 20:29:38,212 INFO  L111   eAbstractionObserver]: Analyzing ICFG tree_del_rec_incorrect.c
[2020-10-23 20:29:38,224 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-23 20:29:38,230 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-23 20:29:38,244 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-23 20:29:38,269 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-23 20:29:38,269 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-23 20:29:38,269 INFO  L379      AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2020-10-23 20:29:38,270 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-23 20:29:38,270 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-23 20:29:38,270 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-23 20:29:38,270 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-23 20:29:38,270 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-23 20:29:38,291 INFO  L276                IsEmpty]: Start isEmpty. Operand 192 states.
[2020-10-23 20:29:38,307 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2020-10-23 20:29:38,307 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-23 20:29:38,308 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, 1, 1, 1, 1, 1, 1]
[2020-10-23 20:29:38,308 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 20:29:38,315 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 20:29:38,315 INFO  L82        PathProgramCache]: Analyzing trace with hash 1227549006, now seen corresponding path program 1 times
[2020-10-23 20:29:38,325 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-23 20:29:38,326 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226470044]
[2020-10-23 20:29:38,326 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 20:29:38,407 INFO  L321   leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-10-23 20:29:38,516 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:38,757 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 20:29:38,762 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:38,814 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-10-23 20:29:38,817 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:38,822 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2020-10-23 20:29:38,824 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:38,827 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2020-10-23 20:29:38,830 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:38,855 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2020-10-23 20:29:38,858 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:38,939 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-10-23 20:29:38,941 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:39,019 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2020-10-23 20:29:39,022 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:39,040 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-23 20:29:39,041 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226470044]
[2020-10-23 20:29:39,044 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-23 20:29:39,044 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2020-10-23 20:29:39,045 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201469219]
[2020-10-23 20:29:39,051 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-10-23 20:29:39,051 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-23 20:29:39,067 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-10-23 20:29:39,069 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110
[2020-10-23 20:29:39,071 INFO  L87              Difference]: Start difference. First operand 192 states. Second operand 11 states.
[2020-10-23 20:29:40,823 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 20:29:40,823 INFO  L93              Difference]: Finished difference Result 334 states and 390 transitions.
[2020-10-23 20:29:40,824 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-10-23 20:29:40,825 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 66
[2020-10-23 20:29:40,826 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 20:29:40,841 INFO  L225             Difference]: With dead ends: 334
[2020-10-23 20:29:40,841 INFO  L226             Difference]: Without dead ends: 194
[2020-10-23 20:29:40,847 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306
[2020-10-23 20:29:40,867 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 194 states.
[2020-10-23 20:29:40,933 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 181.
[2020-10-23 20:29:40,935 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 181 states.
[2020-10-23 20:29:40,942 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 204 transitions.
[2020-10-23 20:29:40,945 INFO  L78                 Accepts]: Start accepts. Automaton has 181 states and 204 transitions. Word has length 66
[2020-10-23 20:29:40,946 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-23 20:29:40,947 INFO  L481      AbstractCegarLoop]: Abstraction has 181 states and 204 transitions.
[2020-10-23 20:29:40,948 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-10-23 20:29:40,949 INFO  L276                IsEmpty]: Start isEmpty. Operand 181 states and 204 transitions.
[2020-10-23 20:29:40,962 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 87
[2020-10-23 20:29:40,974 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-23 20:29:40,975 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, 1, 1, 1, 1, 1, 1]
[2020-10-23 20:29:40,976 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-23 20:29:40,976 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 20:29:40,977 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 20:29:40,977 INFO  L82        PathProgramCache]: Analyzing trace with hash -1622442284, now seen corresponding path program 1 times
[2020-10-23 20:29:40,978 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-23 20:29:40,979 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237577673]
[2020-10-23 20:29:40,979 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 20:29:40,990 INFO  L321   leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-10-23 20:29:41,033 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:41,132 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 20:29:41,135 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:41,163 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-10-23 20:29:41,168 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:41,201 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2020-10-23 20:29:41,204 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:41,207 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2020-10-23 20:29:41,213 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:41,261 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 20:29:41,263 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:41,267 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-10-23 20:29:41,269 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:41,274 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59
[2020-10-23 20:29:41,275 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:41,292 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2020-10-23 20:29:41,294 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:41,319 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70
[2020-10-23 20:29:41,321 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:41,339 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2020-10-23 20:29:41,339 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237577673]
[2020-10-23 20:29:41,339 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-23 20:29:41,340 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2020-10-23 20:29:41,340 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117287323]
[2020-10-23 20:29:41,341 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-10-23 20:29:41,341 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-23 20:29:41,342 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-10-23 20:29:41,342 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132
[2020-10-23 20:29:41,342 INFO  L87              Difference]: Start difference. First operand 181 states and 204 transitions. Second operand 12 states.
[2020-10-23 20:29:43,023 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 20:29:43,024 INFO  L93              Difference]: Finished difference Result 323 states and 368 transitions.
[2020-10-23 20:29:43,024 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-23 20:29:43,025 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 86
[2020-10-23 20:29:43,025 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 20:29:43,030 INFO  L225             Difference]: With dead ends: 323
[2020-10-23 20:29:43,030 INFO  L226             Difference]: Without dead ends: 193
[2020-10-23 20:29:43,033 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380
[2020-10-23 20:29:43,034 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 193 states.
[2020-10-23 20:29:43,074 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 183.
[2020-10-23 20:29:43,074 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 183 states.
[2020-10-23 20:29:43,079 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 207 transitions.
[2020-10-23 20:29:43,079 INFO  L78                 Accepts]: Start accepts. Automaton has 183 states and 207 transitions. Word has length 86
[2020-10-23 20:29:43,080 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-23 20:29:43,080 INFO  L481      AbstractCegarLoop]: Abstraction has 183 states and 207 transitions.
[2020-10-23 20:29:43,080 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-10-23 20:29:43,080 INFO  L276                IsEmpty]: Start isEmpty. Operand 183 states and 207 transitions.
[2020-10-23 20:29:43,082 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 108
[2020-10-23 20:29:43,082 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-23 20:29:43,082 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, 1, 1, 1, 1, 1, 1]
[2020-10-23 20:29:43,083 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-23 20:29:43,083 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 20:29:43,083 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 20:29:43,084 INFO  L82        PathProgramCache]: Analyzing trace with hash -1316397024, now seen corresponding path program 1 times
[2020-10-23 20:29:43,084 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-23 20:29:43,084 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830826466]
[2020-10-23 20:29:43,084 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 20:29:43,088 INFO  L321   leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-10-23 20:29:43,109 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:43,205 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 20:29:43,209 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:43,241 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-10-23 20:29:43,257 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:43,347 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-10-23 20:29:43,350 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:43,353 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-10-23 20:29:43,356 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:43,361 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41
[2020-10-23 20:29:43,363 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:43,401 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2020-10-23 20:29:43,408 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:43,414 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 20:29:43,415 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:43,417 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-10-23 20:29:43,418 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:43,420 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80
[2020-10-23 20:29:43,422 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:43,441 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-10-23 20:29:43,443 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:43,473 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91
[2020-10-23 20:29:43,475 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:43,498 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2020-10-23 20:29:43,499 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830826466]
[2020-10-23 20:29:43,499 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-23 20:29:43,500 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2020-10-23 20:29:43,500 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267072438]
[2020-10-23 20:29:43,501 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-10-23 20:29:43,501 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-23 20:29:43,501 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-10-23 20:29:43,502 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182
[2020-10-23 20:29:43,502 INFO  L87              Difference]: Start difference. First operand 183 states and 207 transitions. Second operand 14 states.
[2020-10-23 20:29:45,272 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 20:29:45,272 INFO  L93              Difference]: Finished difference Result 322 states and 367 transitions.
[2020-10-23 20:29:45,273 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2020-10-23 20:29:45,273 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states. Word has length 107
[2020-10-23 20:29:45,274 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 20:29:45,277 INFO  L225             Difference]: With dead ends: 322
[2020-10-23 20:29:45,277 INFO  L226             Difference]: Without dead ends: 195
[2020-10-23 20:29:45,279 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600
[2020-10-23 20:29:45,279 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 195 states.
[2020-10-23 20:29:45,321 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 185.
[2020-10-23 20:29:45,321 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 185 states.
[2020-10-23 20:29:45,323 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 210 transitions.
[2020-10-23 20:29:45,324 INFO  L78                 Accepts]: Start accepts. Automaton has 185 states and 210 transitions. Word has length 107
[2020-10-23 20:29:45,324 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-23 20:29:45,325 INFO  L481      AbstractCegarLoop]: Abstraction has 185 states and 210 transitions.
[2020-10-23 20:29:45,325 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-10-23 20:29:45,325 INFO  L276                IsEmpty]: Start isEmpty. Operand 185 states and 210 transitions.
[2020-10-23 20:29:45,326 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 131
[2020-10-23 20:29:45,327 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-23 20:29:45,327 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, 1, 1, 1, 1, 1, 1]
[2020-10-23 20:29:45,327 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-23 20:29:45,327 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 20:29:45,328 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 20:29:45,328 INFO  L82        PathProgramCache]: Analyzing trace with hash -1259421689, now seen corresponding path program 1 times
[2020-10-23 20:29:45,328 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-23 20:29:45,328 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630917422]
[2020-10-23 20:29:45,329 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 20:29:45,334 INFO  L321   leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-10-23 20:29:45,359 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:45,450 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 20:29:45,452 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:45,477 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-10-23 20:29:45,485 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:45,550 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-10-23 20:29:45,554 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:45,557 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-10-23 20:29:45,560 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:45,564 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41
[2020-10-23 20:29:45,572 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:45,620 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 20:29:45,623 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:45,625 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2020-10-23 20:29:45,627 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:45,632 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74
[2020-10-23 20:29:45,636 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:45,641 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-10-23 20:29:45,642 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:45,644 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-10-23 20:29:45,645 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:45,647 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103
[2020-10-23 20:29:45,649 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:45,667 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109
[2020-10-23 20:29:45,670 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:45,705 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114
[2020-10-23 20:29:45,740 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 20:29:45,811 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked.
[2020-10-23 20:29:45,812 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630917422]
[2020-10-23 20:29:45,812 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-23 20:29:45,812 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17
[2020-10-23 20:29:45,812 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107020055]
[2020-10-23 20:29:45,813 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 17 states
[2020-10-23 20:29:45,813 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-23 20:29:45,814 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2020-10-23 20:29:45,814 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272
[2020-10-23 20:29:45,814 INFO  L87              Difference]: Start difference. First operand 185 states and 210 transitions. Second operand 17 states.
[2020-10-23 20:29:48,100 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 20:29:48,101 INFO  L93              Difference]: Finished difference Result 305 states and 346 transitions.
[2020-10-23 20:29:48,101 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. 
[2020-10-23 20:29:48,102 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 130
[2020-10-23 20:29:48,103 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 20:29:48,108 INFO  L225             Difference]: With dead ends: 305
[2020-10-23 20:29:48,108 INFO  L226             Difference]: Without dead ends: 195
[2020-10-23 20:29:48,110 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=158, Invalid=898, Unknown=0, NotChecked=0, Total=1056
[2020-10-23 20:29:48,113 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 195 states.
[2020-10-23 20:29:48,172 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 187.
[2020-10-23 20:29:48,173 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 187 states.
[2020-10-23 20:29:48,178 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 213 transitions.
[2020-10-23 20:29:48,178 INFO  L78                 Accepts]: Start accepts. Automaton has 187 states and 213 transitions. Word has length 130
[2020-10-23 20:29:48,179 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-23 20:29:48,179 INFO  L481      AbstractCegarLoop]: Abstraction has 187 states and 213 transitions.
[2020-10-23 20:29:48,179 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2020-10-23 20:29:48,179 INFO  L276                IsEmpty]: Start isEmpty. Operand 187 states and 213 transitions.
[2020-10-23 20:29:48,183 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 163
[2020-10-23 20:29:48,183 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-23 20:29:48,184 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, 1, 1, 1, 1, 1, 1]
[2020-10-23 20:29:48,185 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-23 20:29:48,185 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 20:29:48,185 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 20:29:48,185 INFO  L82        PathProgramCache]: Analyzing trace with hash -1639938800, now seen corresponding path program 1 times
[2020-10-23 20:29:48,186 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-23 20:29:48,186 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791761403]
[2020-10-23 20:29:48,187 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 20:29:48,198 INFO  L321   leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-10-23 20:29:48,270 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-23 20:29:48,270 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-10-23 20:29:48,347 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-23 20:29:48,347 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-10-23 20:29:48,438 INFO  L173   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-10-23 20:29:48,439 INFO  L523         BasicCegarLoop]: Counterexample might be feasible
[2020-10-23 20:29:48,442 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-23 20:29:48,484 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:29:48 BoogieIcfgContainer
[2020-10-23 20:29:48,484 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-10-23 20:29:48,490 INFO  L168              Benchmark]: Toolchain (without parser) took 11819.22 ms. Allocated memory was 154.1 MB in the beginning and 283.1 MB in the end (delta: 129.0 MB). Free memory was 130.4 MB in the beginning and 179.8 MB in the end (delta: -49.4 MB). Peak memory consumption was 80.5 MB. Max. memory is 8.0 GB.
[2020-10-23 20:29:48,491 INFO  L168              Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 154.1 MB. Free memory is still 128.4 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2020-10-23 20:29:48,493 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 347.15 ms. Allocated memory is still 154.1 MB. Free memory was 129.8 MB in the beginning and 117.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB.
[2020-10-23 20:29:48,499 INFO  L168              Benchmark]: Boogie Preprocessor took 131.04 ms. Allocated memory is still 154.1 MB. Free memory was 117.8 MB in the beginning and 115.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB.
[2020-10-23 20:29:48,501 INFO  L168              Benchmark]: RCFGBuilder took 1047.12 ms. Allocated memory is still 154.1 MB. Free memory was 115.5 MB in the beginning and 108.5 MB in the end (delta: 7.0 MB). Peak memory consumption was 14.5 MB. Max. memory is 8.0 GB.
[2020-10-23 20:29:48,501 INFO  L168              Benchmark]: TraceAbstraction took 10280.61 ms. Allocated memory was 154.1 MB in the beginning and 283.1 MB in the end (delta: 129.0 MB). Free memory was 108.0 MB in the beginning and 179.8 MB in the end (delta: -71.8 MB). Peak memory consumption was 56.6 MB. Max. memory is 8.0 GB.
[2020-10-23 20:29:48,512 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.30 ms. Allocated memory is still 154.1 MB. Free memory is still 128.4 MB. There was no memory consumed. Max. memory is 8.0 GB.
 * CACSL2BoogieTranslator took 347.15 ms. Allocated memory is still 154.1 MB. Free memory was 129.8 MB in the beginning and 117.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB.
 * Boogie Preprocessor took 131.04 ms. Allocated memory is still 154.1 MB. Free memory was 117.8 MB in the beginning and 115.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB.
 * RCFGBuilder took 1047.12 ms. Allocated memory is still 154.1 MB. Free memory was 115.5 MB in the beginning and 108.5 MB in the end (delta: 7.0 MB). Peak memory consumption was 14.5 MB. Max. memory is 8.0 GB.
 * TraceAbstraction took 10280.61 ms. Allocated memory was 154.1 MB in the beginning and 283.1 MB in the end (delta: 129.0 MB). Free memory was 108.0 MB in the beginning and 179.8 MB in the end (delta: -71.8 MB). Peak memory consumption was 56.6 MB. Max. memory is 8.0 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: 
[L98]  CALL, EXPR   nondet_tree()
[L25]  COND FALSE   !(__VERIFIER_nondet_bool())
[L28]               struct node *n = (struct node *)malloc(sizeof(struct node));
[L29]               n->data = __VERIFIER_nondet_int()
[L30]  CALL, EXPR   nondet_tree()
[L25]  COND TRUE    __VERIFIER_nondet_bool()
[L26]               return 0;
[L30]  RET, EXPR    nondet_tree()
[L30]               n->left = nondet_tree()
[L31]  CALL, EXPR   nondet_tree()
[L25]  COND TRUE    __VERIFIER_nondet_bool()
[L26]               return 0;
[L31]  RET, EXPR    nondet_tree()
[L31]               n->right = nondet_tree()
[L32]               return n;
[L98]  RET, EXPR    nondet_tree()
[L98]  CALL         task(nondet_tree())
[L76]  CALL, EXPR   min(t)
[L37]  COND FALSE   !(!n)
[L40]  EXPR         n->left
[L40]  CALL, EXPR   min(n->left)
[L37]  COND TRUE    !n
[L38]               return 2147483647;
[L40]  RET, EXPR    min(n->left)
[L40]               int a = min(n->left);
[L41]  EXPR         n->right
[L41]  CALL, EXPR   min(n->right)
[L37]  COND TRUE    !n
[L38]               return 2147483647;
[L41]  RET, EXPR    min(n->right)
[L41]               int b = min(n->right);
[L42]  COND TRUE    a <= b
[L42]               return a;
[L76]  RET, EXPR    min(t)
[L76]               int a = min(t);
[L77]               int b;
[L79]  CALL, EXPR   size(t)
[L71]  COND FALSE   !(!t)
[L72]  EXPR         t->left
[L72]  CALL, EXPR   size(t->left)
[L71]  COND TRUE    !t
[L71]               return 0;
[L72]  RET, EXPR    size(t->left)
[L72]  EXPR         t->right
[L72]  CALL, EXPR   size(t->right)
[L71]  COND TRUE    !t
[L71]               return 0;
[L72]  RET, EXPR    size(t->right)
[L72]               return size(t->left) + size(t->right) + 1;
[L79]  RET, EXPR    size(t)
[L79]               int n = size(t);
[L80]  CALL         assume_abort_if_not(n != 0)
[L10]  COND FALSE   !(!cond)
[L80]  RET          assume_abort_if_not(n != 0)
[L81]  EXPR, FCALL  calloc(n, sizeof(int))
[L81]               int *x = calloc(n, sizeof(int));
[L82]  CALL         tree_inorder(t, x, n)
[L60]  COND FALSE   !(!t)
[L63]  EXPR         t->left
[L63]  CALL, EXPR   tree_inorder(t->left,  a, i)
[L60]  COND TRUE    !t
[L61]               return i;
[L63]  RET, EXPR    tree_inorder(t->left,  a, i)
[L63]               i = tree_inorder(t->left,  a, i)
[L64]  EXPR         i++
[L64]  EXPR         t->data
[L64]               a[i++] = t->data
[L65]  EXPR         t->right
[L65]  CALL, EXPR   tree_inorder(t->right, a, i)
[L60]  COND TRUE    !t
[L61]               return i;
[L65]  RET, EXPR    tree_inorder(t->right, a, i)
[L65]               i = tree_inorder(t->right, a, i)
[L66]               return i;
[L82]  RET          tree_inorder(t, x, n)
[L83]  EXPR         x[0]
[L83]  CALL         __VERIFIER_assert(a == x[0])
[L16]  COND TRUE    !cond
[L16]  CALL         reach_error()
[L14]               __assert_fail("0", "tree_del_rec_incorrect.c", 14, "reach_error")

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 13 procedures, 192 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.1s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 678 SDtfs, 1570 SDslu, 2443 SDs, 0 SdLazy, 4247 SolverSat, 657 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 163 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=192occurred 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: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 41 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...