/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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/alias_of_return.c_1.i
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 10:03:53,288 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 10:03:53,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 10:03:53,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 10:03:53,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 10:03:53,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 10:03:53,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 10:03:53,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 10:03:53,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 10:03:53,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 10:03:53,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 10:03:53,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 10:03:53,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 10:03:53,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 10:03:53,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 10:03:53,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 10:03:53,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 10:03:53,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 10:03:53,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 10:03:53,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 10:03:53,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 10:03:53,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 10:03:53,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 10:03:53,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 10:03:53,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 10:03:53,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 10:03:53,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 10:03:53,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 10:03:53,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 10:03:53,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 10:03:53,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 10:03:53,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 10:03:53,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 10:03:53,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 10:03:53,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 10:03:53,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 10:03:53,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 10:03:53,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 10:03:53,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 10:03:53,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 10:03:53,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 10:03:53,424 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 10:03:53,450 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 10:03:53,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 10:03:53,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 10:03:53,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 10:03:53,452 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 10:03:53,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 10:03:53,453 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 10:03:53,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 10:03:53,453 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 10:03:53,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 10:03:53,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 10:03:53,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 10:03:53,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 10:03:53,454 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 10:03:53,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 10:03:53,455 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 10:03:53,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 10:03:53,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 10:03:53,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 10:03:53,455 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 10:03:53,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 10:03:53,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 10:03:53,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 10:03:53,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 10:03:53,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 10:03:53,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 10:03:53,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 10:03:53,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 10:03:53,457 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 10:03:53,458 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true;
[2020-09-25 10:03:53,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 10:03:53,969 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 10:03:53,973 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 10:03:53,974 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 10:03:53,975 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 10:03:53,976 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/alias_of_return.c_1.i
[2020-09-25 10:03:54,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3dc717db5/5918413c815f482daec82c51ac164572/FLAG388ff5ca6
[2020-09-25 10:03:54,584 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 10:03:54,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/alias_of_return.c_1.i
[2020-09-25 10:03:54,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3dc717db5/5918413c815f482daec82c51ac164572/FLAG388ff5ca6
[2020-09-25 10:03:54,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3dc717db5/5918413c815f482daec82c51ac164572
[2020-09-25 10:03:54,940 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 10:03:54,945 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 10:03:54,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 10:03:54,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 10:03:54,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 10:03:54,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:03:54" (1/1) ...
[2020-09-25 10:03:54,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16768517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:54, skipping insertion in model container
[2020-09-25 10:03:54,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:03:54" (1/1) ...
[2020-09-25 10:03:54,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 10:03:54,991 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 10:03:55,217 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 10:03:55,239 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 10:03:55,264 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 10:03:55,287 INFO L208 MainTranslator]: Completed translation
[2020-09-25 10:03:55,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:55 WrapperNode
[2020-09-25 10:03:55,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 10:03:55,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 10:03:55,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 10:03:55,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 10:03:55,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:55" (1/1) ...
[2020-09-25 10:03:55,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:55" (1/1) ...
[2020-09-25 10:03:55,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:55" (1/1) ...
[2020-09-25 10:03:55,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:55" (1/1) ...
[2020-09-25 10:03:55,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:55" (1/1) ...
[2020-09-25 10:03:55,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:55" (1/1) ...
[2020-09-25 10:03:55,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:55" (1/1) ...
[2020-09-25 10:03:55,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 10:03:55,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 10:03:55,422 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 10:03:55,423 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 10:03:55,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:55" (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 10:03:55,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 10:03:55,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 10:03:55,506 INFO L138 BoogieDeclarations]: Found implementation of procedure err
[2020-09-25 10:03:55,506 INFO L138 BoogieDeclarations]: Found implementation of procedure return_self
[2020-09-25 10:03:55,506 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 10:03:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 10:03:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure err
[2020-09-25 10:03:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure return_self
[2020-09-25 10:03:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 10:03:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-25 10:03:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-25 10:03:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-25 10:03:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-25 10:03:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 10:03:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 10:03:55,734 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 10:03:55,734 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-25 10:03:55,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:03:55 BoogieIcfgContainer
[2020-09-25 10:03:55,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 10:03:55,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 10:03:55,742 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 10:03:55,746 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 10:03:55,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:03:54" (1/3) ...
[2020-09-25 10:03:55,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1251c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:03:55, skipping insertion in model container
[2020-09-25 10:03:55,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:55" (2/3) ...
[2020-09-25 10:03:55,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1251c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:03:55, skipping insertion in model container
[2020-09-25 10:03:55,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:03:55" (3/3) ...
[2020-09-25 10:03:55,750 INFO L109 eAbstractionObserver]: Analyzing ICFG alias_of_return.c_1.i
[2020-09-25 10:03:55,764 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 10:03:55,775 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 10:03:55,835 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 10:03:55,870 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 10:03:55,870 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 10:03:55,870 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 10:03:55,870 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 10:03:55,871 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 10:03:55,871 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 10:03:55,871 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 10:03:55,871 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 10:03:55,899 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states.
[2020-09-25 10:03:55,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2020-09-25 10:03:55,906 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 10:03:55,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 10:03:55,908 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 10:03:55,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 10:03:55,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1015683383, now seen corresponding path program 1 times
[2020-09-25 10:03:55,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 10:03:55,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74019536]
[2020-09-25 10:03:55,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 10:03:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 10:03:56,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 10:03:56,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 10:03:56,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26
[2020-09-25 10:03:56,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 10:03:56,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241
[2020-09-25 10:03:56,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 10:03:56,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1
[2020-09-25 10:03:56,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 10:03:56,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17
[2020-09-25 10:03:56,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-09-25 10:03:56,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9
[2020-09-25 10:03:56,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 10:03:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 10:03:56,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 10:03:56,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 10:03:56,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 10:03:56,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 10:03:56,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19
[2020-09-25 10:03:56,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 10:03:56,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1
[2020-09-25 10:03:56,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 10:03:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 10:03:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 10:03:56,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-25 10:03:56,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 10:03:56,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74019536]
[2020-09-25 10:03:56,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 10:03:56,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-25 10:03:56,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92588082]
[2020-09-25 10:03:56,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-25 10:03:56,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 10:03:56,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-25 10:03:56,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-25 10:03:56,535 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 6 states.
[2020-09-25 10:03:56,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 10:03:56,711 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions.
[2020-09-25 10:03:56,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-25 10:03:56,714 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17
[2020-09-25 10:03:56,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 10:03:56,729 INFO L225 Difference]: With dead ends: 33
[2020-09-25 10:03:56,729 INFO L226 Difference]: Without dead ends: 0
[2020-09-25 10:03:56,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2020-09-25 10:03:56,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-25 10:03:56,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-25 10:03:56,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-25 10:03:56,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-25 10:03:56,765 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17
[2020-09-25 10:03:56,766 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 10:03:56,766 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-25 10:03:56,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-25 10:03:56,766 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-25 10:03:56,766 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-25 10:03:56,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 10:03:56,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-25 10:03:56,818 INFO L268 CegarLoopResult]: For program point return_selfENTRY(lines 19 22) no Hoare annotation was computed.
[2020-09-25 10:03:56,818 INFO L268 CegarLoopResult]: For program point return_selfFINAL(lines 19 22) no Hoare annotation was computed.
[2020-09-25 10:03:56,818 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed.
[2020-09-25 10:03:56,818 INFO L268 CegarLoopResult]: For program point return_selfEXIT(lines 19 22) no Hoare annotation was computed.
[2020-09-25 10:03:56,819 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed.
[2020-09-25 10:03:56,819 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed.
[2020-09-25 10:03:56,819 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed.
[2020-09-25 10:03:56,819 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|))
[2020-09-25 10:03:56,820 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 10:03:56,820 INFO L268 CegarLoopResult]: For program point errErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed.
[2020-09-25 10:03:56,820 INFO L268 CegarLoopResult]: For program point errEXIT(lines 15 16) no Hoare annotation was computed.
[2020-09-25 10:03:56,820 INFO L271 CegarLoopResult]: At program point errENTRY(lines 15 16) the Hoare annotation is: true
[2020-09-25 10:03:56,821 INFO L268 CegarLoopResult]: For program point errFINAL(lines 15 16) no Hoare annotation was computed.
[2020-09-25 10:03:56,821 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 10:03:56,821 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-09-25 10:03:56,821 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-09-25 10:03:56,821 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-09-25 10:03:56,822 INFO L268 CegarLoopResult]: For program point L37-4(line 37) no Hoare annotation was computed.
[2020-09-25 10:03:56,822 INFO L268 CegarLoopResult]: For program point L37-5(line 37) no Hoare annotation was computed.
[2020-09-25 10:03:56,822 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 24 38) the Hoare annotation is: (= |old(#valid)| |#valid|)
[2020-09-25 10:03:56,822 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed.
[2020-09-25 10:03:56,822 INFO L268 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed.
[2020-09-25 10:03:56,823 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed.
[2020-09-25 10:03:56,823 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed.
[2020-09-25 10:03:56,823 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 24 38) no Hoare annotation was computed.
[2020-09-25 10:03:56,823 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 24 38) no Hoare annotation was computed.
[2020-09-25 10:03:56,824 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed.
[2020-09-25 10:03:56,824 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed.
[2020-09-25 10:03:56,824 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed.
[2020-09-25 10:03:56,824 INFO L264 CegarLoopResult]: At program point L37-2(line 37) the Hoare annotation is: false
[2020-09-25 10:03:56,824 INFO L268 CegarLoopResult]: For program point L35-1(line 35) no Hoare annotation was computed.
[2020-09-25 10:03:56,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:03:56 BoogieIcfgContainer
[2020-09-25 10:03:56,833 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 10:03:56,838 INFO L168 Benchmark]: Toolchain (without parser) took 1894.15 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.4 MB in the beginning and 119.4 MB in the end (delta: -17.0 MB). Peak memory consumption was 46.4 MB. Max. memory is 7.1 GB.
[2020-09-25 10:03:56,839 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-25 10:03:56,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.81 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 92.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB.
[2020-09-25 10:03:56,842 INFO L168 Benchmark]: Boogie Preprocessor took 131.90 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 92.5 MB in the beginning and 180.8 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB.
[2020-09-25 10:03:56,843 INFO L168 Benchmark]: RCFGBuilder took 318.06 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 166.5 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB.
[2020-09-25 10:03:56,844 INFO L168 Benchmark]: TraceAbstraction took 1091.94 ms. Allocated memory is still 202.4 MB. Free memory was 166.5 MB in the beginning and 119.4 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB.
[2020-09-25 10:03:56,849 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.17 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 343.81 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 92.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 131.90 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 92.5 MB in the beginning and 180.8 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 318.06 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 166.5 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1091.94 ms. Allocated memory is still 202.4 MB. Free memory was 166.5 MB in the beginning and 119.4 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 16]: 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 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 10 SDslu, 40 SDs, 0 SdLazy, 30 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 0.4s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 624 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...