/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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232a.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-25 03:07:58,675 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-25 03:07:58,680 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 03:07:58,707 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 03:07:58,707 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 03:07:58,709 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 03:07:58,710 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2020-09-25 03:07:58,715 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-09-25 03:07:58,718 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
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[2020-09-25 03:07:58,721 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 03:07:58,722 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 03:07:58,723 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 03:07:58,725 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 03:07:58,727 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 03:07:58,731 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 03:07:58,734 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 03:07:58,735 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 03:07:58,738 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 03:07:58,739 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 03:07:58,745 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 03:07:58,746 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 03:07:58,746 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 03:07:58,749 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 03:07:58,750 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 03:07:58,752 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 03:07:58,753 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 03:07:58,754 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 03:07:58,755 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 03:07:58,756 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 03:07:58,757 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 03:07:58,757 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 03:07:58,758 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 03:07:58,758 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 03:07:58,759 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-09-25 03:07:58,762 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 03:07:58,762 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-09-25 03:07:58,825 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-25 03:07:58,826 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 03:07:58,828 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 03:07:58,828 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-25 03:07:58,829 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-25 03:07:58,829 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 03:07:58,829 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-25 03:07:58,829 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-25 03:07:58,829 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-25 03:07:58,830 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-25 03:07:58,831 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 03:07:58,831 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 03:07:58,831 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 03:07:58,831 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-25 03:07:58,831 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-25 03:07:58,832 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-25 03:07:58,833 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-25 03:07:58,833 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 03:07:58,833 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-25 03:07:58,833 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-25 03:07:58,834 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-25 03:07:58,834 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 03:07:58,834 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 03:07:58,834 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 03:07:58,834 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 03:07:58,835 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-25 03:07:58,835 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 03:07:58,835 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 03:07:58,835 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-25 03:07:58,835 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true;
[2020-09-25 03:07:59,318 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 03:07:59,336 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 03:07:59,341 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 03:07:59,342 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-25 03:07:59,343 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-25 03:07:59,344 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1232a.c
[2020-09-25 03:07:59,431 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b85ad6ac/9c47d624137f4c62bae68912db86d347/FLAGafcf7ade1
[2020-09-25 03:07:59,997 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-25 03:07:59,998 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1232a.c
[2020-09-25 03:08:00,008 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b85ad6ac/9c47d624137f4c62bae68912db86d347/FLAGafcf7ade1
[2020-09-25 03:08:00,347 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b85ad6ac/9c47d624137f4c62bae68912db86d347
[2020-09-25 03:08:00,364 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 03:08:00,372 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 03:08:00,375 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 03:08:00,376 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 03:08:00,380 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 03:08:00,381 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:08:00" (1/1) ...
[2020-09-25 03:08:00,387 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e09f978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:00, skipping insertion in model container
[2020-09-25 03:08:00,387 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:08:00" (1/1) ...
[2020-09-25 03:08:00,398 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-25 03:08:00,431 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-25 03:08:00,706 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-25 03:08:00,711 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-25 03:08:00,745 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-25 03:08:00,861 INFO  L208         MainTranslator]: Completed translation
[2020-09-25 03:08:00,861 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:00 WrapperNode
[2020-09-25 03:08:00,862 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 03:08:00,863 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 03:08:00,863 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 03:08:00,863 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 03:08:00,881 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:00" (1/1) ...
[2020-09-25 03:08:00,881 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:00" (1/1) ...
[2020-09-25 03:08:00,892 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:00" (1/1) ...
[2020-09-25 03:08:00,893 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:00" (1/1) ...
[2020-09-25 03:08:00,904 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:00" (1/1) ...
[2020-09-25 03:08:00,911 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:00" (1/1) ...
[2020-09-25 03:08:00,915 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:00" (1/1) ...
[2020-09-25 03:08:00,918 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 03:08:00,919 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 03:08:00,919 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 03:08:00,919 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-25 03:08:00,921 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:00" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 03:08:00,994 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 03:08:00,994 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 03:08:00,994 INFO  L138     BoogieDeclarations]: Found implementation of procedure __fpclassify_float
[2020-09-25 03:08:00,994 INFO  L138     BoogieDeclarations]: Found implementation of procedure fmin_float
[2020-09-25 03:08:00,995 INFO  L138     BoogieDeclarations]: Found implementation of procedure __signbit_float
[2020-09-25 03:08:00,995 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 03:08:00,995 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 03:08:00,995 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float
[2020-09-25 03:08:00,995 INFO  L130     BoogieDeclarations]: Found specification of procedure __fpclassify_float
[2020-09-25 03:08:00,996 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-25 03:08:00,996 INFO  L130     BoogieDeclarations]: Found specification of procedure write~real
[2020-09-25 03:08:00,996 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-25 03:08:00,996 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-25 03:08:00,996 INFO  L130     BoogieDeclarations]: Found specification of procedure fmin_float
[2020-09-25 03:08:00,997 INFO  L130     BoogieDeclarations]: Found specification of procedure __signbit_float
[2020-09-25 03:08:00,997 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-25 03:08:00,997 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 03:08:00,997 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 03:08:00,997 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-25 03:08:00,998 INFO  L130     BoogieDeclarations]: Found specification of procedure read~real
[2020-09-25 03:08:01,445 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 03:08:01,445 INFO  L295             CfgBuilder]: Removed 4 assume(true) statements.
[2020-09-25 03:08:01,451 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:08:01 BoogieIcfgContainer
[2020-09-25 03:08:01,451 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 03:08:01,453 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 03:08:01,453 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 03:08:01,457 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-25 03:08:01,457 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:08:00" (1/3) ...
[2020-09-25 03:08:01,458 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a6ce93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:08:01, skipping insertion in model container
[2020-09-25 03:08:01,458 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:00" (2/3) ...
[2020-09-25 03:08:01,459 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a6ce93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:08:01, skipping insertion in model container
[2020-09-25 03:08:01,459 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:08:01" (3/3) ...
[2020-09-25 03:08:01,461 INFO  L109   eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c
[2020-09-25 03:08:01,471 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 03:08:01,482 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 03:08:01,504 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 03:08:01,532 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-25 03:08:01,532 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-25 03:08:01,532 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 03:08:01,533 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 03:08:01,533 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 03:08:01,533 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-25 03:08:01,533 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 03:08:01,533 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 03:08:01,556 INFO  L276                IsEmpty]: Start isEmpty. Operand 89 states.
[2020-09-25 03:08:01,566 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2020-09-25 03:08:01,566 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 03:08:01,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 03:08:01,568 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:08:01,575 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:08:01,575 INFO  L82        PathProgramCache]: Analyzing trace with hash -380814032, now seen corresponding path program 1 times
[2020-09-25 03:08:01,584 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:08:01,585 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226445555]
[2020-09-25 03:08:01,585 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:08:01,719 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:08:01,756 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:08:01,819 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:08:02,149 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:08:02,150 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 45
[2020-09-25 03:08:02,150 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 03:08:02,150 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 423
[2020-09-25 03:08:02,154 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:08:02,154 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 03:08:02,154 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 28
[2020-09-25 03:08:02,155 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-25 03:08:02,155 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-25 03:08:02,219 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 03:08:02,223 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:08:02,226 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:08:02,235 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:08:02,235 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 03:08:02,236 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:08:02,236 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-09-25 03:08:02,236 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:08:02,237 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 03:08:02,237 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 03:08:02,237 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 03:08:02,238 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 03:08:02,261 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-25 03:08:02,266 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:08:02,272 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:08:02,288 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:08:02,308 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:08:02,308 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 24
[2020-09-25 03:08:02,309 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 03:08:02,309 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 40
[2020-09-25 03:08:02,309 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:08:02,310 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 03:08:02,311 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 12
[2020-09-25 03:08:02,311 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-25 03:08:02,311 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-25 03:08:02,345 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 03:08:02,350 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:08:02,353 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:08:02,360 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:08:02,375 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:08:02,375 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 03:08:02,376 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 03:08:02,376 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 24
[2020-09-25 03:08:02,376 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:08:02,376 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 03:08:02,377 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 03:08:02,377 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-25 03:08:02,377 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 03:08:02,408 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 03:08:02,409 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226445555]
[2020-09-25 03:08:02,412 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 03:08:02,412 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-25 03:08:02,413 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253481479]
[2020-09-25 03:08:02,420 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-25 03:08:02,420 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 03:08:02,437 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-25 03:08:02,438 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-25 03:08:02,440 INFO  L87              Difference]: Start difference. First operand 89 states. Second operand 6 states.
[2020-09-25 03:08:02,822 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 03:08:02,822 INFO  L93              Difference]: Finished difference Result 169 states and 199 transitions.
[2020-09-25 03:08:02,823 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-09-25 03:08:02,824 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 34
[2020-09-25 03:08:02,825 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 03:08:02,840 INFO  L225             Difference]: With dead ends: 169
[2020-09-25 03:08:02,840 INFO  L226             Difference]: Without dead ends: 86
[2020-09-25 03:08:02,845 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-09-25 03:08:02,867 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 86 states.
[2020-09-25 03:08:02,905 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85.
[2020-09-25 03:08:02,907 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 85 states.
[2020-09-25 03:08:02,909 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions.
[2020-09-25 03:08:02,911 INFO  L78                 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 34
[2020-09-25 03:08:02,912 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 03:08:02,912 INFO  L479      AbstractCegarLoop]: Abstraction has 85 states and 94 transitions.
[2020-09-25 03:08:02,912 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-25 03:08:02,912 INFO  L276                IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions.
[2020-09-25 03:08:02,915 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2020-09-25 03:08:02,916 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 03:08:02,916 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 03:08:02,916 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 03:08:02,917 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:08:02,917 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:08:02,917 INFO  L82        PathProgramCache]: Analyzing trace with hash 619089939, now seen corresponding path program 1 times
[2020-09-25 03:08:02,917 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:08:02,918 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721522319]
[2020-09-25 03:08:02,918 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:08:02,943 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:08:02,964 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:08:03,132 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:08:03,133 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 57
[2020-09-25 03:08:03,133 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:08:03,133 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 187
[2020-09-25 03:08:03,134 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:08:03,134 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 03:08:03,134 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 40
[2020-09-25 03:08:03,135 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-25 03:08:03,135 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 03:08:03,173 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 03:08:03,176 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:08:03,178 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:08:03,188 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:08:03,188 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 03:08:03,189 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:08:03,189 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-09-25 03:08:03,189 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:08:03,189 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 03:08:03,190 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 03:08:03,190 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 03:08:03,190 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 03:08:03,214 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-25 03:08:03,230 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:08:03,244 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:08:03,340 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:08:03,341 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 36
[2020-09-25 03:08:03,341 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:08:03,341 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 107
[2020-09-25 03:08:03,342 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:08:03,342 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 03:08:03,342 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 24
[2020-09-25 03:08:03,342 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-25 03:08:03,342 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 03:08:03,365 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 03:08:03,379 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 03:08:03,388 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 03:08:03,445 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 03:08:03,446 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-25 03:08:03,446 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 03:08:03,446 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 65
[2020-09-25 03:08:03,447 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDEST
[2020-09-25 03:08:03,447 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 03:08:03,447 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 03:08:03,448 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-09-25 03:08:03,448 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 03:08:03,473 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 03:08:03,474 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721522319]
[2020-09-25 03:08:03,474 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 03:08:03,474 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-25 03:08:03,475 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846383636]
[2020-09-25 03:08:03,477 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-25 03:08:03,477 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 03:08:03,477 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-25 03:08:03,478 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-25 03:08:03,478 INFO  L87              Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 6 states.
[2020-09-25 03:08:03,740 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 03:08:03,740 INFO  L93              Difference]: Finished difference Result 121 states and 132 transitions.
[2020-09-25 03:08:03,741 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-09-25 03:08:03,741 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 46
[2020-09-25 03:08:03,741 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 03:08:03,744 INFO  L225             Difference]: With dead ends: 121
[2020-09-25 03:08:03,744 INFO  L226             Difference]: Without dead ends: 90
[2020-09-25 03:08:03,745 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-09-25 03:08:03,746 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 90 states.
[2020-09-25 03:08:03,757 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85.
[2020-09-25 03:08:03,757 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 85 states.
[2020-09-25 03:08:03,759 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions.
[2020-09-25 03:08:03,760 INFO  L78                 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 46
[2020-09-25 03:08:03,760 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 03:08:03,760 INFO  L479      AbstractCegarLoop]: Abstraction has 85 states and 94 transitions.
[2020-09-25 03:08:03,760 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-25 03:08:03,761 INFO  L276                IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions.
[2020-09-25 03:08:03,762 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2020-09-25 03:08:03,762 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 03:08:03,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 03:08:03,763 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 03:08:03,763 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 03:08:03,763 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 03:08:03,764 INFO  L82        PathProgramCache]: Analyzing trace with hash 1331564627, now seen corresponding path program 1 times
[2020-09-25 03:08:03,764 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 03:08:03,764 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596549436]
[2020-09-25 03:08:03,764 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 03:08:03,783 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-25 03:08:03,785 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-25 03:08:03,786 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-09-25 03:08:03,791 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-25 03:08:03,813 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:08:03 BoogieIcfgContainer
[2020-09-25 03:08:03,813 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 03:08:03,817 INFO  L168              Benchmark]: Toolchain (without parser) took 3449.19 ms. Allocated memory was 138.4 MB in the beginning and 232.8 MB in the end (delta: 94.4 MB). Free memory was 101.1 MB in the beginning and 110.6 MB in the end (delta: -9.5 MB). Peak memory consumption was 84.9 MB. Max. memory is 7.1 GB.
[2020-09-25 03:08:03,818 INFO  L168              Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-09-25 03:08:03,819 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 486.76 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 100.5 MB in the beginning and 180.7 MB in the end (delta: -80.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB.
[2020-09-25 03:08:03,820 INFO  L168              Benchmark]: Boogie Preprocessor took 55.83 ms. Allocated memory is still 201.9 MB. Free memory was 180.7 MB in the beginning and 178.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB.
[2020-09-25 03:08:03,821 INFO  L168              Benchmark]: RCFGBuilder took 532.79 ms. Allocated memory is still 201.9 MB. Free memory was 178.1 MB in the beginning and 154.6 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB.
[2020-09-25 03:08:03,822 INFO  L168              Benchmark]: TraceAbstraction took 2360.55 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 153.9 MB in the beginning and 110.6 MB in the end (delta: 43.3 MB). Peak memory consumption was 74.2 MB. Max. memory is 7.1 GB.
[2020-09-25 03:08:03,826 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 486.76 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 100.5 MB in the beginning and 180.7 MB in the end (delta: -80.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 55.83 ms. Allocated memory is still 201.9 MB. Free memory was 180.7 MB in the beginning and 178.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 532.79 ms. Allocated memory is still 201.9 MB. Free memory was 178.1 MB in the beginning and 154.6 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 2360.55 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 153.9 MB in the beginning and 110.6 MB in the end (delta: 43.3 MB). Peak memory consumption was 74.2 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable
    Unable to prove that call of __VERIFIER_error() unreachable
 Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 65. 
Possible FailurePath: 
[L64]                  float x = 0.0f;
[L65]                  float y = -0.0f;
[L66]      CALL, EXPR  fmin_float(x, y)
[L36]      CALL, EXPR  __fpclassify_float(x)
[L13]                  __uint32_t w;
[L16]                  ieee_float_shape_type gf_u;
[L17]                  gf_u.value = (x)
[L18]      EXPR        gf_u.word
[L18]                  (w) = gf_u.word
[L21]      COND FALSE  !(w == 0x00000000 || w == 0x80000000)
[L23-L24]  COND FALSE  !((w >= 0x00800000 && w <= 0x7f7fffff) ||
           (w >= 0x80800000 && w <= 0xff7fffff))
[L26-L27]  COND FALSE  !((w >= 0x00000001 && w <= 0x007fffff) ||
           (w >= 0x80000001 && w <= 0x807fffff))
[L29]      COND FALSE  !(w == 0x7f800000 || w == 0xff800000)
[L32]                  return 0;
[L36]      RET, EXPR   __fpclassify_float(x)
[L36]      COND TRUE   __fpclassify_float(x) == 0
[L37]                  return y;
[L66]      RET, EXPR   fmin_float(x, y)
[L66]                  float res = fmin_float(x, y);
[L69]      EXPR        res == -0.0f && __signbit_float(res) == 1
[L69]      COND TRUE   !(res == -0.0f && __signbit_float(res) == 1)
[L70]                  __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 6 procedures, 89 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 175 SDtfs, 36 SDslu, 431 SDs, 0 SdLazy, 254 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred 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, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 6312 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
Received shutdown request...