/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/floats-cbmc-regression/float-no-simp6.c
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This is Ultimate 0.1.25-c90d42b
[2020-09-24 18:09:59,987 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-24 18:09:59,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 18:10:00,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 18:10:00,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 18:10:00,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 18:10:00,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 18:10:00,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 18:10:00,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 18:10:00,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 18:10:00,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 18:10:00,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 18:10:00,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 18:10:00,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 18:10:00,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 18:10:00,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 18:10:00,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 18:10:00,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 18:10:00,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 18:10:00,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 18:10:00,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 18:10:00,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 18:10:00,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 18:10:00,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 18:10:00,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 18:10:00,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 18:10:00,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 18:10:00,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 18:10:00,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 18:10:00,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 18:10:00,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 18:10:00,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 18:10:00,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 18:10:00,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 18:10:00,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 18:10:00,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 18:10:00,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 18:10:00,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 18:10:00,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 18:10:00,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 18:10:00,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 18:10:00,115 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 18:10:00,159 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-24 18:10:00,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 18:10:00,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 18:10:00,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-24 18:10:00,163 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-24 18:10:00,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 18:10:00,163 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-24 18:10:00,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-24 18:10:00,164 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-24 18:10:00,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-24 18:10:00,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 18:10:00,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 18:10:00,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 18:10:00,166 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-24 18:10:00,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-24 18:10:00,166 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-24 18:10:00,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-24 18:10:00,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 18:10:00,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-24 18:10:00,167 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-24 18:10:00,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-24 18:10:00,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 18:10:00,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 18:10:00,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 18:10:00,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 18:10:00,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-24 18:10:00,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 18:10:00,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 18:10:00,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-24 18:10:00,169 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=SMALLEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true;
[2020-09-24 18:10:00,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 18:10:00,667 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 18:10:00,672 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 18:10:00,673 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-24 18:10:00,674 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-24 18:10:00,675 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float-no-simp6.c
[2020-09-24 18:10:00,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52faf3029/4da2ed6263f34f8a9ef320f7fe1f1cce/FLAG46b67087b
[2020-09-24 18:10:01,315 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-24 18:10:01,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/floats-cbmc-regression/float-no-simp6.c
[2020-09-24 18:10:01,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52faf3029/4da2ed6263f34f8a9ef320f7fe1f1cce/FLAG46b67087b
[2020-09-24 18:10:01,663 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52faf3029/4da2ed6263f34f8a9ef320f7fe1f1cce
[2020-09-24 18:10:01,678 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 18:10:01,685 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 18:10:01,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 18:10:01,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 18:10:01,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 18:10:01,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:10:01" (1/1) ...
[2020-09-24 18:10:01,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f58caab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:01, skipping insertion in model container
[2020-09-24 18:10:01,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:10:01" (1/1) ...
[2020-09-24 18:10:01,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-24 18:10:01,737 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-24 18:10:01,991 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 18:10:02,004 INFO L203 MainTranslator]: Completed pre-run
[2020-09-24 18:10:02,031 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 18:10:02,050 INFO L208 MainTranslator]: Completed translation
[2020-09-24 18:10:02,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:02 WrapperNode
[2020-09-24 18:10:02,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 18:10:02,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 18:10:02,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 18:10:02,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 18:10:02,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:02" (1/1) ...
[2020-09-24 18:10:02,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:02" (1/1) ...
[2020-09-24 18:10:02,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:02" (1/1) ...
[2020-09-24 18:10:02,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:02" (1/1) ...
[2020-09-24 18:10:02,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:02" (1/1) ...
[2020-09-24 18:10:02,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:02" (1/1) ...
[2020-09-24 18:10:02,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:02" (1/1) ...
[2020-09-24 18:10:02,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 18:10:02,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 18:10:02,177 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 18:10:02,177 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-24 18:10:02,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:02" (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 18:10:02,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 18:10:02,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 18:10:02,255 INFO L138 BoogieDeclarations]: Found implementation of procedure multiply
[2020-09-24 18:10:02,256 INFO L138 BoogieDeclarations]: Found implementation of procedure divide
[2020-09-24 18:10:02,256 INFO L138 BoogieDeclarations]: Found implementation of procedure cast
[2020-09-24 18:10:02,256 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 18:10:02,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 18:10:02,256 INFO L130 BoogieDeclarations]: Found specification of procedure multiply
[2020-09-24 18:10:02,257 INFO L130 BoogieDeclarations]: Found specification of procedure divide
[2020-09-24 18:10:02,257 INFO L130 BoogieDeclarations]: Found specification of procedure cast
[2020-09-24 18:10:02,257 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-24 18:10:02,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 18:10:02,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 18:10:02,519 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 18:10:02,520 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-24 18:10:02,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:10:02 BoogieIcfgContainer
[2020-09-24 18:10:02,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 18:10:02,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 18:10:02,534 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 18:10:02,545 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-24 18:10:02,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:10:01" (1/3) ...
[2020-09-24 18:10:02,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9e4fb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:10:02, skipping insertion in model container
[2020-09-24 18:10:02,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:02" (2/3) ...
[2020-09-24 18:10:02,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9e4fb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:10:02, skipping insertion in model container
[2020-09-24 18:10:02,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:10:02" (3/3) ...
[2020-09-24 18:10:02,552 INFO L109 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c
[2020-09-24 18:10:02,564 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 18:10:02,577 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations.
[2020-09-24 18:10:02,600 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2020-09-24 18:10:02,631 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-24 18:10:02,631 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-24 18:10:02,631 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 18:10:02,631 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 18:10:02,631 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 18:10:02,631 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-24 18:10:02,632 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 18:10:02,632 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 18:10:02,653 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states.
[2020-09-24 18:10:02,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-09-24 18:10:02,659 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 18:10:02,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 18:10:02,661 INFO L427 AbstractCegarLoop]: === Iteration 1 === [castErr0ASSERT_VIOLATIONERROR_FUNCTION, divideErr0ASSERT_VIOLATIONERROR_FUNCTION, multiplyErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 18:10:02,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 18:10:02,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1968128724, now seen corresponding path program 1 times
[2020-09-24 18:10:02,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 18:10:02,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792206595]
[2020-09-24 18:10:02,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 18:10:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-24 18:10:02,779 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-24 18:10:02,779 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-24 18:10:02,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 18:10:02,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:10:02 BoogieIcfgContainer
[2020-09-24 18:10:02,800 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 18:10:02,804 INFO L168 Benchmark]: Toolchain (without parser) took 1122.22 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 103.6 MB in the beginning and 157.8 MB in the end (delta: -54.2 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB.
[2020-09-24 18:10:02,805 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-09-24 18:10:02,806 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.29 ms. Allocated memory is still 147.3 MB. Free memory was 103.0 MB in the beginning and 91.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB.
[2020-09-24 18:10:02,807 INFO L168 Benchmark]: Boogie Preprocessor took 124.37 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 91.7 MB in the beginning and 181.8 MB in the end (delta: -90.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB.
[2020-09-24 18:10:02,808 INFO L168 Benchmark]: RCFGBuilder took 350.68 ms. Allocated memory is still 203.4 MB. Free memory was 181.8 MB in the beginning and 169.1 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB.
[2020-09-24 18:10:02,809 INFO L168 Benchmark]: TraceAbstraction took 266.27 ms. Allocated memory is still 203.4 MB. Free memory was 168.5 MB in the beginning and 157.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB.
[2020-09-24 18:10:02,814 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 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 365.29 ms. Allocated memory is still 147.3 MB. Free memory was 103.0 MB in the beginning and 91.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 124.37 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 91.7 MB in the beginning and 181.8 MB in the end (delta: -90.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 350.68 ms. Allocated memory is still 203.4 MB. Free memory was 181.8 MB in the beginning and 169.1 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 266.27 ms. Allocated memory is still 203.4 MB. Free memory was 168.5 MB in the beginning and 157.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 23]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of someBinaryFLOATComparisonOperation at line 23, overapproximation of someBinaryArithmeticFLOAToperation at line 21.
Possible FailurePath:
[L47] CALL multiply()
[L18] float f1=0x1.000000p-1f;
[L19] float f2=0x1.fffffep-126f;
[L21] float res = f1 * f2;
[L23] COND TRUE !(res == 0x1.0p-126f)
[L23] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 34 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...