/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 interpolation-heuristic=FIRST --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-acceleration/const_1-1.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 16:10:33,893 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 16:10:33,899 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 16:10:33,945 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 16:10:33,946 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 16:10:33,958 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 16:10:33,960 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 16:10:33,964 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 16:10:33,967 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 16:10:33,971 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 16:10:33,972 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 16:10:33,973 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 16:10:33,973 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 16:10:33,977 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 16:10:33,980 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 16:10:33,981 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 16:10:33,983 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 16:10:33,985 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 16:10:33,986 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 16:10:33,997 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 16:10:33,999 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 16:10:34,001 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 16:10:34,002 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 16:10:34,003 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 16:10:34,006 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 16:10:34,006 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 16:10:34,007 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 16:10:34,010 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 16:10:34,011 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 16:10:34,013 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 16:10:34,013 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 16:10:34,014 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 16:10:34,015 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 16:10:34,016 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 16:10:34,018 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 16:10:34,018 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 16:10:34,019 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 16:10:34,019 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 16:10:34,020 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 16:10:34,021 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 16:10:34,022 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 16:10:34,023 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 16:10:34,075 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 16:10:34,075 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 16:10:34,078 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 16:10:34,078 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 16:10:34,078 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 16:10:34,079 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 16:10:34,079 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 16:10:34,079 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 16:10:34,080 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 16:10:34,080 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 16:10:34,081 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 16:10:34,081 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 16:10:34,081 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 16:10:34,082 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 16:10:34,082 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 16:10:34,082 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 16:10:34,083 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 16:10:34,083 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 16:10:34,083 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 16:10:34,083 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 16:10:34,083 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 16:10:34,084 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 16:10:34,084 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 16:10:34,084 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 16:10:34,084 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 16:10:34,085 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 16:10:34,085 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 16:10:34,085 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 16:10:34,085 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 16:10:34,085 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true;
[2020-09-24 16:10:34,529 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 16:10:34,556 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 16:10:34,562 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 16:10:34,565 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 16:10:34,566 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 16:10:34,568 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/const_1-1.c
[2020-09-24 16:10:34,653 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a37411a55/521b1a326acd4131a8e6ed3776608cb7/FLAG9f68f504b
[2020-09-24 16:10:35,199 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 16:10:35,200 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/const_1-1.c
[2020-09-24 16:10:35,208 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a37411a55/521b1a326acd4131a8e6ed3776608cb7/FLAG9f68f504b
[2020-09-24 16:10:35,553 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a37411a55/521b1a326acd4131a8e6ed3776608cb7
[2020-09-24 16:10:35,569 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 16:10:35,575 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 16:10:35,576 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 16:10:35,577 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 16:10:35,581 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 16:10:35,582 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:10:35" (1/1) ...
[2020-09-24 16:10:35,587 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad4c324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:35, skipping insertion in model container
[2020-09-24 16:10:35,587 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:10:35" (1/1) ...
[2020-09-24 16:10:35,597 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 16:10:35,619 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 16:10:35,843 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:10:35,848 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 16:10:35,865 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 16:10:35,879 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 16:10:35,880 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:35 WrapperNode
[2020-09-24 16:10:35,880 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 16:10:35,881 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 16:10:35,881 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 16:10:35,881 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 16:10:35,894 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:35" (1/1) ...
[2020-09-24 16:10:35,895 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:35" (1/1) ...
[2020-09-24 16:10:35,900 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:35" (1/1) ...
[2020-09-24 16:10:35,901 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:35" (1/1) ...
[2020-09-24 16:10:35,983 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:35" (1/1) ...
[2020-09-24 16:10:35,990 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:35" (1/1) ...
[2020-09-24 16:10:35,991 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:35" (1/1) ...
[2020-09-24 16:10:35,992 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 16:10:35,992 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 16:10:35,992 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 16:10:35,993 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 16:10:35,994 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:35" (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 16:10:36,074 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 16:10:36,074 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 16:10:36,074 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-24 16:10:36,075 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 16:10:36,075 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 16:10:36,075 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-24 16:10:36,075 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 16:10:36,075 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 16:10:36,076 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 16:10:36,279 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 16:10:36,279 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-24 16:10:36,283 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:10:36 BoogieIcfgContainer
[2020-09-24 16:10:36,283 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 16:10:36,290 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 16:10:36,290 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 16:10:36,293 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 16:10:36,293 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:10:35" (1/3) ...
[2020-09-24 16:10:36,294 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5c1361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:10:36, skipping insertion in model container
[2020-09-24 16:10:36,294 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:10:35" (2/3) ...
[2020-09-24 16:10:36,298 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5c1361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:10:36, skipping insertion in model container
[2020-09-24 16:10:36,298 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:10:36" (3/3) ...
[2020-09-24 16:10:36,300 INFO  L109   eAbstractionObserver]: Analyzing ICFG const_1-1.c
[2020-09-24 16:10:36,309 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 16:10:36,326 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 16:10:36,349 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 16:10:36,377 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 16:10:36,378 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 16:10:36,378 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 16:10:36,378 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 16:10:36,378 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 16:10:36,378 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 16:10:36,379 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 16:10:36,379 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 16:10:36,397 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states.
[2020-09-24 16:10:36,404 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-09-24 16:10:36,404 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:10:36,405 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 16:10:36,406 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:10:36,413 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:10:36,414 INFO  L82        PathProgramCache]: Analyzing trace with hash 493765703, now seen corresponding path program 1 times
[2020-09-24 16:10:36,423 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:10:36,423 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232590169]
[2020-09-24 16:10:36,424 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:10:36,519 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:10:36,534 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:10:36,534 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:10:36,534 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:10:36,535 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:10:36,535 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 20
[2020-09-24 16:10:36,535 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:10:36,535 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-09-24 16:10:36,536 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:10:36,536 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:10:36,536 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 13
[2020-09-24 16:10:36,536 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:10:36,537 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:10:36,565 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:10:36,567 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:10:36,568 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:10:36,569 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:10:36,569 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:10:36,569 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:10:36,570 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:10:36,570 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:10:36,570 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:10:36,570 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:10:36,571 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:10:36,571 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:10:36,571 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:10:36,571 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 16:10:36,577 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 16:10:36,578 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232590169]
[2020-09-24 16:10:36,581 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:10:36,581 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-09-24 16:10:36,582 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567539602]
[2020-09-24 16:10:36,588 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-09-24 16:10:36,588 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:10:36,603 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-09-24 16:10:36,604 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-09-24 16:10:36,607 INFO  L87              Difference]: Start difference. First operand 22 states. Second operand 2 states.
[2020-09-24 16:10:36,632 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:10:36,632 INFO  L93              Difference]: Finished difference Result 33 states and 36 transitions.
[2020-09-24 16:10:36,633 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2020-09-24 16:10:36,634 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 11
[2020-09-24 16:10:36,635 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:10:36,645 INFO  L225             Difference]: With dead ends: 33
[2020-09-24 16:10:36,646 INFO  L226             Difference]: Without dead ends: 16
[2020-09-24 16:10:36,650 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 16:10:36,672 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2020-09-24 16:10:36,691 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16.
[2020-09-24 16:10:36,692 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 16 states.
[2020-09-24 16:10:36,693 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions.
[2020-09-24 16:10:36,695 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11
[2020-09-24 16:10:36,695 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:10:36,695 INFO  L479      AbstractCegarLoop]: Abstraction has 16 states and 16 transitions.
[2020-09-24 16:10:36,696 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-09-24 16:10:36,696 INFO  L276                IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions.
[2020-09-24 16:10:36,696 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-09-24 16:10:36,697 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:10:36,697 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 16:10:36,697 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 16:10:36,697 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:10:36,698 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:10:36,698 INFO  L82        PathProgramCache]: Analyzing trace with hash 486377535, now seen corresponding path program 1 times
[2020-09-24 16:10:36,698 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:10:36,698 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762106027]
[2020-09-24 16:10:36,699 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:10:36,725 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:10:36,739 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:10:36,739 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:10:36,739 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:10:36,739 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:10:36,740 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 20
[2020-09-24 16:10:36,740 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:10:36,740 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-09-24 16:10:36,740 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:10:36,741 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 16:10:36,741 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-24 16:10:36,741 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-09-24 16:10:36,742 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:10:36,825 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:10:36,827 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:10:36,828 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:10:36,829 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:10:36,829 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:10:36,829 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:10:36,830 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:10:36,830 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:10:36,830 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 16:10:36,830 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:10:36,831 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:10:36,831 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:10:36,831 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:10:36,832 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:10:36,835 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 16:10:36,836 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762106027]
[2020-09-24 16:10:36,836 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:10:36,836 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-09-24 16:10:36,837 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327391624]
[2020-09-24 16:10:36,839 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-09-24 16:10:36,840 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:10:36,840 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-09-24 16:10:36,841 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-09-24 16:10:36,841 INFO  L87              Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states.
[2020-09-24 16:10:36,874 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:10:36,874 INFO  L93              Difference]: Finished difference Result 25 states and 25 transitions.
[2020-09-24 16:10:36,875 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-09-24 16:10:36,875 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 11
[2020-09-24 16:10:36,876 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:10:36,876 INFO  L225             Difference]: With dead ends: 25
[2020-09-24 16:10:36,877 INFO  L226             Difference]: Without dead ends: 20
[2020-09-24 16:10:36,878 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 16:10:36,879 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2020-09-24 16:10:36,883 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17.
[2020-09-24 16:10:36,883 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 17 states.
[2020-09-24 16:10:36,884 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions.
[2020-09-24 16:10:36,884 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11
[2020-09-24 16:10:36,885 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:10:36,885 INFO  L479      AbstractCegarLoop]: Abstraction has 17 states and 17 transitions.
[2020-09-24 16:10:36,885 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-09-24 16:10:36,885 INFO  L276                IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions.
[2020-09-24 16:10:36,886 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-09-24 16:10:36,887 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 16:10:36,887 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 16:10:36,887 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 16:10:36,888 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 16:10:36,888 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 16:10:36,888 INFO  L82        PathProgramCache]: Analyzing trace with hash -1748013841, now seen corresponding path program 1 times
[2020-09-24 16:10:36,889 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 16:10:36,889 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324051004]
[2020-09-24 16:10:36,889 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 16:10:36,912 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:10:36,936 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:10:36,936 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:10:36,937 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:10:36,937 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:10:36,937 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-24 16:10:36,938 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:10:36,938 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 24
[2020-09-24 16:10:36,938 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:10:36,938 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 16:10:36,939 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 14
[2020-09-24 16:10:36,939 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-09-24 16:10:36,939 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:10:37,106 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 16:10:37,108 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 16:10:37,109 FATAL L256   erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 16:10:37,110 FATAL L256   erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 16:10:37,110 FATAL L256   erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 16:10:37,110 FATAL L256   erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 16:10:37,111 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 16:10:37,111 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 16:10:37,111 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 16:10:37,112 FATAL L256   erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 16:10:37,112 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 16:10:37,112 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 16:10:37,112 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 16:10:37,113 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 16:10:37,118 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 16:10:37,119 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324051004]
[2020-09-24 16:10:37,119 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 16:10:37,119 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 16:10:37,120 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113659849]
[2020-09-24 16:10:37,120 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 16:10:37,121 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 16:10:37,121 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 16:10:37,121 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-24 16:10:37,122 INFO  L87              Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states.
[2020-09-24 16:10:37,157 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 16:10:37,157 INFO  L93              Difference]: Finished difference Result 18 states and 18 transitions.
[2020-09-24 16:10:37,158 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-24 16:10:37,158 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 16
[2020-09-24 16:10:37,158 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 16:10:37,159 INFO  L225             Difference]: With dead ends: 18
[2020-09-24 16:10:37,159 INFO  L226             Difference]: Without dead ends: 0
[2020-09-24 16:10:37,160 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-24 16:10:37,160 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-24 16:10:37,160 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-24 16:10:37,160 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-24 16:10:37,161 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-24 16:10:37,161 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16
[2020-09-24 16:10:37,161 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 16:10:37,161 INFO  L479      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-24 16:10:37,161 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 16:10:37,162 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-24 16:10:37,162 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-24 16:10:37,162 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 16:10:37,165 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-24 16:10:37,223 INFO  L271        CegarLoopResult]: At program point  ULTIMATE.initFINAL(line -1)  the Hoare annotation is:  true
[2020-09-24 16:10:37,224 INFO  L268        CegarLoopResult]: For program point  ULTIMATE.initEXIT(line -1)  no Hoare annotation was computed.
[2020-09-24 16:10:37,224 INFO  L268        CegarLoopResult]: For program point  ULTIMATE.startEXIT(line -1)  no Hoare annotation was computed.
[2020-09-24 16:10:37,224 INFO  L271        CegarLoopResult]: At program point  L-1(line -1)  the Hoare annotation is:  true
[2020-09-24 16:10:37,224 INFO  L271        CegarLoopResult]: At program point  ULTIMATE.startENTRY(line -1)  the Hoare annotation is:  true
[2020-09-24 16:10:37,224 INFO  L268        CegarLoopResult]: For program point  ULTIMATE.startFINAL(line -1)  no Hoare annotation was computed.
[2020-09-24 16:10:37,224 INFO  L271        CegarLoopResult]: At program point  mainENTRY(lines 10 20)  the Hoare annotation is:  true
[2020-09-24 16:10:37,225 INFO  L268        CegarLoopResult]: For program point  mainEXIT(lines 10 20)  no Hoare annotation was computed.
[2020-09-24 16:10:37,225 INFO  L268        CegarLoopResult]: For program point  L16(line 16)  no Hoare annotation was computed.
[2020-09-24 16:10:37,225 INFO  L268        CegarLoopResult]: For program point  L15(line 15)  no Hoare annotation was computed.
[2020-09-24 16:10:37,225 INFO  L268        CegarLoopResult]: For program point  L16-1(line 16)  no Hoare annotation was computed.
[2020-09-24 16:10:37,225 INFO  L268        CegarLoopResult]: For program point  L16-2(line 16)  no Hoare annotation was computed.
[2020-09-24 16:10:37,225 INFO  L268        CegarLoopResult]: For program point  mainFINAL(lines 10 20)  no Hoare annotation was computed.
[2020-09-24 16:10:37,226 INFO  L268        CegarLoopResult]: For program point  L12(line 12)  no Hoare annotation was computed.
[2020-09-24 16:10:37,226 INFO  L264        CegarLoopResult]: At program point  L14-2(lines 14 17)  the Hoare annotation is:  (or (and (<= main_~y~0 0) (<= 0 main_~y~0)) (and (<= 0 main_~x~0) (<= main_~x~0 (* 4294967296 (div main_~x~0 4294967296)))))
[2020-09-24 16:10:37,226 INFO  L264        CegarLoopResult]: At program point  L14-3(lines 14 17)  the Hoare annotation is:  (and (<= 0 main_~x~0) (<= main_~x~0 (* 4294967296 (div main_~x~0 4294967296))))
[2020-09-24 16:10:37,227 INFO  L271        CegarLoopResult]: At program point  __VERIFIER_assertENTRY(lines 3 8)  the Hoare annotation is:  true
[2020-09-24 16:10:37,227 INFO  L268        CegarLoopResult]: For program point  __VERIFIER_assertEXIT(lines 3 8)  no Hoare annotation was computed.
[2020-09-24 16:10:37,227 INFO  L268        CegarLoopResult]: For program point  L5(line 5)  no Hoare annotation was computed.
[2020-09-24 16:10:37,227 INFO  L268        CegarLoopResult]: For program point  L4(lines 4 6)  no Hoare annotation was computed.
[2020-09-24 16:10:37,227 INFO  L268        CegarLoopResult]: For program point  __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5)  no Hoare annotation was computed.
[2020-09-24 16:10:37,227 INFO  L268        CegarLoopResult]: For program point  L4-2(lines 3 8)  no Hoare annotation was computed.
[2020-09-24 16:10:37,250 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:10:37 BoogieIcfgContainer
[2020-09-24 16:10:37,250 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 16:10:37,254 INFO  L168              Benchmark]: Toolchain (without parser) took 1681.97 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 104.4 MB in the beginning and 117.7 MB in the end (delta: -13.4 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB.
[2020-09-24 16:10:37,255 INFO  L168              Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-09-24 16:10:37,256 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 304.14 ms. Allocated memory is still 141.0 MB. Free memory was 103.8 MB in the beginning and 94.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB.
[2020-09-24 16:10:37,257 INFO  L168              Benchmark]: Boogie Preprocessor took 111.32 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 94.5 MB in the beginning and 183.1 MB in the end (delta: -88.5 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB.
[2020-09-24 16:10:37,258 INFO  L168              Benchmark]: RCFGBuilder took 291.09 ms. Allocated memory is still 203.9 MB. Free memory was 183.1 MB in the beginning and 171.2 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB.
[2020-09-24 16:10:37,259 INFO  L168              Benchmark]: TraceAbstraction took 960.54 ms. Allocated memory is still 203.9 MB. Free memory was 170.5 MB in the beginning and 117.7 MB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB.
[2020-09-24 16:10:37,263 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.28 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 304.14 ms. Allocated memory is still 141.0 MB. Free memory was 103.8 MB in the beginning and 94.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 111.32 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 94.5 MB in the beginning and 183.1 MB in the end (delta: -88.5 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 291.09 ms. Allocated memory is still 203.9 MB. Free memory was 183.1 MB in the beginning and 171.2 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 960.54 ms. Allocated memory is still 203.9 MB. Free memory was 170.5 MB in the beginning and 117.7 MB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - PositiveResult [Line: 5]: 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: 14]: Loop Invariant
    Derived loop invariant: (y <= 0 && 0 <= y) || (0 <= x && x <= 4294967296 * (x / 4294967296))
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 5 SDslu, 47 SDs, 0 SdLazy, 9 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 11 NumberOfFragments, 35 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 1325 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...