/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/nec20.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 20:41:51,031 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 20:41:51,035 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 20:41:51,084 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 20:41:51,085 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 20:41:51,096 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 20:41:51,098 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 20:41:51,102 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 20:41:51,105 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 20:41:51,108 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 20:41:51,109 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 20:41:51,110 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 20:41:51,111 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 20:41:51,114 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 20:41:51,116 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 20:41:51,118 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 20:41:51,120 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 20:41:51,121 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 20:41:51,123 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 20:41:51,132 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 20:41:51,135 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 20:41:51,136 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 20:41:51,137 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 20:41:51,138 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 20:41:51,140 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 20:41:51,141 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 20:41:51,141 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 20:41:51,144 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 20:41:51,145 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 20:41:51,146 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 20:41:51,146 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 20:41:51,147 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 20:41:51,147 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 20:41:51,148 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 20:41:51,150 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 20:41:51,150 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 20:41:51,151 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 20:41:51,151 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 20:41:51,151 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 20:41:51,152 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 20:41:51,154 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 20:41:51,155 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-09-24 20:41:51,202 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 20:41:51,202 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 20:41:51,205 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 20:41:51,205 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 20:41:51,205 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 20:41:51,205 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 20:41:51,206 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 20:41:51,206 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 20:41:51,206 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 20:41:51,206 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 20:41:51,207 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 20:41:51,208 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 20:41:51,208 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 20:41:51,208 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 20:41:51,208 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 20:41:51,209 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 20:41:51,209 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 20:41:51,209 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 20:41:51,209 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 20:41:51,209 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 20:41:51,210 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 20:41:51,210 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 20:41:51,210 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 20:41:51,210 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 20:41:51,210 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 20:41:51,211 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 20:41:51,211 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 20:41:51,211 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 20:41:51,211 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 20:41:51,211 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;
[2020-09-24 20:41:51,676 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 20:41:51,699 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 20:41:51,704 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 20:41:51,706 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 20:41:51,706 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 20:41:51,707 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec20.c
[2020-09-24 20:41:51,796 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/374194c71/0e9201be59344185b1d1c3454d96142d/FLAG9f0d315c3
[2020-09-24 20:41:52,325 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 20:41:52,326 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/nec20.c
[2020-09-24 20:41:52,334 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/374194c71/0e9201be59344185b1d1c3454d96142d/FLAG9f0d315c3
[2020-09-24 20:41:52,662 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/374194c71/0e9201be59344185b1d1c3454d96142d
[2020-09-24 20:41:52,674 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 20:41:52,681 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 20:41:52,682 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 20:41:52,682 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 20:41:52,686 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 20:41:52,687 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:41:52" (1/1) ...
[2020-09-24 20:41:52,691 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c489c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:52, skipping insertion in model container
[2020-09-24 20:41:52,691 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:41:52" (1/1) ...
[2020-09-24 20:41:52,700 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 20:41:52,725 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 20:41:52,934 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 20:41:52,940 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 20:41:52,962 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 20:41:52,978 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 20:41:52,978 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:52 WrapperNode
[2020-09-24 20:41:52,978 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 20:41:52,979 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 20:41:52,979 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 20:41:52,979 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 20:41:52,992 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:52" (1/1) ...
[2020-09-24 20:41:52,992 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:52" (1/1) ...
[2020-09-24 20:41:53,082 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:52" (1/1) ...
[2020-09-24 20:41:53,083 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:52" (1/1) ...
[2020-09-24 20:41:53,089 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:52" (1/1) ...
[2020-09-24 20:41:53,095 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:52" (1/1) ...
[2020-09-24 20:41:53,097 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:52" (1/1) ...
[2020-09-24 20:41:53,099 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 20:41:53,099 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 20:41:53,099 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 20:41:53,099 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 20:41:53,101 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:52" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 20:41:53,173 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 20:41:53,174 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 20:41:53,174 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-24 20:41:53,174 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 20:41:53,174 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 20:41:53,174 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint
[2020-09-24 20:41:53,175 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-24 20:41:53,175 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2020-09-24 20:41:53,175 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 20:41:53,175 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 20:41:53,176 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 20:41:53,425 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 20:41:53,425 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-24 20:41:53,430 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:41:53 BoogieIcfgContainer
[2020-09-24 20:41:53,430 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 20:41:53,432 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 20:41:53,432 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 20:41:53,435 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 20:41:53,436 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:41:52" (1/3) ...
[2020-09-24 20:41:53,437 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327d7cc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:41:53, skipping insertion in model container
[2020-09-24 20:41:53,437 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:52" (2/3) ...
[2020-09-24 20:41:53,437 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327d7cc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:41:53, skipping insertion in model container
[2020-09-24 20:41:53,437 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:41:53" (3/3) ...
[2020-09-24 20:41:53,440 INFO  L109   eAbstractionObserver]: Analyzing ICFG nec20.c
[2020-09-24 20:41:53,459 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 20:41:53,482 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 20:41:53,506 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 20:41:53,531 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 20:41:53,531 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 20:41:53,531 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 20:41:53,532 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 20:41:53,532 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 20:41:53,532 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 20:41:53,532 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 20:41:53,532 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 20:41:53,552 INFO  L276                IsEmpty]: Start isEmpty. Operand 42 states.
[2020-09-24 20:41:53,559 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-09-24 20:41:53,559 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 20:41:53,560 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]
[2020-09-24 20:41:53,560 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:41:53,566 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:41:53,567 INFO  L82        PathProgramCache]: Analyzing trace with hash -1806400052, now seen corresponding path program 1 times
[2020-09-24 20:41:53,575 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:41:53,576 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865496408]
[2020-09-24 20:41:53,576 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:41:53,716 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:41:53,752 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:41:53,876 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:41:53,876 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 32
[2020-09-24 20:41:53,877 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:41:53,877 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 154
[2020-09-24 20:41:53,879 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:41:53,879 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 20:41:53,880 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 20
[2020-09-24 20:41:53,880 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-24 20:41:53,880 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-24 20:41:54,024 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 20:41:54,027 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:41:54,029 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:41:54,031 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:41:54,032 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-24 20:41:54,032 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:41:54,032 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 20:41:54,033 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:41:54,033 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 20:41:54,033 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:41:54,034 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 20:41:54,034 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 20:41:54,047 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 20:41:54,052 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865496408]
[2020-09-24 20:41:54,054 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 20:41:54,054 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 20:41:54,055 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496336671]
[2020-09-24 20:41:54,062 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 20:41:54,063 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 20:41:54,079 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 20:41:54,080 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 20:41:54,082 INFO  L87              Difference]: Start difference. First operand 42 states. Second operand 4 states.
[2020-09-24 20:41:54,250 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 20:41:54,250 INFO  L93              Difference]: Finished difference Result 65 states and 74 transitions.
[2020-09-24 20:41:54,251 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-09-24 20:41:54,252 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 23
[2020-09-24 20:41:54,253 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 20:41:54,263 INFO  L225             Difference]: With dead ends: 65
[2020-09-24 20:41:54,264 INFO  L226             Difference]: Without dead ends: 32
[2020-09-24 20:41:54,268 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-09-24 20:41:54,288 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2020-09-24 20:41:54,309 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30.
[2020-09-24 20:41:54,310 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2020-09-24 20:41:54,312 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions.
[2020-09-24 20:41:54,314 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 23
[2020-09-24 20:41:54,314 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 20:41:54,314 INFO  L479      AbstractCegarLoop]: Abstraction has 30 states and 31 transitions.
[2020-09-24 20:41:54,315 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 20:41:54,315 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions.
[2020-09-24 20:41:54,316 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-09-24 20:41:54,316 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 20:41:54,316 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]
[2020-09-24 20:41:54,317 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 20:41:54,317 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:41:54,317 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:41:54,318 INFO  L82        PathProgramCache]: Analyzing trace with hash 1269377587, now seen corresponding path program 1 times
[2020-09-24 20:41:54,318 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:41:54,318 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766877106]
[2020-09-24 20:41:54,319 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:41:54,345 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:41:54,367 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:41:54,614 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:41:54,614 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 37
[2020-09-24 20:41:54,614 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:41:54,615 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 267
[2020-09-24 20:41:54,615 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:41:54,615 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 20:41:54,615 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-09-24 20:41:54,616 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-09-24 20:41:54,616 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 20:41:54,781 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 20:41:54,782 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:41:54,784 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:41:54,786 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 20:41:54,787 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-24 20:41:54,787 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 20:41:54,787 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 20:41:54,787 FATAL L256   erpolLogProxyWrapper]: Heuristic: BIGGEST
[2020-09-24 20:41:54,788 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 20:41:54,788 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 20:41:54,788 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 20:41:54,789 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 20:41:54,794 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 20:41:54,795 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766877106]
[2020-09-24 20:41:54,795 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 20:41:54,796 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-09-24 20:41:54,796 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581257029]
[2020-09-24 20:41:54,798 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-24 20:41:54,810 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 20:41:54,811 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-24 20:41:54,811 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-09-24 20:41:54,812 INFO  L87              Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 7 states.
[2020-09-24 20:41:55,026 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 20:41:55,026 INFO  L93              Difference]: Finished difference Result 55 states and 57 transitions.
[2020-09-24 20:41:55,027 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-09-24 20:41:55,027 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 28
[2020-09-24 20:41:55,027 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 20:41:55,030 INFO  L225             Difference]: With dead ends: 55
[2020-09-24 20:41:55,031 INFO  L226             Difference]: Without dead ends: 49
[2020-09-24 20:41:55,032 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132
[2020-09-24 20:41:55,032 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2020-09-24 20:41:55,040 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39.
[2020-09-24 20:41:55,041 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 39 states.
[2020-09-24 20:41:55,042 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions.
[2020-09-24 20:41:55,042 INFO  L78                 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 28
[2020-09-24 20:41:55,043 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 20:41:55,043 INFO  L479      AbstractCegarLoop]: Abstraction has 39 states and 40 transitions.
[2020-09-24 20:41:55,043 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-24 20:41:55,043 INFO  L276                IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions.
[2020-09-24 20:41:55,044 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-09-24 20:41:55,044 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 20:41:55,044 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]
[2020-09-24 20:41:55,045 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 20:41:55,045 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:41:55,045 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:41:55,045 INFO  L82        PathProgramCache]: Analyzing trace with hash -1258948973, now seen corresponding path program 1 times
[2020-09-24 20:41:55,045 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:41:55,046 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394396356]
[2020-09-24 20:41:55,046 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:41:55,061 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-24 20:41:55,064 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-24 20:41:55,064 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-09-24 20:41:55,070 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 20:41:55,092 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:41:55 BoogieIcfgContainer
[2020-09-24 20:41:55,092 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 20:41:55,098 INFO  L168              Benchmark]: Toolchain (without parser) took 2418.26 ms. Allocated memory was 143.1 MB in the beginning and 234.4 MB in the end (delta: 91.2 MB). Free memory was 102.4 MB in the beginning and 176.8 MB in the end (delta: -74.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB.
[2020-09-24 20:41:55,099 INFO  L168              Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 143.1 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-24 20:41:55,100 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 296.93 ms. Allocated memory is still 143.1 MB. Free memory was 101.7 MB in the beginning and 92.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB.
[2020-09-24 20:41:55,101 INFO  L168              Benchmark]: Boogie Preprocessor took 119.94 ms. Allocated memory was 143.1 MB in the beginning and 204.5 MB in the end (delta: 61.3 MB). Free memory was 92.1 MB in the beginning and 182.5 MB in the end (delta: -90.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB.
[2020-09-24 20:41:55,103 INFO  L168              Benchmark]: RCFGBuilder took 331.38 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 168.4 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB.
[2020-09-24 20:41:55,105 INFO  L168              Benchmark]: TraceAbstraction took 1660.69 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 168.4 MB in the beginning and 176.8 MB in the end (delta: -8.4 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB.
[2020-09-24 20:41:55,114 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.18 ms. Allocated memory is still 143.1 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 296.93 ms. Allocated memory is still 143.1 MB. Free memory was 101.7 MB in the beginning and 92.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 119.94 ms. Allocated memory was 143.1 MB in the beginning and 204.5 MB in the end (delta: 61.3 MB). Free memory was 92.1 MB in the beginning and 182.5 MB in the end (delta: -90.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 331.38 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 168.4 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 1660.69 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 168.4 MB in the beginning and 176.8 MB in the end (delta: -8.4 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L10]              int b;
[L13]              _Bool k=__VERIFIER_nondet_bool();
[L14]              unsigned int i,n,j;
[L15]              int a[1025];
[L17]  COND TRUE   \read(k)
[L18]              n=0
[L23]              i=0
[L24]              j=__VERIFIER_nondet_uint()
[L25]  COND FALSE  !(j > 10000)
[L28]  COND TRUE   i <= n
[L29]              i++
[L30]              j= j +2
[L28]  COND FALSE  !(i <= n)
[L33]              a[i]=0
[L34]  CALL        __VERIFIER_assert(j<1025)
[L5]   COND TRUE   !(cond)
[L6]               __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 4 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 66 SDtfs, 102 SDslu, 27 SDs, 0 SdLazy, 120 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 2 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 4945 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...