/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/nested_structure_noptr-2.i


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


This is Ultimate 0.1.25-177f698
[2020-08-22 05:28:56,208 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-08-22 05:28:56,210 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-22 05:28:56,234 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-22 05:28:56,234 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-22 05:28:56,235 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-22 05:28:56,237 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-22 05:28:56,238 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-22 05:28:56,240 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-22 05:28:56,241 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-22 05:28:56,242 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-08-22 05:28:56,243 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-22 05:28:56,243 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-22 05:28:56,244 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-22 05:28:56,245 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-22 05:28:56,246 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-22 05:28:56,247 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-22 05:28:56,248 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-22 05:28:56,250 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-22 05:28:56,254 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-22 05:28:56,256 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-22 05:28:56,257 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-22 05:28:56,258 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-08-22 05:28:56,262 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-22 05:28:56,266 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-22 05:28:56,267 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-22 05:28:56,267 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-22 05:28:56,268 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-22 05:28:56,268 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-22 05:28:56,271 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-22 05:28:56,273 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-22 05:28:56,274 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-22 05:28:56,274 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-22 05:28:56,275 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-22 05:28:56,276 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-22 05:28:56,277 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-08-22 05:28:56,280 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-08-22 05:28:56,280 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-08-22 05:28:56,280 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-08-22 05:28:56,281 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-08-22 05:28:56,282 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-08-22 05:28:56,282 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
[2020-08-22 05:28:56,328 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-22 05:28:56,329 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-22 05:28:56,331 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-08-22 05:28:56,331 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-08-22 05:28:56,331 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-08-22 05:28:56,331 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-22 05:28:56,332 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-08-22 05:28:56,332 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-22 05:28:56,332 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-08-22 05:28:56,332 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-22 05:28:56,333 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-22 05:28:56,333 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-22 05:28:56,333 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-22 05:28:56,334 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-08-22 05:28:56,334 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-22 05:28:56,334 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-22 05:28:56,334 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-22 05:28:56,335 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-22 05:28:56,335 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-08-22 05:28:56,335 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-22 05:28:56,335 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-22 05:28:56,336 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-22 05:28:56,336 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-22 05:28:56,336 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-08-22 05:28:56,336 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-08-22 05:28:56,336 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-08-22 05:28:56,337 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-08-22 05:28:56,337 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-22 05:28:56,337 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-08-22 05:28:56,337 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.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true;
[2020-08-22 05:28:56,702 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-22 05:28:56,715 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-22 05:28:56,718 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-22 05:28:56,720 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-22 05:28:56,720 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-22 05:28:56,721 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/nested_structure_noptr-2.i
[2020-08-22 05:28:56,799 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7142b797a/87d7e3ccb93b4edfa0511908c3b26a51/FLAG613b40b3c
[2020-08-22 05:28:57,212 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-22 05:28:57,213 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/nested_structure_noptr-2.i
[2020-08-22 05:28:57,219 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7142b797a/87d7e3ccb93b4edfa0511908c3b26a51/FLAG613b40b3c
[2020-08-22 05:28:57,647 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7142b797a/87d7e3ccb93b4edfa0511908c3b26a51
[2020-08-22 05:28:57,654 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-22 05:28:57,656 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-22 05:28:57,657 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-22 05:28:57,657 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-22 05:28:57,661 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-22 05:28:57,662 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:28:57" (1/1) ...
[2020-08-22 05:28:57,665 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445b6256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:57, skipping insertion in model container
[2020-08-22 05:28:57,665 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:28:57" (1/1) ...
[2020-08-22 05:28:57,673 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-22 05:28:57,694 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-22 05:28:57,929 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-22 05:28:57,933 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-22 05:28:57,950 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-22 05:28:57,967 INFO  L208         MainTranslator]: Completed translation
[2020-08-22 05:28:57,967 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:57 WrapperNode
[2020-08-22 05:28:57,968 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-22 05:28:57,968 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-22 05:28:57,969 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-22 05:28:57,969 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-22 05:28:58,065 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:57" (1/1) ...
[2020-08-22 05:28:58,067 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:57" (1/1) ...
[2020-08-22 05:28:58,074 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:57" (1/1) ...
[2020-08-22 05:28:58,074 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:57" (1/1) ...
[2020-08-22 05:28:58,081 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:57" (1/1) ...
[2020-08-22 05:28:58,083 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:57" (1/1) ...
[2020-08-22 05:28:58,085 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:57" (1/1) ...
[2020-08-22 05:28:58,092 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-22 05:28:58,093 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-22 05:28:58,093 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-22 05:28:58,093 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-22 05:28:58,094 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:57" (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
[2020-08-22 05:28:58,151 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-22 05:28:58,151 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-22 05:28:58,152 INFO  L138     BoogieDeclarations]: Found implementation of procedure __blast_assert
[2020-08-22 05:28:58,152 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-22 05:28:58,152 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-22 05:28:58,152 INFO  L130     BoogieDeclarations]: Found specification of procedure __blast_assert
[2020-08-22 05:28:58,152 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-22 05:28:58,152 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-08-22 05:28:58,152 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-08-22 05:28:58,153 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-08-22 05:28:58,153 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-08-22 05:28:58,153 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-08-22 05:28:58,153 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-22 05:28:58,154 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-22 05:28:58,356 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-22 05:28:58,358 INFO  L295             CfgBuilder]: Removed 0 assume(true) statements.
[2020-08-22 05:28:58,362 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:28:58 BoogieIcfgContainer
[2020-08-22 05:28:58,368 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-22 05:28:58,369 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-22 05:28:58,370 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-22 05:28:58,375 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-22 05:28:58,380 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:28:57" (1/3) ...
[2020-08-22 05:28:58,381 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e562b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:28:58, skipping insertion in model container
[2020-08-22 05:28:58,381 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:57" (2/3) ...
[2020-08-22 05:28:58,382 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e562b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:28:58, skipping insertion in model container
[2020-08-22 05:28:58,385 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:28:58" (3/3) ...
[2020-08-22 05:28:58,387 INFO  L109   eAbstractionObserver]: Analyzing ICFG nested_structure_noptr-2.i
[2020-08-22 05:28:58,407 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-22 05:28:58,414 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-22 05:28:58,428 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-22 05:28:58,453 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-22 05:28:58,454 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-22 05:28:58,454 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-22 05:28:58,454 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-22 05:28:58,454 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-22 05:28:58,454 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-22 05:28:58,455 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-22 05:28:58,455 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-22 05:28:58,471 INFO  L276                IsEmpty]: Start isEmpty. Operand 17 states.
[2020-08-22 05:28:58,476 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2020-08-22 05:28:58,476 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-22 05:28:58,477 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-22 05:28:58,477 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 05:28:58,481 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 05:28:58,482 INFO  L82        PathProgramCache]: Analyzing trace with hash -1215743292, now seen corresponding path program 1 times
[2020-08-22 05:28:58,489 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 05:28:58,495 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994879969]
[2020-08-22 05:28:58,495 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 05:28:58,604 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 05:28:58,696 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-22 05:28:58,699 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 05:28:58,708 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-22 05:28:58,711 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994879969]
[2020-08-22 05:28:58,713 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-22 05:28:58,713 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-22 05:28:58,714 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148746050]
[2020-08-22 05:28:58,719 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-22 05:28:58,719 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-22 05:28:58,730 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-22 05:28:58,731 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-22 05:28:58,732 INFO  L87              Difference]: Start difference. First operand 17 states. Second operand 4 states.
[2020-08-22 05:28:58,791 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-22 05:28:58,791 INFO  L93              Difference]: Finished difference Result 22 states and 21 transitions.
[2020-08-22 05:28:58,792 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-08-22 05:28:58,793 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 9
[2020-08-22 05:28:58,794 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-22 05:28:58,802 INFO  L225             Difference]: With dead ends: 22
[2020-08-22 05:28:58,802 INFO  L226             Difference]: Without dead ends: 0
[2020-08-22 05:28:58,805 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-08-22 05:28:58,821 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-08-22 05:28:58,826 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-08-22 05:28:58,827 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-08-22 05:28:58,828 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-08-22 05:28:58,829 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9
[2020-08-22 05:28:58,829 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-22 05:28:58,830 INFO  L479      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-08-22 05:28:58,830 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-22 05:28:58,830 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-08-22 05:28:58,830 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-08-22 05:28:58,831 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-22 05:28:58,833 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-08-22 05:28:58,896 INFO  L268        CegarLoopResult]: For program point  ULTIMATE.initFINAL(line -1)  no Hoare annotation was computed.
[2020-08-22 05:28:58,897 INFO  L264        CegarLoopResult]: At program point  ULTIMATE.initENTRY(line -1)  the Hoare annotation is:  (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|))
[2020-08-22 05:28:58,897 INFO  L268        CegarLoopResult]: For program point  ULTIMATE.initEXIT(line -1)  no Hoare annotation was computed.
[2020-08-22 05:28:58,898 INFO  L268        CegarLoopResult]: For program point  __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10)  no Hoare annotation was computed.
[2020-08-22 05:28:58,898 INFO  L268        CegarLoopResult]: For program point  __blast_assertEXIT(lines 8 11)  no Hoare annotation was computed.
[2020-08-22 05:28:58,899 INFO  L268        CegarLoopResult]: For program point  __blast_assertFINAL(lines 8 11)  no Hoare annotation was computed.
[2020-08-22 05:28:58,899 INFO  L271        CegarLoopResult]: At program point  __blast_assertENTRY(lines 8 11)  the Hoare annotation is:  true
[2020-08-22 05:28:58,899 INFO  L268        CegarLoopResult]: For program point  ULTIMATE.startEXIT(line -1)  no Hoare annotation was computed.
[2020-08-22 05:28:58,900 INFO  L271        CegarLoopResult]: At program point  L-1(line -1)  the Hoare annotation is:  true
[2020-08-22 05:28:58,900 INFO  L271        CegarLoopResult]: At program point  ULTIMATE.startENTRY(line -1)  the Hoare annotation is:  true
[2020-08-22 05:28:58,900 INFO  L268        CegarLoopResult]: For program point  ULTIMATE.startFINAL(line -1)  no Hoare annotation was computed.
[2020-08-22 05:28:58,900 INFO  L264        CegarLoopResult]: At program point  mainENTRY(lines 25 31)  the Hoare annotation is:  (= |old(#valid)| |#valid|)
[2020-08-22 05:28:58,900 INFO  L268        CegarLoopResult]: For program point  L29(line 29)  no Hoare annotation was computed.
[2020-08-22 05:28:58,901 INFO  L268        CegarLoopResult]: For program point  mainFINAL(lines 25 31)  no Hoare annotation was computed.
[2020-08-22 05:28:58,901 INFO  L264        CegarLoopResult]: At program point  L29-2(line 29)  the Hoare annotation is:  false
[2020-08-22 05:28:58,901 INFO  L268        CegarLoopResult]: For program point  L29-3(line 29)  no Hoare annotation was computed.
[2020-08-22 05:28:58,901 INFO  L268        CegarLoopResult]: For program point  mainEXIT(lines 25 31)  no Hoare annotation was computed.
[2020-08-22 05:28:58,908 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:28:58 BoogieIcfgContainer
[2020-08-22 05:28:58,908 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-08-22 05:28:58,911 INFO  L168              Benchmark]: Toolchain (without parser) took 1253.87 ms. Allocated memory was 137.4 MB in the beginning and 198.7 MB in the end (delta: 61.3 MB). Free memory was 100.7 MB in the beginning and 135.7 MB in the end (delta: -35.0 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB.
[2020-08-22 05:28:58,912 INFO  L168              Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-08-22 05:28:58,913 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 311.19 ms. Allocated memory is still 137.4 MB. Free memory was 100.4 MB in the beginning and 90.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
[2020-08-22 05:28:58,914 INFO  L168              Benchmark]: Boogie Preprocessor took 123.97 ms. Allocated memory was 137.4 MB in the beginning and 198.7 MB in the end (delta: 61.3 MB). Free memory was 90.6 MB in the beginning and 176.3 MB in the end (delta: -85.7 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB.
[2020-08-22 05:28:58,915 INFO  L168              Benchmark]: RCFGBuilder took 275.31 ms. Allocated memory is still 198.7 MB. Free memory was 175.6 MB in the beginning and 163.9 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB.
[2020-08-22 05:28:58,916 INFO  L168              Benchmark]: TraceAbstraction took 538.54 ms. Allocated memory is still 198.7 MB. Free memory was 163.2 MB in the beginning and 135.7 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB.
[2020-08-22 05:28:58,921 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 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 311.19 ms. Allocated memory is still 137.4 MB. Free memory was 100.4 MB in the beginning and 90.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 123.97 ms. Allocated memory was 137.4 MB in the beginning and 198.7 MB in the end (delta: 61.3 MB). Free memory was 90.6 MB in the beginning and 176.3 MB in the end (delta: -85.7 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 275.31 ms. Allocated memory is still 198.7 MB. Free memory was 175.6 MB in the beginning and 163.9 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 538.54 ms. Allocated memory is still 198.7 MB. Free memory was 163.2 MB in the beginning and 135.7 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable
    For all program executions holds that call of __VERIFIER_error() unreachable at this location
  - AllSpecificationsHoldResult: All specifications hold
    1 specifications checked. All of them hold
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 1 SDslu, 11 SDs, 0 SdLazy, 10 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 17 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 152 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 correct!
Received shutdown request...