/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=DEEPEST --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/test13.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-25 00:58:04,425 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-25 00:58:04,430 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 00:58:04,478 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 00:58:04,479 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 00:58:04,490 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 00:58:04,492 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 00:58:04,496 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 00:58:04,499 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 00:58:04,503 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 00:58:04,504 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 00:58:04,506 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 00:58:04,506 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 00:58:04,509 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 00:58:04,513 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 00:58:04,515 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 00:58:04,517 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 00:58:04,518 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 00:58:04,520 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 00:58:04,530 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 00:58:04,532 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 00:58:04,534 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 00:58:04,535 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 00:58:04,536 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 00:58:04,539 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 00:58:04,539 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 00:58:04,539 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 00:58:04,542 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 00:58:04,543 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 00:58:04,544 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 00:58:04,544 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 00:58:04,545 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 00:58:04,546 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 00:58:04,547 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 00:58:04,548 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 00:58:04,548 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 00:58:04,549 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 00:58:04,549 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 00:58:04,550 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 00:58:04,551 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 00:58:04,552 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 00:58:04,553 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 00:58:04,599 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-25 00:58:04,600 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 00:58:04,602 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 00:58:04,602 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-25 00:58:04,603 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-25 00:58:04,603 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 00:58:04,603 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-25 00:58:04,604 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-25 00:58:04,604 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-25 00:58:04,604 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-25 00:58:04,605 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 00:58:04,606 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 00:58:04,606 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 00:58:04,606 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-25 00:58:04,606 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-25 00:58:04,607 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-25 00:58:04,607 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-25 00:58:04,607 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 00:58:04,607 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-25 00:58:04,608 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-25 00:58:04,608 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-25 00:58:04,608 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 00:58:04,608 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 00:58:04,608 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 00:58:04,609 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 00:58:04,609 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-25 00:58:04,609 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 00:58:04,609 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 00:58:04,609 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-25 00:58:04,610 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true;
[2020-09-25 00:58:05,079 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 00:58:05,103 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 00:58:05,107 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 00:58:05,110 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-25 00:58:05,111 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-25 00:58:05,112 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test13.c
[2020-09-25 00:58:05,191 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a581cb3ce/2fa0f0fb335a4d73bafd67096e317499/FLAGe5f5395b9
[2020-09-25 00:58:05,693 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-25 00:58:05,694 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test13.c
[2020-09-25 00:58:05,703 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a581cb3ce/2fa0f0fb335a4d73bafd67096e317499/FLAGe5f5395b9
[2020-09-25 00:58:06,050 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a581cb3ce/2fa0f0fb335a4d73bafd67096e317499
[2020-09-25 00:58:06,062 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 00:58:06,067 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 00:58:06,068 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 00:58:06,068 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 00:58:06,073 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 00:58:06,074 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:58:06" (1/1) ...
[2020-09-25 00:58:06,080 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@424943e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:06, skipping insertion in model container
[2020-09-25 00:58:06,081 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:58:06" (1/1) ...
[2020-09-25 00:58:06,089 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-25 00:58:06,112 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-25 00:58:06,332 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-25 00:58:06,341 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-25 00:58:06,361 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-25 00:58:06,391 INFO  L208         MainTranslator]: Completed translation
[2020-09-25 00:58:06,391 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:06 WrapperNode
[2020-09-25 00:58:06,392 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 00:58:06,393 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 00:58:06,393 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 00:58:06,393 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 00:58:06,490 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:06" (1/1) ...
[2020-09-25 00:58:06,490 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:06" (1/1) ...
[2020-09-25 00:58:06,499 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:06" (1/1) ...
[2020-09-25 00:58:06,499 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:06" (1/1) ...
[2020-09-25 00:58:06,504 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:06" (1/1) ...
[2020-09-25 00:58:06,507 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:06" (1/1) ...
[2020-09-25 00:58:06,508 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:06" (1/1) ...
[2020-09-25 00:58:06,510 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 00:58:06,510 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 00:58:06,510 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 00:58:06,510 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-25 00:58:06,514 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:06" (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 00:58:06,593 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 00:58:06,594 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 00:58:06,594 INFO  L138     BoogieDeclarations]: Found implementation of procedure check
[2020-09-25 00:58:06,594 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 00:58:06,594 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 00:58:06,594 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2020-09-25 00:58:06,595 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-25 00:58:06,595 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 00:58:06,595 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-25 00:58:06,595 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-09-25 00:58:06,595 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 00:58:06,596 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-25 00:58:06,596 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-25 00:58:06,596 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-25 00:58:06,828 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 00:58:06,828 INFO  L295             CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-25 00:58:06,833 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:58:06 BoogieIcfgContainer
[2020-09-25 00:58:06,834 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 00:58:06,836 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 00:58:06,836 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 00:58:06,841 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-25 00:58:06,841 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:58:06" (1/3) ...
[2020-09-25 00:58:06,842 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd5ba47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:58:06, skipping insertion in model container
[2020-09-25 00:58:06,843 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:06" (2/3) ...
[2020-09-25 00:58:06,843 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd5ba47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:58:06, skipping insertion in model container
[2020-09-25 00:58:06,844 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:58:06" (3/3) ...
[2020-09-25 00:58:06,846 INFO  L109   eAbstractionObserver]: Analyzing ICFG test13.c
[2020-09-25 00:58:06,858 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 00:58:06,869 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 00:58:06,895 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 00:58:06,928 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-25 00:58:06,928 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-25 00:58:06,928 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 00:58:06,929 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 00:58:06,929 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 00:58:06,929 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-25 00:58:06,931 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 00:58:06,931 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 00:58:06,956 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states.
[2020-09-25 00:58:06,964 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-09-25 00:58:06,964 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 00:58:06,965 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 00:58:06,966 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 00:58:06,972 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 00:58:06,972 INFO  L82        PathProgramCache]: Analyzing trace with hash 437013475, now seen corresponding path program 1 times
[2020-09-25 00:58:06,981 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 00:58:06,982 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837497075]
[2020-09-25 00:58:06,982 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 00:58:07,131 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 00:58:07,171 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 00:58:07,494 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 00:58:07,495 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-09-25 00:58:07,495 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 00:58:07,495 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 357
[2020-09-25 00:58:07,498 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 00:58:07,498 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-25 00:58:07,498 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 13
[2020-09-25 00:58:07,498 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 13
[2020-09-25 00:58:07,499 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-25 00:58:07,694 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 00:58:07,711 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 00:58:07,728 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 00:58:07,776 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 00:58:07,777 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 17
[2020-09-25 00:58:07,777 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 00:58:07,777 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 64
[2020-09-25 00:58:07,778 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 00:58:07,778 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 00:58:07,778 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 00:58:07,779 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-25 00:58:07,779 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 00:58:07,808 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 00:58:07,809 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837497075]
[2020-09-25 00:58:07,813 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 00:58:07,814 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-09-25 00:58:07,815 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491519020]
[2020-09-25 00:58:07,821 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-09-25 00:58:07,822 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 00:58:07,840 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-09-25 00:58:07,841 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2020-09-25 00:58:07,844 INFO  L87              Difference]: Start difference. First operand 26 states. Second operand 7 states.
[2020-09-25 00:58:08,190 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 00:58:08,190 INFO  L93              Difference]: Finished difference Result 33 states and 32 transitions.
[2020-09-25 00:58:08,191 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-09-25 00:58:08,193 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 18
[2020-09-25 00:58:08,193 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 00:58:08,202 INFO  L225             Difference]: With dead ends: 33
[2020-09-25 00:58:08,202 INFO  L226             Difference]: Without dead ends: 0
[2020-09-25 00:58:08,207 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110
[2020-09-25 00:58:08,223 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-25 00:58:08,229 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-25 00:58:08,230 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-25 00:58:08,231 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-25 00:58:08,232 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18
[2020-09-25 00:58:08,232 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 00:58:08,232 INFO  L479      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-25 00:58:08,233 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-09-25 00:58:08,233 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-25 00:58:08,233 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-25 00:58:08,233 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 00:58:08,236 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-25 00:58:08,369 INFO  L268        CegarLoopResult]: For program point  L-1(line -1)  no Hoare annotation was computed.
[2020-09-25 00:58:08,370 INFO  L268        CegarLoopResult]: For program point  L15(line 15)  no Hoare annotation was computed.
[2020-09-25 00:58:08,370 INFO  L268        CegarLoopResult]: For program point  L-1-1(line -1)  no Hoare annotation was computed.
[2020-09-25 00:58:08,370 INFO  L268        CegarLoopResult]: For program point  L14(line 14)  no Hoare annotation was computed.
[2020-09-25 00:58:08,370 INFO  L268        CegarLoopResult]: For program point  ULTIMATE.initFINAL(line -1)  no Hoare annotation was computed.
[2020-09-25 00:58:08,370 INFO  L268        CegarLoopResult]: For program point  L14-1(line 14)  no Hoare annotation was computed.
[2020-09-25 00:58:08,370 INFO  L268        CegarLoopResult]: For program point  L14-2(line 14)  no Hoare annotation was computed.
[2020-09-25 00:58:08,371 INFO  L268        CegarLoopResult]: For program point  L14-3(line 14)  no Hoare annotation was computed.
[2020-09-25 00:58:08,371 INFO  L268        CegarLoopResult]: For program point  L14-4(line 14)  no Hoare annotation was computed.
[2020-09-25 00:58:08,371 INFO  L264        CegarLoopResult]: At program point  ULTIMATE.initENTRY(line -1)  the Hoare annotation is:  (and (= ~pa~0.base |old(~pa~0.base)|) (= ~pb~0.base |old(~pb~0.base)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= ~pa~0.offset |old(~pa~0.offset)|) (= |old(#length)| |#length|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= ~pb~0.offset |old(~pb~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|))
[2020-09-25 00:58:08,371 INFO  L268        CegarLoopResult]: For program point  ULTIMATE.initEXIT(line -1)  no Hoare annotation was computed.
[2020-09-25 00:58:08,372 INFO  L268        CegarLoopResult]: For program point  ULTIMATE.startEXIT(line -1)  no Hoare annotation was computed.
[2020-09-25 00:58:08,372 INFO  L264        CegarLoopResult]: At program point  L-1(line -1)  the Hoare annotation is:  (and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|))
[2020-09-25 00:58:08,372 INFO  L271        CegarLoopResult]: At program point  ULTIMATE.startENTRY(line -1)  the Hoare annotation is:  true
[2020-09-25 00:58:08,372 INFO  L268        CegarLoopResult]: For program point  ULTIMATE.startFINAL(line -1)  no Hoare annotation was computed.
[2020-09-25 00:58:08,372 INFO  L271        CegarLoopResult]: At program point  mainENTRY(lines 17 20)  the Hoare annotation is:  true
[2020-09-25 00:58:08,372 INFO  L268        CegarLoopResult]: For program point  mainFINAL(lines 17 20)  no Hoare annotation was computed.
[2020-09-25 00:58:08,373 INFO  L268        CegarLoopResult]: For program point  mainEXIT(lines 17 20)  no Hoare annotation was computed.
[2020-09-25 00:58:08,373 INFO  L268        CegarLoopResult]: For program point  L18(line 18)  no Hoare annotation was computed.
[2020-09-25 00:58:08,373 INFO  L271        CegarLoopResult]: At program point  checkENTRY(lines 4 12)  the Hoare annotation is:  true
[2020-09-25 00:58:08,373 INFO  L268        CegarLoopResult]: For program point  checkErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10)  no Hoare annotation was computed.
[2020-09-25 00:58:08,373 INFO  L268        CegarLoopResult]: For program point  checkFINAL(lines 4 12)  no Hoare annotation was computed.
[2020-09-25 00:58:08,374 INFO  L264        CegarLoopResult]: At program point  L6(lines 4 12)  the Hoare annotation is:  (or (not (= |~#a~0.offset| ~pa~0.offset)) (not (= |~#a~0.base| ~pa~0.base)) (not (= |check_#in~b.offset| |check_#in~a.offset|)) (not (= |check_#in~a.base| |check_#in~b.base|)))
[2020-09-25 00:58:08,374 INFO  L268        CegarLoopResult]: For program point  L5(lines 5 7)  no Hoare annotation was computed.
[2020-09-25 00:58:08,374 INFO  L268        CegarLoopResult]: For program point  L4(lines 4 12)  no Hoare annotation was computed.
[2020-09-25 00:58:08,374 INFO  L268        CegarLoopResult]: For program point  checkEXIT(lines 4 12)  no Hoare annotation was computed.
[2020-09-25 00:58:08,395 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:58:08 BoogieIcfgContainer
[2020-09-25 00:58:08,395 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 00:58:08,399 INFO  L168              Benchmark]: Toolchain (without parser) took 2333.76 ms. Allocated memory was 147.8 MB in the beginning and 234.4 MB in the end (delta: 86.5 MB). Free memory was 103.0 MB in the beginning and 175.6 MB in the end (delta: -72.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB.
[2020-09-25 00:58:08,400 INFO  L168              Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 147.8 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB.
[2020-09-25 00:58:08,401 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 323.96 ms. Allocated memory is still 147.8 MB. Free memory was 102.4 MB in the beginning and 92.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB.
[2020-09-25 00:58:08,403 INFO  L168              Benchmark]: Boogie Preprocessor took 117.30 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 92.9 MB in the beginning and 183.5 MB in the end (delta: -90.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB.
[2020-09-25 00:58:08,404 INFO  L168              Benchmark]: RCFGBuilder took 323.87 ms. Allocated memory is still 205.0 MB. Free memory was 183.5 MB in the beginning and 168.9 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB.
[2020-09-25 00:58:08,405 INFO  L168              Benchmark]: TraceAbstraction took 1560.01 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 168.9 MB in the beginning and 175.6 MB in the end (delta: -6.7 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB.
[2020-09-25 00:58:08,409 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.23 ms. Allocated memory is still 147.8 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 323.96 ms. Allocated memory is still 147.8 MB. Free memory was 102.4 MB in the beginning and 92.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 117.30 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 92.9 MB in the beginning and 183.5 MB in the end (delta: -90.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 323.87 ms. Allocated memory is still 205.0 MB. Free memory was 183.5 MB in the beginning and 168.9 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 1560.01 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 168.9 MB in the beginning and 175.6 MB in the end (delta: -6.7 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable
    For all program executions holds that call of __VERIFIER_error() unreachable at this location
  - AllSpecificationsHoldResult: All specifications hold
    1 specifications checked. All of them hold
  - InvariantResult [Line: 4]: Loop Invariant
    Derived loop invariant: ((!(a == pa) || !(a == pa)) || !(b == a)) || !(a == b)
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 4 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 22 SDslu, 52 SDs, 0 SdLazy, 31 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 64 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 116 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1717 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...