/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1091.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-24 19:17:37,419 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-24 19:17:37,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 19:17:37,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 19:17:37,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 19:17:37,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 19:17:37,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 19:17:37,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 19:17:37,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 19:17:37,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 19:17:37,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 19:17:37,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 19:17:37,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 19:17:37,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 19:17:37,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 19:17:37,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 19:17:37,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 19:17:37,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 19:17:37,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 19:17:37,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 19:17:37,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 19:17:37,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 19:17:37,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 19:17:37,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 19:17:37,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 19:17:37,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 19:17:37,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 19:17:37,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 19:17:37,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 19:17:37,539 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 19:17:37,539 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 19:17:37,540 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 19:17:37,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 19:17:37,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 19:17:37,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 19:17:37,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 19:17:37,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 19:17:37,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 19:17:37,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 19:17:37,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 19:17:37,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 19:17:37,549 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-09-24 19:17:37,591 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-24 19:17:37,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 19:17:37,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 19:17:37,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-24 19:17:37,593 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-24 19:17:37,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 19:17:37,594 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-24 19:17:37,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-24 19:17:37,594 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-24 19:17:37,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-24 19:17:37,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 19:17:37,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 19:17:37,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 19:17:37,595 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-24 19:17:37,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-24 19:17:37,596 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-24 19:17:37,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-24 19:17:37,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 19:17:37,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-24 19:17:37,596 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-24 19:17:37,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-24 19:17:37,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 19:17:37,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 19:17:37,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 19:17:37,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 19:17:37,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-24 19:17:37,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 19:17:37,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 19:17:37,598 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-24 19:17:37,599 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true;
[2020-09-24 19:17:38,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 19:17:38,133 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 19:17:38,140 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 19:17:38,142 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-24 19:17:38,143 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-24 19:17:38,144 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1091.c
[2020-09-24 19:17:38,239 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14020baf3/fa6ef15d341948488b6798db5c472f15/FLAG21430ad59
[2020-09-24 19:17:38,780 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-24 19:17:38,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1091.c
[2020-09-24 19:17:38,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14020baf3/fa6ef15d341948488b6798db5c472f15/FLAG21430ad59
[2020-09-24 19:17:39,136 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14020baf3/fa6ef15d341948488b6798db5c472f15
[2020-09-24 19:17:39,150 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 19:17:39,157 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 19:17:39,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 19:17:39,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 19:17:39,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 19:17:39,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:17:39" (1/1) ...
[2020-09-24 19:17:39,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c096cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:39, skipping insertion in model container
[2020-09-24 19:17:39,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:17:39" (1/1) ...
[2020-09-24 19:17:39,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-24 19:17:39,214 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-24 19:17:39,571 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 19:17:39,578 INFO L203 MainTranslator]: Completed pre-run
[2020-09-24 19:17:39,631 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 19:17:39,744 INFO L208 MainTranslator]: Completed translation
[2020-09-24 19:17:39,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:39 WrapperNode
[2020-09-24 19:17:39,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 19:17:39,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 19:17:39,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 19:17:39,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 19:17:39,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:39" (1/1) ...
[2020-09-24 19:17:39,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:39" (1/1) ...
[2020-09-24 19:17:39,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:39" (1/1) ...
[2020-09-24 19:17:39,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:39" (1/1) ...
[2020-09-24 19:17:39,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:39" (1/1) ...
[2020-09-24 19:17:39,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:39" (1/1) ...
[2020-09-24 19:17:39,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:39" (1/1) ...
[2020-09-24 19:17:39,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 19:17:39,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 19:17:39,809 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 19:17:39,809 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-24 19:17:39,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:39" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 19:17:39,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 19:17:39,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 19:17:39,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float
[2020-09-24 19:17:39,893 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float
[2020-09-24 19:17:39,894 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 19:17:39,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 19:17:39,894 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float
[2020-09-24 19:17:39,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 19:17:39,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2020-09-24 19:17:39,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 19:17:39,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 19:17:39,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 19:17:39,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2020-09-24 19:17:39,895 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float
[2020-09-24 19:17:39,896 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-24 19:17:39,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 19:17:39,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 19:17:40,337 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 19:17:40,338 INFO L295 CfgBuilder]: Removed 4 assume(true) statements.
[2020-09-24 19:17:40,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:17:40 BoogieIcfgContainer
[2020-09-24 19:17:40,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 19:17:40,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 19:17:40,351 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 19:17:40,355 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-24 19:17:40,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:17:39" (1/3) ...
[2020-09-24 19:17:40,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e4a983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:17:40, skipping insertion in model container
[2020-09-24 19:17:40,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:39" (2/3) ...
[2020-09-24 19:17:40,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e4a983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:17:40, skipping insertion in model container
[2020-09-24 19:17:40,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:17:40" (3/3) ...
[2020-09-24 19:17:40,360 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c
[2020-09-24 19:17:40,372 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 19:17:40,382 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 19:17:40,404 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 19:17:40,431 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-24 19:17:40,431 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-24 19:17:40,431 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 19:17:40,431 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 19:17:40,431 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 19:17:40,431 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-24 19:17:40,431 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 19:17:40,432 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 19:17:40,457 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states.
[2020-09-24 19:17:40,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2020-09-24 19:17:40,466 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 19:17:40,468 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]
[2020-09-24 19:17:40,468 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 19:17:40,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 19:17:40,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1889128291, now seen corresponding path program 1 times
[2020-09-24 19:17:40,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 19:17:40,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659252961]
[2020-09-24 19:17:40,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 19:17:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 19:17:40,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:17:40,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000
[2020-09-24 19:17:40,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45
[2020-09-24 19:17:40,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 19:17:40,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215
[2020-09-24 19:17:40,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 19:17:40,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 19:17:40,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24
[2020-09-24 19:17:40,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 19:17:40,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-24 19:17:40,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 19:17:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 19:17:40,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:17:40,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000
[2020-09-24 19:17:40,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-24 19:17:40,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 19:17:40,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 19:17:40,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 19:17:40,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 19:17:40,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 19:17:40,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 19:17:40,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 19:17:41,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-24 19:17:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 19:17:41,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:17:41,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000
[2020-09-24 19:17:41,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19
[2020-09-24 19:17:41,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 19:17:41,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40
[2020-09-24 19:17:41,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 19:17:41,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 19:17:41,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8
[2020-09-24 19:17:41,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 19:17:41,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 19:17:41,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2020-09-24 19:17:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 19:17:41,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:17:41,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000
[2020-09-24 19:17:41,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-24 19:17:41,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 19:17:41,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-24 19:17:41,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 19:17:41,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 19:17:41,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7
[2020-09-24 19:17:41,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 19:17:41,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 19:17:41,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 19:17:41,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659252961]
[2020-09-24 19:17:41,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 19:17:41,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 19:17:41,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361138052]
[2020-09-24 19:17:41,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 19:17:41,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 19:17:41,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 19:17:41,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 19:17:41,126 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states.
[2020-09-24 19:17:41,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 19:17:41,392 INFO L93 Difference]: Finished difference Result 136 states and 162 transitions.
[2020-09-24 19:17:41,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2020-09-24 19:17:41,394 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34
[2020-09-24 19:17:41,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 19:17:41,410 INFO L225 Difference]: With dead ends: 136
[2020-09-24 19:17:41,411 INFO L226 Difference]: Without dead ends: 69
[2020-09-24 19:17:41,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-09-24 19:17:41,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states.
[2020-09-24 19:17:41,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69.
[2020-09-24 19:17:41,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states.
[2020-09-24 19:17:41,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions.
[2020-09-24 19:17:41,474 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 34
[2020-09-24 19:17:41,475 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 19:17:41,475 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions.
[2020-09-24 19:17:41,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 19:17:41,475 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions.
[2020-09-24 19:17:41,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2020-09-24 19:17:41,477 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 19:17:41,478 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]
[2020-09-24 19:17:41,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 19:17:41,478 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 19:17:41,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 19:17:41,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1353425746, now seen corresponding path program 1 times
[2020-09-24 19:17:41,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 19:17:41,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714864653]
[2020-09-24 19:17:41,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 19:17:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-24 19:17:41,539 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-24 19:17:41,539 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-24 19:17:41,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 19:17:41,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:17:41 BoogieIcfgContainer
[2020-09-24 19:17:41,578 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 19:17:41,582 INFO L168 Benchmark]: Toolchain (without parser) took 2427.88 ms. Allocated memory was 116.9 MB in the beginning and 185.6 MB in the end (delta: 68.7 MB). Free memory was 74.3 MB in the beginning and 136.9 MB in the end (delta: -62.6 MB). Peak memory consumption was 6.1 MB. Max. memory is 7.1 GB.
[2020-09-24 19:17:41,583 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 116.9 MB. Free memory was 91.8 MB in the beginning and 91.7 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB.
[2020-09-24 19:17:41,584 INFO L168 Benchmark]: CACSL2BoogieTranslator took 588.66 ms. Allocated memory was 116.9 MB in the beginning and 169.3 MB in the end (delta: 52.4 MB). Free memory was 73.7 MB in the beginning and 155.2 MB in the end (delta: -81.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB.
[2020-09-24 19:17:41,585 INFO L168 Benchmark]: Boogie Preprocessor took 61.12 ms. Allocated memory is still 169.3 MB. Free memory was 155.2 MB in the beginning and 153.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB.
[2020-09-24 19:17:41,586 INFO L168 Benchmark]: RCFGBuilder took 538.66 ms. Allocated memory is still 169.3 MB. Free memory was 152.8 MB in the beginning and 131.5 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB.
[2020-09-24 19:17:41,587 INFO L168 Benchmark]: TraceAbstraction took 1227.13 ms. Allocated memory was 169.3 MB in the beginning and 185.6 MB in the end (delta: 16.3 MB). Free memory was 131.0 MB in the beginning and 136.9 MB in the end (delta: -5.9 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB.
[2020-09-24 19:17:41,591 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.26 ms. Allocated memory is still 116.9 MB. Free memory was 91.8 MB in the beginning and 91.7 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 588.66 ms. Allocated memory was 116.9 MB in the beginning and 169.3 MB in the end (delta: 52.4 MB). Free memory was 73.7 MB in the beginning and 155.2 MB in the end (delta: -81.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 61.12 ms. Allocated memory is still 169.3 MB. Free memory was 155.2 MB in the beginning and 153.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 538.66 ms. Allocated memory is still 169.3 MB. Free memory was 152.8 MB in the beginning and 131.5 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1227.13 ms. Allocated memory was 169.3 MB in the beginning and 185.6 MB in the end (delta: 16.3 MB). Free memory was 131.0 MB in the beginning and 136.9 MB in the end (delta: -5.9 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 72]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of someBinaryFLOATComparisonOperation at line 57, overapproximation of someBinaryArithmeticFLOAToperation at line 44, overapproximation of bitwiseAnd at line 21.
Possible FailurePath:
[L11] static const float huge_ceil = 1.0e30;
[L66] float x = 0.0f / 0.0f;
[L68] CALL, EXPR ceil_float(x)
[L14] __int32_t i0, j0;
[L15] __uint32_t i, ix;
[L17] ieee_float_shape_type gf_u;
[L18] gf_u.value = (x)
[L19] EXPR gf_u.word
[L19] (i0) = gf_u.word
[L21] ix = (i0 & 0x7fffffff)
[L22] j0 = (ix >> 23) - 0x7f
[L23] COND FALSE !(j0 < 23)
[L43] COND TRUE !((ix) < 0x7f800000L)
[L44] return x + x;
[L68] RET, EXPR ceil_float(x)
[L68] float res = ceil_float(x);
[L71] CALL, EXPR isnan_float(res)
[L57] return x != x;
[L71] RET, EXPR isnan_float(res)
[L71] COND TRUE !isnan_float(res)
[L72] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 19 SDslu, 58 SDs, 0 SdLazy, 83 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 1881 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...