/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/BallRajamani-SPIN2000-Fig1.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 02:00:27,005 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 02:00:27,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 02:00:27,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 02:00:27,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 02:00:27,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 02:00:27,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 02:00:27,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 02:00:27,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 02:00:27,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 02:00:27,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 02:00:27,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 02:00:27,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 02:00:27,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 02:00:27,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 02:00:27,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 02:00:27,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 02:00:27,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 02:00:27,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 02:00:27,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 02:00:27,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 02:00:27,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 02:00:27,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 02:00:27,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 02:00:27,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 02:00:27,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 02:00:27,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 02:00:27,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 02:00:27,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 02:00:27,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 02:00:27,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 02:00:27,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 02:00:27,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 02:00:27,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 02:00:27,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 02:00:27,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 02:00:27,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 02:00:27,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 02:00:27,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 02:00:27,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 02:00:27,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 02:00:27,128 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
[2020-09-25 02:00:27,175 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 02:00:27,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 02:00:27,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 02:00:27,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 02:00:27,178 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 02:00:27,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 02:00:27,179 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 02:00:27,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 02:00:27,180 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 02:00:27,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 02:00:27,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 02:00:27,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 02:00:27,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 02:00:27,182 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 02:00:27,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 02:00:27,182 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 02:00:27,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 02:00:27,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 02:00:27,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 02:00:27,183 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 02:00:27,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 02:00:27,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 02:00:27,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 02:00:27,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 02:00:27,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 02:00:27,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 02:00:27,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 02:00:27,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 02:00:27,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 02:00:27,185 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;
[2020-09-25 02:00:27,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 02:00:27,625 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 02:00:27,629 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 02:00:27,631 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 02:00:27,631 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 02:00:27,632 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/BallRajamani-SPIN2000-Fig1.c
[2020-09-25 02:00:27,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bece52b9/9c84abf0ae914f66b6b661ea1b3ac5f3/FLAG1ce59464d
[2020-09-25 02:00:28,213 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 02:00:28,214 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/BallRajamani-SPIN2000-Fig1.c
[2020-09-25 02:00:28,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bece52b9/9c84abf0ae914f66b6b661ea1b3ac5f3/FLAG1ce59464d
[2020-09-25 02:00:28,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bece52b9/9c84abf0ae914f66b6b661ea1b3ac5f3
[2020-09-25 02:00:28,589 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 02:00:28,596 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 02:00:28,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 02:00:28,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 02:00:28,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 02:00:28,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:00:28" (1/1) ...
[2020-09-25 02:00:28,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60f79fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:28, skipping insertion in model container
[2020-09-25 02:00:28,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:00:28" (1/1) ...
[2020-09-25 02:00:28,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 02:00:28,645 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 02:00:28,846 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 02:00:28,852 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 02:00:28,869 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 02:00:28,884 INFO L208 MainTranslator]: Completed translation
[2020-09-25 02:00:28,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:28 WrapperNode
[2020-09-25 02:00:28,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 02:00:28,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 02:00:28,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 02:00:28,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 02:00:28,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:28" (1/1) ...
[2020-09-25 02:00:28,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:28" (1/1) ...
[2020-09-25 02:00:28,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:28" (1/1) ...
[2020-09-25 02:00:28,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:28" (1/1) ...
[2020-09-25 02:00:28,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:28" (1/1) ...
[2020-09-25 02:00:28,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:28" (1/1) ...
[2020-09-25 02:00:28,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:28" (1/1) ...
[2020-09-25 02:00:28,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 02:00:28,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 02:00:28,913 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 02:00:28,913 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 02:00:28,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:28" (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
[2020-09-25 02:00:29,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 02:00:29,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 02:00:29,067 INFO L138 BoogieDeclarations]: Found implementation of procedure A
[2020-09-25 02:00:29,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 02:00:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 02:00:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-25 02:00:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure A
[2020-09-25 02:00:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 02:00:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 02:00:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 02:00:29,286 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 02:00:29,287 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-25 02:00:29,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:00:29 BoogieIcfgContainer
[2020-09-25 02:00:29,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 02:00:29,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 02:00:29,309 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 02:00:29,319 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 02:00:29,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:00:28" (1/3) ...
[2020-09-25 02:00:29,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a07c9a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:00:29, skipping insertion in model container
[2020-09-25 02:00:29,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:28" (2/3) ...
[2020-09-25 02:00:29,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a07c9a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:00:29, skipping insertion in model container
[2020-09-25 02:00:29,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:00:29" (3/3) ...
[2020-09-25 02:00:29,331 INFO L109 eAbstractionObserver]: Analyzing ICFG BallRajamani-SPIN2000-Fig1.c
[2020-09-25 02:00:29,358 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 02:00:29,378 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 02:00:29,401 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 02:00:29,430 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 02:00:29,431 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 02:00:29,431 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 02:00:29,431 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 02:00:29,431 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 02:00:29,431 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 02:00:29,432 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 02:00:29,432 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 02:00:29,451 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states.
[2020-09-25 02:00:29,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2020-09-25 02:00:29,459 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 02:00:29,460 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 02:00:29,460 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 02:00:29,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 02:00:29,467 INFO L82 PathProgramCache]: Analyzing trace with hash 31169137, now seen corresponding path program 1 times
[2020-09-25 02:00:29,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 02:00:29,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560443685]
[2020-09-25 02:00:29,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 02:00:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:00:29,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:00:29,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:00:30,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:00:30,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40
[2020-09-25 02:00:30,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 02:00:30,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 669
[2020-09-25 02:00:30,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:00:30,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 02:00:30,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28
[2020-09-25 02:00:30,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-09-25 02:00:30,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-25 02:00:30,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 02:00:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:00:30,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:00:30,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:00:30,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-25 02:00:30,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:00:30,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 02:00:30,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:00:30,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 02:00:30,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:00:30,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 02:00:30,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 02:00:30,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-25 02:00:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:00:30,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:00:30,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:00:30,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-25 02:00:30,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:00:30,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 02:00:30,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:00:30,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 02:00:30,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:00:30,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 02:00:30,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 02:00:30,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2020-09-25 02:00:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:00:30,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:00:30,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:00:30,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-25 02:00:30,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:00:30,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18
[2020-09-25 02:00:30,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:00:30,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 02:00:30,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:00:30,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-25 02:00:30,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 02:00:30,487 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-09-25 02:00:30,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560443685]
[2020-09-25 02:00:30,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 02:00:30,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-25 02:00:30,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377724391]
[2020-09-25 02:00:30,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-25 02:00:30,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 02:00:30,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-25 02:00:30,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-25 02:00:30,517 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 6 states.
[2020-09-25 02:00:30,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 02:00:30,713 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions.
[2020-09-25 02:00:30,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2020-09-25 02:00:30,716 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29
[2020-09-25 02:00:30,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 02:00:30,729 INFO L225 Difference]: With dead ends: 60
[2020-09-25 02:00:30,730 INFO L226 Difference]: Without dead ends: 29
[2020-09-25 02:00:30,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90
[2020-09-25 02:00:30,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2020-09-25 02:00:30,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2020-09-25 02:00:30,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states.
[2020-09-25 02:00:30,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions.
[2020-09-25 02:00:30,788 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 29
[2020-09-25 02:00:30,788 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 02:00:30,789 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions.
[2020-09-25 02:00:30,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-25 02:00:30,789 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions.
[2020-09-25 02:00:30,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2020-09-25 02:00:30,792 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 02:00:30,793 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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]
[2020-09-25 02:00:30,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 02:00:30,793 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 02:00:30,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 02:00:30,794 INFO L82 PathProgramCache]: Analyzing trace with hash 812451921, now seen corresponding path program 1 times
[2020-09-25 02:00:30,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 02:00:30,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065972244]
[2020-09-25 02:00:30,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 02:00:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-25 02:00:30,818 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-25 02:00:30,818 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-25 02:00:30,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 02:00:30,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:00:30 BoogieIcfgContainer
[2020-09-25 02:00:30,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 02:00:30,850 INFO L168 Benchmark]: Toolchain (without parser) took 2257.48 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.8 MB in the beginning and 95.5 MB in the end (delta: 7.3 MB). Peak memory consumption was 70.7 MB. Max. memory is 7.1 GB.
[2020-09-25 02:00:30,851 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-09-25 02:00:30,852 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.62 ms. Allocated memory is still 140.5 MB. Free memory was 102.2 MB in the beginning and 92.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB.
[2020-09-25 02:00:30,853 INFO L168 Benchmark]: Boogie Preprocessor took 26.87 ms. Allocated memory is still 140.5 MB. Free memory was 92.7 MB in the beginning and 91.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB.
[2020-09-25 02:00:30,854 INFO L168 Benchmark]: RCFGBuilder took 381.58 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 91.2 MB in the beginning and 170.7 MB in the end (delta: -79.6 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB.
[2020-09-25 02:00:30,855 INFO L168 Benchmark]: TraceAbstraction took 1537.11 ms. Allocated memory is still 203.9 MB. Free memory was 170.7 MB in the beginning and 95.5 MB in the end (delta: 75.2 MB). Peak memory consumption was 75.2 MB. Max. memory is 7.1 GB.
[2020-09-25 02:00:30,860 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 288.62 ms. Allocated memory is still 140.5 MB. Free memory was 102.2 MB in the beginning and 92.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 26.87 ms. Allocated memory is still 140.5 MB. Free memory was 92.7 MB in the beginning and 91.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 381.58 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 91.2 MB in the beginning and 170.7 MB in the end (delta: -79.6 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1537.11 ms. Allocated memory is still 203.9 MB. Free memory was 170.7 MB in the beginning and 95.5 MB in the end (delta: 75.2 MB). Peak memory consumption was 75.2 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 31]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L14] int g;
[L26] int g = __VERIFIER_nondet_int();
[L27] int h = !g;
[L28] CALL A(g,h)
[L17] COND TRUE \read(a1)
[L18] CALL A(a2,a1)
[L17] COND FALSE !(\read(a1))
[L20] g = a2
[L18] RET A(a2,a1)
[L28] RET A(g,h)
[L29] CALL A(g,h)
[L17] COND TRUE \read(a1)
[L18] CALL A(a2,a1)
[L17] COND FALSE !(\read(a1))
[L20] g = a2
[L18] RET A(a2,a1)
[L29] RET A(g,h)
[L30] COND TRUE \read(g)
[L31] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 4, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 21 SDslu, 77 SDs, 0 SdLazy, 44 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 2464 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 6/6 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...