/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.i


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 19:35:03,468 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 19:35:03,472 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 19:35:03,499 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 19:35:03,499 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 19:35:03,500 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 19:35:03,502 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 19:35:03,504 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 19:35:03,506 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 19:35:03,507 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-09-24 19:35:03,510 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 19:35:03,511 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 19:35:03,513 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 19:35:03,514 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 19:35:03,515 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 19:35:03,516 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 19:35:03,518 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 19:35:03,521 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 19:35:03,522 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 19:35:03,524 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 19:35:03,525 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 19:35:03,526 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 19:35:03,529 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 19:35:03,529 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 19:35:03,529 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 19:35:03,531 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 19:35:03,531 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 19:35:03,532 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 19:35:03,532 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 19:35:03,533 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 19:35:03,534 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 19:35:03,535 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 19:35:03,537 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 19:35:03,537 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2020-09-24 19:35:03,538 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-09-24 19:35:03,540 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 19:35:03,541 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-09-24 19:35:03,569 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 19:35:03,569 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 19:35:03,570 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 19:35:03,570 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 19:35:03,571 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 19:35:03,571 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 19:35:03,571 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 19:35:03,571 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 19:35:03,571 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 19:35:03,572 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 19:35:03,572 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 19:35:03,572 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 19:35:03,572 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 19:35:03,572 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 19:35:03,573 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 19:35:03,573 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 19:35:03,573 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 19:35:03,573 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 19:35:03,573 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 19:35:03,574 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 19:35:03,574 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 19:35:03,574 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 19:35:03,574 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 19:35:03,575 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 19:35:03,575 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 19:35:03,575 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 19:35:03,575 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 19:35:03,575 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 19:35:03,576 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 19:35:03,576 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true;
[2020-09-24 19:35:04,101 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 19:35:04,128 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 19:35:04,133 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 19:35:04,135 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 19:35:04,137 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 19:35:04,138 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.i
[2020-09-24 19:35:04,221 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44fff3dce/e930024bf5424ac88f860f1a565c9929/FLAG1c49306e0
[2020-09-24 19:35:04,708 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 19:35:04,709 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gsv2008.i
[2020-09-24 19:35:04,716 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44fff3dce/e930024bf5424ac88f860f1a565c9929/FLAG1c49306e0
[2020-09-24 19:35:05,065 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44fff3dce/e930024bf5424ac88f860f1a565c9929
[2020-09-24 19:35:05,079 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 19:35:05,087 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 19:35:05,091 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 19:35:05,091 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 19:35:05,096 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 19:35:05,097 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:35:05" (1/1) ...
[2020-09-24 19:35:05,103 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79e14926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:05, skipping insertion in model container
[2020-09-24 19:35:05,103 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:35:05" (1/1) ...
[2020-09-24 19:35:05,113 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 19:35:05,134 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 19:35:05,357 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 19:35:05,362 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 19:35:05,381 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 19:35:05,399 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 19:35:05,400 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:05 WrapperNode
[2020-09-24 19:35:05,400 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 19:35:05,401 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 19:35:05,401 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 19:35:05,401 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 19:35:05,415 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:05" (1/1) ...
[2020-09-24 19:35:05,415 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:05" (1/1) ...
[2020-09-24 19:35:05,421 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:05" (1/1) ...
[2020-09-24 19:35:05,421 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:05" (1/1) ...
[2020-09-24 19:35:05,425 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:05" (1/1) ...
[2020-09-24 19:35:05,436 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:05" (1/1) ...
[2020-09-24 19:35:05,437 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:05" (1/1) ...
[2020-09-24 19:35:05,529 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 19:35:05,530 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 19:35:05,530 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 19:35:05,530 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 19:35:05,534 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:05" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 19:35:05,609 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 19:35:05,609 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 19:35:05,610 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-09-24 19:35:05,610 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-24 19:35:05,610 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 19:35:05,610 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 19:35:05,611 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-09-24 19:35:05,611 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-09-24 19:35:05,611 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-24 19:35:05,611 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 19:35:05,611 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 19:35:05,612 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 19:35:05,612 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 19:35:05,870 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 19:35:05,871 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-24 19:35:05,877 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:35:05 BoogieIcfgContainer
[2020-09-24 19:35:05,877 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 19:35:05,881 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 19:35:05,881 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 19:35:05,885 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 19:35:05,885 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:35:05" (1/3) ...
[2020-09-24 19:35:05,886 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746bb246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:35:05, skipping insertion in model container
[2020-09-24 19:35:05,887 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:35:05" (2/3) ...
[2020-09-24 19:35:05,887 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746bb246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:35:05, skipping insertion in model container
[2020-09-24 19:35:05,887 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:35:05" (3/3) ...
[2020-09-24 19:35:05,889 INFO  L109   eAbstractionObserver]: Analyzing ICFG gsv2008.i
[2020-09-24 19:35:05,913 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 19:35:05,925 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 19:35:05,945 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 19:35:05,975 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 19:35:05,975 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 19:35:05,975 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 19:35:05,975 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 19:35:05,976 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 19:35:05,976 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 19:35:05,977 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 19:35:05,977 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 19:35:06,002 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states.
[2020-09-24 19:35:06,010 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-09-24 19:35:06,010 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 19:35:06,011 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 19:35:06,012 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 19:35:06,018 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 19:35:06,019 INFO  L82        PathProgramCache]: Analyzing trace with hash 2104509233, now seen corresponding path program 1 times
[2020-09-24 19:35:06,028 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 19:35:06,029 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503899644]
[2020-09-24 19:35:06,029 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 19:35:06,139 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 19:35:06,159 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:35:06,215 FATAL L256   erpolLogProxyWrapper]: Timeout: 1000
[2020-09-24 19:35:06,215 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-24 19:35:06,216 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 19:35:06,216 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 71
[2020-09-24 19:35:06,218 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 19:35:06,218 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 19:35:06,219 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 18
[2020-09-24 19:35:06,219 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 19:35:06,219 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-24 19:35:06,251 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 19:35:06,252 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 19:35:06,255 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:35:06,257 FATAL L256   erpolLogProxyWrapper]: Timeout: 1000
[2020-09-24 19:35:06,257 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 19:35:06,258 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 19:35:06,258 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 19:35:06,258 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 19:35:06,258 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 19:35:06,259 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 19:35:06,259 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 19:35:06,259 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 19:35:06,267 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 19:35:06,268 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503899644]
[2020-09-24 19:35:06,273 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 19:35:06,274 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-09-24 19:35:06,275 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001088988]
[2020-09-24 19:35:06,285 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-09-24 19:35:06,286 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 19:35:06,304 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-09-24 19:35:06,306 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-09-24 19:35:06,310 INFO  L87              Difference]: Start difference. First operand 29 states. Second operand 2 states.
[2020-09-24 19:35:06,347 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 19:35:06,347 INFO  L93              Difference]: Finished difference Result 41 states and 45 transitions.
[2020-09-24 19:35:06,348 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2020-09-24 19:35:06,349 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 16
[2020-09-24 19:35:06,350 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 19:35:06,362 INFO  L225             Difference]: With dead ends: 41
[2020-09-24 19:35:06,362 INFO  L226             Difference]: Without dead ends: 21
[2020-09-24 19:35:06,367 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-09-24 19:35:06,387 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2020-09-24 19:35:06,409 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21.
[2020-09-24 19:35:06,411 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 21 states.
[2020-09-24 19:35:06,412 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions.
[2020-09-24 19:35:06,414 INFO  L78                 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 16
[2020-09-24 19:35:06,415 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 19:35:06,415 INFO  L479      AbstractCegarLoop]: Abstraction has 21 states and 21 transitions.
[2020-09-24 19:35:06,415 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-09-24 19:35:06,415 INFO  L276                IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions.
[2020-09-24 19:35:06,416 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-09-24 19:35:06,416 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 19:35:06,417 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 19:35:06,417 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 19:35:06,417 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 19:35:06,418 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 19:35:06,418 INFO  L82        PathProgramCache]: Analyzing trace with hash 2097121065, now seen corresponding path program 1 times
[2020-09-24 19:35:06,419 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 19:35:06,419 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406595550]
[2020-09-24 19:35:06,419 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 19:35:06,432 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 19:35:06,441 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:35:06,456 FATAL L256   erpolLogProxyWrapper]: Timeout: 1000
[2020-09-24 19:35:06,456 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-24 19:35:06,457 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 19:35:06,457 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 23
[2020-09-24 19:35:06,457 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 19:35:06,458 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 19:35:06,458 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 13
[2020-09-24 19:35:06,458 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-24 19:35:06,458 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 19:35:06,496 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 19:35:06,498 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 19:35:06,500 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:35:06,502 FATAL L256   erpolLogProxyWrapper]: Timeout: 1000
[2020-09-24 19:35:06,502 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 19:35:06,502 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 19:35:06,503 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-09-24 19:35:06,503 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 19:35:06,503 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 19:35:06,504 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 19:35:06,504 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 19:35:06,504 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 19:35:06,509 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 19:35:06,510 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406595550]
[2020-09-24 19:35:06,510 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 19:35:06,510 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 19:35:06,511 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122242478]
[2020-09-24 19:35:06,513 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 19:35:06,513 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 19:35:06,513 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 19:35:06,514 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 19:35:06,514 INFO  L87              Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 3 states.
[2020-09-24 19:35:06,537 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 19:35:06,538 INFO  L93              Difference]: Finished difference Result 28 states and 28 transitions.
[2020-09-24 19:35:06,539 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-09-24 19:35:06,539 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 16
[2020-09-24 19:35:06,539 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 19:35:06,540 INFO  L225             Difference]: With dead ends: 28
[2020-09-24 19:35:06,540 INFO  L226             Difference]: Without dead ends: 23
[2020-09-24 19:35:06,542 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 19:35:06,542 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2020-09-24 19:35:06,547 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22.
[2020-09-24 19:35:06,547 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2020-09-24 19:35:06,548 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions.
[2020-09-24 19:35:06,548 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 16
[2020-09-24 19:35:06,549 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 19:35:06,549 INFO  L479      AbstractCegarLoop]: Abstraction has 22 states and 22 transitions.
[2020-09-24 19:35:06,549 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 19:35:06,549 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions.
[2020-09-24 19:35:06,550 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-09-24 19:35:06,550 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 19:35:06,551 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 19:35:06,551 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 19:35:06,552 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 19:35:06,552 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 19:35:06,552 INFO  L82        PathProgramCache]: Analyzing trace with hash -588245929, now seen corresponding path program 1 times
[2020-09-24 19:35:06,553 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 19:35:06,554 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957887710]
[2020-09-24 19:35:06,555 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 19:35:06,588 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 19:35:06,617 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:35:06,709 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:35:07,070 FATAL L256   erpolLogProxyWrapper]: Timeout: 1000
[2020-09-24 19:35:07,071 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 30
[2020-09-24 19:35:07,071 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 19:35:07,071 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 481
[2020-09-24 19:35:07,073 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 19:35:07,073 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-09-24 19:35:07,073 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 18
[2020-09-24 19:35:07,073 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-09-24 19:35:07,073 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 19:35:07,172 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 19:35:07,173 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 19:35:07,174 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:35:07,176 FATAL L256   erpolLogProxyWrapper]: Timeout: 1000
[2020-09-24 19:35:07,176 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 19:35:07,176 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 19:35:07,177 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 19:35:07,177 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 19:35:07,177 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 19:35:07,177 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 19:35:07,178 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 19:35:07,178 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 19:35:07,181 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 19:35:07,181 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957887710]
[2020-09-24 19:35:07,182 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 19:35:07,182 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2020-09-24 19:35:07,182 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206682682]
[2020-09-24 19:35:07,183 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-09-24 19:35:07,183 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 19:35:07,183 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-09-24 19:35:07,184 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72
[2020-09-24 19:35:07,184 INFO  L87              Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 9 states.
[2020-09-24 19:35:07,350 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 19:35:07,350 INFO  L93              Difference]: Finished difference Result 23 states and 23 transitions.
[2020-09-24 19:35:07,350 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-09-24 19:35:07,351 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 21
[2020-09-24 19:35:07,351 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 19:35:07,351 INFO  L225             Difference]: With dead ends: 23
[2020-09-24 19:35:07,352 INFO  L226             Difference]: Without dead ends: 0
[2020-09-24 19:35:07,353 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182
[2020-09-24 19:35:07,353 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-24 19:35:07,353 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-24 19:35:07,354 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-24 19:35:07,354 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-24 19:35:07,354 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21
[2020-09-24 19:35:07,354 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 19:35:07,355 INFO  L479      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-24 19:35:07,355 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-09-24 19:35:07,355 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-24 19:35:07,355 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-24 19:35:07,355 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 19:35:07,358 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-24 19:35:07,411 INFO  L271        CegarLoopResult]: At program point  ULTIMATE.initFINAL(line -1)  the Hoare annotation is:  true
[2020-09-24 19:35:07,412 INFO  L268        CegarLoopResult]: For program point  ULTIMATE.initEXIT(line -1)  no Hoare annotation was computed.
[2020-09-24 19:35:07,412 INFO  L268        CegarLoopResult]: For program point  ULTIMATE.startEXIT(line -1)  no Hoare annotation was computed.
[2020-09-24 19:35:07,412 INFO  L271        CegarLoopResult]: At program point  L-1(line -1)  the Hoare annotation is:  true
[2020-09-24 19:35:07,412 INFO  L271        CegarLoopResult]: At program point  ULTIMATE.startENTRY(line -1)  the Hoare annotation is:  true
[2020-09-24 19:35:07,413 INFO  L268        CegarLoopResult]: For program point  ULTIMATE.startFINAL(line -1)  no Hoare annotation was computed.
[2020-09-24 19:35:07,413 INFO  L268        CegarLoopResult]: For program point  L4-3(lines 3 5)  no Hoare annotation was computed.
[2020-09-24 19:35:07,413 INFO  L268        CegarLoopResult]: For program point  assume_abort_if_notENTRY(lines 3 5)  no Hoare annotation was computed.
[2020-09-24 19:35:07,413 INFO  L268        CegarLoopResult]: For program point  L4(line 4)  no Hoare annotation was computed.
[2020-09-24 19:35:07,413 INFO  L268        CegarLoopResult]: For program point  L4-1(line 4)  no Hoare annotation was computed.
[2020-09-24 19:35:07,413 INFO  L268        CegarLoopResult]: For program point  assume_abort_if_notEXIT(lines 3 5)  no Hoare annotation was computed.
[2020-09-24 19:35:07,414 INFO  L268        CegarLoopResult]: For program point  mainEXIT(lines 13 24)  no Hoare annotation was computed.
[2020-09-24 19:35:07,414 INFO  L268        CegarLoopResult]: For program point  L19(line 19)  no Hoare annotation was computed.
[2020-09-24 19:35:07,414 INFO  L268        CegarLoopResult]: For program point  L17(line 17)  no Hoare annotation was computed.
[2020-09-24 19:35:07,414 INFO  L268        CegarLoopResult]: For program point  L17-1(line 17)  no Hoare annotation was computed.
[2020-09-24 19:35:07,414 INFO  L268        CegarLoopResult]: For program point  L15(line 15)  no Hoare annotation was computed.
[2020-09-24 19:35:07,415 INFO  L268        CegarLoopResult]: For program point  mainFINAL(lines 13 24)  no Hoare annotation was computed.
[2020-09-24 19:35:07,415 INFO  L271        CegarLoopResult]: At program point  mainENTRY(lines 13 24)  the Hoare annotation is:  true
[2020-09-24 19:35:07,415 INFO  L268        CegarLoopResult]: For program point  L22(line 22)  no Hoare annotation was computed.
[2020-09-24 19:35:07,415 INFO  L268        CegarLoopResult]: For program point  L20(line 20)  no Hoare annotation was computed.
[2020-09-24 19:35:07,415 INFO  L268        CegarLoopResult]: For program point  L20-1(line 20)  no Hoare annotation was computed.
[2020-09-24 19:35:07,415 INFO  L268        CegarLoopResult]: For program point  L20-2(line 20)  no Hoare annotation was computed.
[2020-09-24 19:35:07,416 INFO  L268        CegarLoopResult]: For program point  L16(line 16)  no Hoare annotation was computed.
[2020-09-24 19:35:07,416 INFO  L264        CegarLoopResult]: At program point  L18-2(lines 18 21)  the Hoare annotation is:  (or (<= (+ main_~x~0 50) 0) (<= (+ main_~x~0 2) main_~y~0))
[2020-09-24 19:35:07,416 INFO  L268        CegarLoopResult]: For program point  L16-1(line 16)  no Hoare annotation was computed.
[2020-09-24 19:35:07,416 INFO  L264        CegarLoopResult]: At program point  L18-3(lines 18 21)  the Hoare annotation is:  (and (<= 2 main_~y~0) (<= (+ main_~x~0 2) main_~y~0))
[2020-09-24 19:35:07,417 INFO  L268        CegarLoopResult]: For program point  L14(line 14)  no Hoare annotation was computed.
[2020-09-24 19:35:07,417 INFO  L268        CegarLoopResult]: For program point  L16-2(line 16)  no Hoare annotation was computed.
[2020-09-24 19:35:07,417 INFO  L271        CegarLoopResult]: At program point  __VERIFIER_assertENTRY(lines 6 11)  the Hoare annotation is:  true
[2020-09-24 19:35:07,417 INFO  L268        CegarLoopResult]: For program point  __VERIFIER_assertEXIT(lines 6 11)  no Hoare annotation was computed.
[2020-09-24 19:35:07,417 INFO  L268        CegarLoopResult]: For program point  L8(line 8)  no Hoare annotation was computed.
[2020-09-24 19:35:07,418 INFO  L268        CegarLoopResult]: For program point  L7(lines 7 9)  no Hoare annotation was computed.
[2020-09-24 19:35:07,418 INFO  L268        CegarLoopResult]: For program point  L7-2(lines 6 11)  no Hoare annotation was computed.
[2020-09-24 19:35:07,418 INFO  L268        CegarLoopResult]: For program point  __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8)  no Hoare annotation was computed.
[2020-09-24 19:35:07,454 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:35:07 BoogieIcfgContainer
[2020-09-24 19:35:07,455 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 19:35:07,458 INFO  L168              Benchmark]: Toolchain (without parser) took 2374.53 ms. Allocated memory was 145.8 MB in the beginning and 233.8 MB in the end (delta: 88.1 MB). Free memory was 100.9 MB in the beginning and 204.5 MB in the end (delta: -103.6 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB.
[2020-09-24 19:35:07,459 INFO  L168              Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 145.8 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-24 19:35:07,460 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 309.32 ms. Allocated memory is still 145.8 MB. Free memory was 100.3 MB in the beginning and 91.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB.
[2020-09-24 19:35:07,462 INFO  L168              Benchmark]: Boogie Preprocessor took 128.61 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 91.0 MB in the beginning and 181.9 MB in the end (delta: -90.9 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB.
[2020-09-24 19:35:07,463 INFO  L168              Benchmark]: RCFGBuilder took 347.48 ms. Allocated memory is still 201.9 MB. Free memory was 181.9 MB in the beginning and 168.0 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB.
[2020-09-24 19:35:07,464 INFO  L168              Benchmark]: TraceAbstraction took 1573.99 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 167.4 MB in the beginning and 204.5 MB in the end (delta: -37.1 MB). Peak memory consumption was 86.9 MB. Max. memory is 7.1 GB.
[2020-09-24 19:35:07,468 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.26 ms. Allocated memory is still 145.8 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 309.32 ms. Allocated memory is still 145.8 MB. Free memory was 100.3 MB in the beginning and 91.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 128.61 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 91.0 MB in the beginning and 181.9 MB in the end (delta: -90.9 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 347.48 ms. Allocated memory is still 201.9 MB. Free memory was 181.9 MB in the beginning and 168.0 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 1573.99 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 167.4 MB in the beginning and 204.5 MB in the end (delta: -37.1 MB). Peak memory consumption was 86.9 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - PositiveResult [Line: 8]: 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: 18]: Loop Invariant
    Derived loop invariant: x + 50 <= 0 || x + 2 <= y
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 12 SDslu, 71 SDs, 0 SdLazy, 64 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 11 NumberOfFragments, 25 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 1670 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be correct!
Received shutdown request...