/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --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-invgen/nest-if3.i


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


This is Ultimate 0.1.25-c90d42b
[2020-09-24 21:51:19,423 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 21:51:19,428 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 21:51:19,474 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 21:51:19,474 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 21:51:19,482 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 21:51:19,485 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2020-09-24 21:51:19,491 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 21:51:19,494 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 21:51:19,495 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
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[2020-09-24 21:51:19,496 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 21:51:19,499 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 21:51:19,501 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 21:51:19,503 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 21:51:19,505 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 21:51:19,506 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 21:51:19,507 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 21:51:19,517 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 21:51:19,520 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 21:51:19,521 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 21:51:19,522 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 21:51:19,522 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 21:51:19,537 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 21:51:19,538 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 21:51:19,538 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 21:51:19,541 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 21:51:19,542 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 21:51:19,545 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 21:51:19,545 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 21:51:19,546 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 21:51:19,547 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 21:51:19,548 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 21:51:19,549 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 21:51:19,549 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2020-09-24 21:51:19,550 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-09-24 21:51:19,552 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 21:51:19,553 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-09-24 21:51:19,581 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 21:51:19,581 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 21:51:19,582 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 21:51:19,583 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 21:51:19,583 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 21:51:19,583 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 21:51:19,583 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 21:51:19,584 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 21:51:19,584 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 21:51:19,584 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 21:51:19,584 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 21:51:19,584 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 21:51:19,585 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 21:51:19,585 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 21:51:19,585 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 21:51:19,585 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 21:51:19,585 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 21:51:19,586 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 21:51:19,586 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 21:51:19,586 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 21:51:19,586 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 21:51:19,586 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 21:51:19,587 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 21:51:19,587 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 21:51:19,587 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 21:51:19,587 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 21:51:19,588 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 21:51:19,588 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 21:51:19,588 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 21:51:19,588 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true;
[2020-09-24 21:51:20,074 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 21:51:20,099 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 21:51:20,107 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 21:51:20,110 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 21:51:20,112 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 21:51:20,113 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nest-if3.i
[2020-09-24 21:51:20,207 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4baeef30/c46e6136a37649a4b77a6686f8863308/FLAGc6af6e781
[2020-09-24 21:51:20,755 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 21:51:20,756 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nest-if3.i
[2020-09-24 21:51:20,764 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4baeef30/c46e6136a37649a4b77a6686f8863308/FLAGc6af6e781
[2020-09-24 21:51:21,097 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4baeef30/c46e6136a37649a4b77a6686f8863308
[2020-09-24 21:51:21,109 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 21:51:21,114 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 21:51:21,115 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 21:51:21,116 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 21:51:21,120 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 21:51:21,121 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:51:21" (1/1) ...
[2020-09-24 21:51:21,125 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e06715f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:21, skipping insertion in model container
[2020-09-24 21:51:21,125 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:51:21" (1/1) ...
[2020-09-24 21:51:21,135 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 21:51:21,160 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 21:51:21,381 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 21:51:21,388 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 21:51:21,410 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 21:51:21,431 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 21:51:21,431 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:21 WrapperNode
[2020-09-24 21:51:21,432 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 21:51:21,433 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 21:51:21,433 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 21:51:21,433 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 21:51:21,451 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:21" (1/1) ...
[2020-09-24 21:51:21,451 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:21" (1/1) ...
[2020-09-24 21:51:21,457 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:21" (1/1) ...
[2020-09-24 21:51:21,458 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:21" (1/1) ...
[2020-09-24 21:51:21,463 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:21" (1/1) ...
[2020-09-24 21:51:21,470 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:21" (1/1) ...
[2020-09-24 21:51:21,472 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:21" (1/1) ...
[2020-09-24 21:51:21,560 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 21:51:21,561 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 21:51:21,561 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 21:51:21,561 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 21:51:21,565 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:21" (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 21:51:21,649 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 21:51:21,649 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 21:51:21,649 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-09-24 21:51:21,649 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-24 21:51:21,650 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 21:51:21,651 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 21:51:21,651 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-09-24 21:51:21,651 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-09-24 21:51:21,652 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-24 21:51:21,652 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 21:51:21,653 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 21:51:21,653 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 21:51:21,653 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 21:51:21,911 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 21:51:21,911 INFO  L295             CfgBuilder]: Removed 2 assume(true) statements.
[2020-09-24 21:51:21,919 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:51:21 BoogieIcfgContainer
[2020-09-24 21:51:21,919 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 21:51:21,921 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 21:51:21,921 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 21:51:21,925 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 21:51:21,925 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:51:21" (1/3) ...
[2020-09-24 21:51:21,926 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289c4525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:51:21, skipping insertion in model container
[2020-09-24 21:51:21,927 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:21" (2/3) ...
[2020-09-24 21:51:21,927 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289c4525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:51:21, skipping insertion in model container
[2020-09-24 21:51:21,927 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:51:21" (3/3) ...
[2020-09-24 21:51:21,929 INFO  L109   eAbstractionObserver]: Analyzing ICFG nest-if3.i
[2020-09-24 21:51:21,946 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 21:51:21,959 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 21:51:21,985 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 21:51:22,019 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 21:51:22,020 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 21:51:22,020 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 21:51:22,020 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 21:51:22,020 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 21:51:22,020 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 21:51:22,021 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 21:51:22,021 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 21:51:22,047 INFO  L276                IsEmpty]: Start isEmpty. Operand 46 states.
[2020-09-24 21:51:22,056 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-09-24 21:51:22,057 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:51:22,058 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, 1, 1, 1, 1]
[2020-09-24 21:51:22,059 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:51:22,066 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:51:22,067 INFO  L82        PathProgramCache]: Analyzing trace with hash 781844856, now seen corresponding path program 1 times
[2020-09-24 21:51:22,078 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:51:22,079 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985608677]
[2020-09-24 21:51:22,079 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:51:22,219 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:51:22,250 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:51:22,478 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:51:22,478 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 34
[2020-09-24 21:51:22,478 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:51:22,478 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 252
[2020-09-24 21:51:22,482 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:51:22,482 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-24 21:51:22,483 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 21
[2020-09-24 21:51:22,483 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-09-24 21:51:22,483 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-24 21:51:22,617 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:51:22,619 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:51:22,621 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:51:22,626 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:51:22,626 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:51:22,626 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:51:22,627 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 21:51:22,627 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:51:22,627 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:51:22,628 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:51:22,628 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:51:22,628 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 21:51:22,638 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 21:51:22,639 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985608677]
[2020-09-24 21:51:22,641 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 21:51:22,642 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-24 21:51:22,643 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181157173]
[2020-09-24 21:51:22,650 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-24 21:51:22,650 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:51:22,666 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-24 21:51:22,667 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-24 21:51:22,669 INFO  L87              Difference]: Start difference. First operand 46 states. Second operand 6 states.
[2020-09-24 21:51:22,870 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:51:22,871 INFO  L93              Difference]: Finished difference Result 93 states and 114 transitions.
[2020-09-24 21:51:22,872 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-09-24 21:51:22,873 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 25
[2020-09-24 21:51:22,874 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:51:22,885 INFO  L225             Difference]: With dead ends: 93
[2020-09-24 21:51:22,886 INFO  L226             Difference]: Without dead ends: 57
[2020-09-24 21:51:22,891 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-09-24 21:51:22,909 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2020-09-24 21:51:22,937 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45.
[2020-09-24 21:51:22,939 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 45 states.
[2020-09-24 21:51:22,941 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions.
[2020-09-24 21:51:22,943 INFO  L78                 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 25
[2020-09-24 21:51:22,943 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:51:22,943 INFO  L479      AbstractCegarLoop]: Abstraction has 45 states and 48 transitions.
[2020-09-24 21:51:22,944 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-24 21:51:22,944 INFO  L276                IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions.
[2020-09-24 21:51:22,945 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2020-09-24 21:51:22,945 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 21:51:22,946 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 21:51:22,946 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 21:51:22,946 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 21:51:22,946 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 21:51:22,947 INFO  L82        PathProgramCache]: Analyzing trace with hash 1778608888, now seen corresponding path program 1 times
[2020-09-24 21:51:22,947 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 21:51:22,948 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012342233]
[2020-09-24 21:51:22,948 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 21:51:22,977 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:51:23,007 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:51:23,134 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:51:23,676 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:51:23,677 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 45
[2020-09-24 21:51:23,678 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 21:51:23,678 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 696
[2020-09-24 21:51:23,680 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:51:23,680 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 21:51:23,681 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 21
[2020-09-24 21:51:23,682 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-09-24 21:51:23,683 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-24 21:51:23,806 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 21:51:23,807 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:51:23,808 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:51:23,810 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:51:23,811 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 21:51:23,811 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 21:51:23,811 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-24 21:51:23,811 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:51:23,813 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 21:51:23,814 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:51:23,814 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 21:51:23,815 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-24 21:51:23,816 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 21:51:23,821 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 21:51:23,824 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:51:23,830 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 21:51:23,838 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 21:51:23,839 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-24 21:51:23,839 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 21:51:23,840 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 16
[2020-09-24 21:51:23,840 FATAL L256   erpolLogProxyWrapper]: Heuristic: LOWLEXORDER
[2020-09-24 21:51:23,840 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 21:51:23,840 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 21:51:23,841 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 21:51:23,850 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 10
[2020-09-24 21:51:23,944 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 21:51:23,945 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012342233]
[2020-09-24 21:51:23,945 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 21:51:23,947 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10
[2020-09-24 21:51:23,948 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334144993]
[2020-09-24 21:51:23,950 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2020-09-24 21:51:23,951 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 21:51:23,952 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2020-09-24 21:51:23,953 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90
[2020-09-24 21:51:23,953 INFO  L87              Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 10 states.
[2020-09-24 21:51:24,155 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 21:51:24,155 INFO  L93              Difference]: Finished difference Result 59 states and 63 transitions.
[2020-09-24 21:51:24,156 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-09-24 21:51:24,156 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 34
[2020-09-24 21:51:24,157 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 21:51:24,157 INFO  L225             Difference]: With dead ends: 59
[2020-09-24 21:51:24,157 INFO  L226             Difference]: Without dead ends: 0
[2020-09-24 21:51:24,159 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210
[2020-09-24 21:51:24,159 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-24 21:51:24,160 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-24 21:51:24,160 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-24 21:51:24,160 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-24 21:51:24,160 INFO  L78                 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34
[2020-09-24 21:51:24,160 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 21:51:24,161 INFO  L479      AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-24 21:51:24,161 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2020-09-24 21:51:24,161 INFO  L276                IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-24 21:51:24,161 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-24 21:51:24,161 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 21:51:24,164 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-24 21:51:24,257 INFO  L271        CegarLoopResult]: At program point  ULTIMATE.initFINAL(line -1)  the Hoare annotation is:  true
[2020-09-24 21:51:24,257 INFO  L268        CegarLoopResult]: For program point  ULTIMATE.initEXIT(line -1)  no Hoare annotation was computed.
[2020-09-24 21:51:24,257 INFO  L268        CegarLoopResult]: For program point  ULTIMATE.startEXIT(line -1)  no Hoare annotation was computed.
[2020-09-24 21:51:24,257 INFO  L271        CegarLoopResult]: At program point  L-1(line -1)  the Hoare annotation is:  true
[2020-09-24 21:51:24,258 INFO  L271        CegarLoopResult]: At program point  ULTIMATE.startENTRY(line -1)  the Hoare annotation is:  true
[2020-09-24 21:51:24,258 INFO  L268        CegarLoopResult]: For program point  ULTIMATE.startFINAL(line -1)  no Hoare annotation was computed.
[2020-09-24 21:51:24,258 INFO  L268        CegarLoopResult]: For program point  L4-3(lines 3 5)  no Hoare annotation was computed.
[2020-09-24 21:51:24,259 INFO  L268        CegarLoopResult]: For program point  assume_abort_if_notENTRY(lines 3 5)  no Hoare annotation was computed.
[2020-09-24 21:51:24,259 INFO  L268        CegarLoopResult]: For program point  L4(line 4)  no Hoare annotation was computed.
[2020-09-24 21:51:24,259 INFO  L268        CegarLoopResult]: For program point  L4-1(line 4)  no Hoare annotation was computed.
[2020-09-24 21:51:24,259 INFO  L268        CegarLoopResult]: For program point  assume_abort_if_notEXIT(lines 3 5)  no Hoare annotation was computed.
[2020-09-24 21:51:24,259 INFO  L268        CegarLoopResult]: For program point  mainEXIT(lines 13 27)  no Hoare annotation was computed.
[2020-09-24 21:51:24,259 INFO  L268        CegarLoopResult]: For program point  L19(line 19)  no Hoare annotation was computed.
[2020-09-24 21:51:24,260 INFO  L268        CegarLoopResult]: For program point  L19-1(line 19)  no Hoare annotation was computed.
[2020-09-24 21:51:24,260 INFO  L268        CegarLoopResult]: For program point  L15(line 15)  no Hoare annotation was computed.
[2020-09-24 21:51:24,260 INFO  L268        CegarLoopResult]: For program point  L15-1(line 15)  no Hoare annotation was computed.
[2020-09-24 21:51:24,260 INFO  L268        CegarLoopResult]: For program point  L15-2(line 15)  no Hoare annotation was computed.
[2020-09-24 21:51:24,260 INFO  L268        CegarLoopResult]: For program point  L24(lines 24 25)  no Hoare annotation was computed.
[2020-09-24 21:51:24,261 INFO  L268        CegarLoopResult]: For program point  L24-1(line 24)  no Hoare annotation was computed.
[2020-09-24 21:51:24,261 INFO  L268        CegarLoopResult]: For program point  L24-3(line 24)  no Hoare annotation was computed.
[2020-09-24 21:51:24,261 INFO  L268        CegarLoopResult]: For program point  L20(line 20)  no Hoare annotation was computed.
[2020-09-24 21:51:24,261 INFO  L268        CegarLoopResult]: For program point  L20-3(lines 20 26)  no Hoare annotation was computed.
[2020-09-24 21:51:24,262 INFO  L268        CegarLoopResult]: For program point  L16(line 16)  no Hoare annotation was computed.
[2020-09-24 21:51:24,262 INFO  L268        CegarLoopResult]: For program point  L20-4(line 20)  no Hoare annotation was computed.
[2020-09-24 21:51:24,262 INFO  L268        CegarLoopResult]: For program point  L16-1(line 16)  no Hoare annotation was computed.
[2020-09-24 21:51:24,262 INFO  L268        CegarLoopResult]: For program point  L20-5(line 20)  no Hoare annotation was computed.
[2020-09-24 21:51:24,262 INFO  L268        CegarLoopResult]: For program point  L16-2(line 16)  no Hoare annotation was computed.
[2020-09-24 21:51:24,263 INFO  L264        CegarLoopResult]: At program point  L20-6(lines 20 26)  the Hoare annotation is:  (<= 1 main_~l~0)
[2020-09-24 21:51:24,263 INFO  L268        CegarLoopResult]: For program point  L20-7(lines 13 27)  no Hoare annotation was computed.
[2020-09-24 21:51:24,263 INFO  L268        CegarLoopResult]: For program point  L25(line 25)  no Hoare annotation was computed.
[2020-09-24 21:51:24,264 INFO  L268        CegarLoopResult]: For program point  L21(line 21)  no Hoare annotation was computed.
[2020-09-24 21:51:24,264 INFO  L268        CegarLoopResult]: For program point  L21-3(line 21)  no Hoare annotation was computed.
[2020-09-24 21:51:24,265 INFO  L268        CegarLoopResult]: For program point  L17(line 17)  no Hoare annotation was computed.
[2020-09-24 21:51:24,266 INFO  L268        CegarLoopResult]: For program point  L21-4(line 21)  no Hoare annotation was computed.
[2020-09-24 21:51:24,267 INFO  L268        CegarLoopResult]: For program point  L17-1(line 17)  no Hoare annotation was computed.
[2020-09-24 21:51:24,267 INFO  L264        CegarLoopResult]: At program point  L21-5(lines 21 23)  the Hoare annotation is:  (and (<= 1 main_~l~0) (<= 1 main_~i~0))
[2020-09-24 21:51:24,268 INFO  L268        CegarLoopResult]: For program point  L21-6(lines 21 23)  no Hoare annotation was computed.
[2020-09-24 21:51:24,268 INFO  L271        CegarLoopResult]: At program point  mainENTRY(lines 13 27)  the Hoare annotation is:  true
[2020-09-24 21:51:24,268 INFO  L264        CegarLoopResult]: At program point  L22(line 22)  the Hoare annotation is:  (and (<= 1 main_~l~0) (<= 1 main_~i~0))
[2020-09-24 21:51:24,268 INFO  L268        CegarLoopResult]: For program point  L22-1(lines 21 23)  no Hoare annotation was computed.
[2020-09-24 21:51:24,268 INFO  L268        CegarLoopResult]: For program point  L18(line 18)  no Hoare annotation was computed.
[2020-09-24 21:51:24,269 INFO  L268        CegarLoopResult]: For program point  L18-1(line 18)  no Hoare annotation was computed.
[2020-09-24 21:51:24,269 INFO  L268        CegarLoopResult]: For program point  L14(line 14)  no Hoare annotation was computed.
[2020-09-24 21:51:24,269 INFO  L268        CegarLoopResult]: For program point  L14-1(line 14)  no Hoare annotation was computed.
[2020-09-24 21:51:24,269 INFO  L268        CegarLoopResult]: For program point  L14-2(line 14)  no Hoare annotation was computed.
[2020-09-24 21:51:24,269 INFO  L271        CegarLoopResult]: At program point  __VERIFIER_assertENTRY(lines 6 11)  the Hoare annotation is:  true
[2020-09-24 21:51:24,269 INFO  L268        CegarLoopResult]: For program point  __VERIFIER_assertEXIT(lines 6 11)  no Hoare annotation was computed.
[2020-09-24 21:51:24,270 INFO  L268        CegarLoopResult]: For program point  L8(line 8)  no Hoare annotation was computed.
[2020-09-24 21:51:24,270 INFO  L268        CegarLoopResult]: For program point  L7(lines 7 9)  no Hoare annotation was computed.
[2020-09-24 21:51:24,270 INFO  L268        CegarLoopResult]: For program point  L7-2(lines 6 11)  no Hoare annotation was computed.
[2020-09-24 21:51:24,270 INFO  L268        CegarLoopResult]: For program point  __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8)  no Hoare annotation was computed.
[2020-09-24 21:51:24,302 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:51:24 BoogieIcfgContainer
[2020-09-24 21:51:24,302 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 21:51:24,308 INFO  L168              Benchmark]: Toolchain (without parser) took 3192.99 ms. Allocated memory was 140.0 MB in the beginning and 237.0 MB in the end (delta: 97.0 MB). Free memory was 103.7 MB in the beginning and 155.1 MB in the end (delta: -51.4 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB.
[2020-09-24 21:51:24,310 INFO  L168              Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-09-24 21:51:24,311 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 316.90 ms. Allocated memory is still 140.0 MB. Free memory was 103.0 MB in the beginning and 93.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB.
[2020-09-24 21:51:24,312 INFO  L168              Benchmark]: Boogie Preprocessor took 127.69 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 93.6 MB in the beginning and 183.9 MB in the end (delta: -90.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB.
[2020-09-24 21:51:24,314 INFO  L168              Benchmark]: RCFGBuilder took 358.69 ms. Allocated memory is still 203.9 MB. Free memory was 183.5 MB in the beginning and 167.5 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB.
[2020-09-24 21:51:24,316 INFO  L168              Benchmark]: TraceAbstraction took 2381.28 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 166.8 MB in the beginning and 155.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB.
[2020-09-24 21:51:24,326 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 316.90 ms. Allocated memory is still 140.0 MB. Free memory was 103.0 MB in the beginning and 93.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 127.69 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 93.6 MB in the beginning and 183.9 MB in the end (delta: -90.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 358.69 ms. Allocated memory is still 203.9 MB. Free memory was 183.5 MB in the beginning and 167.5 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 2381.28 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 166.8 MB in the beginning and 155.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 44.7 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: 20]: Loop Invariant
    Derived loop invariant: 1 <= l
  - InvariantResult [Line: 21]: Loop Invariant
    Derived loop invariant: 1 <= l && 1 <= i
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 5 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 88 SDtfs, 94 SDslu, 356 SDs, 0 SdLazy, 148 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 2 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 10 PreInvPairs, 17 NumberOfFragments, 22 HoareAnnotationTreeSize, 10 FomulaSimplifications, 49 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 4077 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 3/4 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...