/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052b.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.0-b8ad66e
[2020-10-23 17:55:52,649 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-10-23 17:55:52,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-23 17:55:52,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-23 17:55:52,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-23 17:55:52,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-23 17:55:52,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-23 17:55:52,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-23 17:55:52,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-23 17:55:52,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-10-23 17:55:52,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-23 17:55:52,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-23 17:55:52,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-23 17:55:52,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-23 17:55:52,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-23 17:55:52,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-23 17:55:52,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-23 17:55:52,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-23 17:55:52,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-23 17:55:52,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-23 17:55:52,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-10-23 17:55:52,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
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[2020-10-23 17:55:52,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2020-10-23 17:55:52,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-10-23 17:55:52,782 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-10-23 17:55:52,838 INFO L113 SettingsManager]: Loading preferences was successful
[2020-10-23 17:55:52,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-23 17:55:52,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-23 17:55:52,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-10-23 17:55:52,845 INFO L138 SettingsManager]: * Use SBE=true
[2020-10-23 17:55:52,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-23 17:55:52,845 INFO L138 SettingsManager]: * sizeof long=4
[2020-10-23 17:55:52,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-10-23 17:55:52,846 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-10-23 17:55:52,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-10-23 17:55:52,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-10-23 17:55:52,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-23 17:55:52,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-10-23 17:55:52,847 INFO L138 SettingsManager]: * sizeof long double=12
[2020-10-23 17:55:52,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-10-23 17:55:52,848 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-10-23 17:55:52,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-10-23 17:55:52,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-23 17:55:52,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-10-23 17:55:52,849 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-10-23 17:55:52,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-10-23 17:55:52,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-23 17:55:52,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-23 17:55:52,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-10-23 17:55:52,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-23 17:55:52,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-10-23 17:55:52,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-23 17:55:52,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-23 17:55:52,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-10-23 17:55:52,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2020-10-23 17:55:53,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-23 17:55:53,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-23 17:55:53,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-23 17:55:53,333 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-10-23 17:55:53,334 INFO L275 PluginConnector]: CDTParser initialized
[2020-10-23 17:55:53,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052b.c
[2020-10-23 17:55:53,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f9b706d2/c8679d77fdc3489c963f9d8c432259ad/FLAGceb673b1b
[2020-10-23 17:55:54,045 INFO L306 CDTParser]: Found 1 translation units.
[2020-10-23 17:55:54,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1052b.c
[2020-10-23 17:55:54,056 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f9b706d2/c8679d77fdc3489c963f9d8c432259ad/FLAGceb673b1b
[2020-10-23 17:55:54,394 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f9b706d2/c8679d77fdc3489c963f9d8c432259ad
[2020-10-23 17:55:54,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-23 17:55:54,403 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-23 17:55:54,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-23 17:55:54,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-23 17:55:54,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-23 17:55:54,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:54" (1/1) ...
[2020-10-23 17:55:54,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ccaa4ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:54, skipping insertion in model container
[2020-10-23 17:55:54,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:54" (1/1) ...
[2020-10-23 17:55:54,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-10-23 17:55:54,459 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-10-23 17:55:54,627 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-10-23 17:55:54,637 INFO L203 MainTranslator]: Completed pre-run
[2020-10-23 17:55:54,664 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-10-23 17:55:54,689 INFO L208 MainTranslator]: Completed translation
[2020-10-23 17:55:54,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:54 WrapperNode
[2020-10-23 17:55:54,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-23 17:55:54,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-23 17:55:54,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-23 17:55:54,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-10-23 17:55:54,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:54" (1/1) ...
[2020-10-23 17:55:54,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:54" (1/1) ...
[2020-10-23 17:55:54,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:54" (1/1) ...
[2020-10-23 17:55:54,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:54" (1/1) ...
[2020-10-23 17:55:54,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:54" (1/1) ...
[2020-10-23 17:55:54,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:54" (1/1) ...
[2020-10-23 17:55:54,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:54" (1/1) ...
[2020-10-23 17:55:54,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-23 17:55:54,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-23 17:55:54,738 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-10-23 17:55:54,738 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-10-23 17:55:54,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:54" (1/1) ...
No working directory specified, using /storage/repos/ultimate/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
[2020-10-23 17:55:54,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-23 17:55:54,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-23 17:55:54,827 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-23 17:55:54,827 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float
[2020-10-23 17:55:54,827 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float
[2020-10-23 17:55:54,827 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-10-23 17:55:54,828 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-10-23 17:55:54,828 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-23 17:55:54,828 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-23 17:55:54,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-23 17:55:54,829 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float
[2020-10-23 17:55:54,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2020-10-23 17:55:54,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-10-23 17:55:54,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-23 17:55:54,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-10-23 17:55:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2020-10-23 17:55:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float
[2020-10-23 17:55:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-10-23 17:55:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-23 17:55:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-23 17:55:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-23 17:55:55,368 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-23 17:55:55,368 INFO L298 CfgBuilder]: Removed 6 assume(true) statements.
[2020-10-23 17:55:55,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:55:55 BoogieIcfgContainer
[2020-10-23 17:55:55,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-23 17:55:55,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-23 17:55:55,372 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-10-23 17:55:55,376 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-10-23 17:55:55,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:55:54" (1/3) ...
[2020-10-23 17:55:55,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6bd73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:55:55, skipping insertion in model container
[2020-10-23 17:55:55,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:54" (2/3) ...
[2020-10-23 17:55:55,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6bd73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:55:55, skipping insertion in model container
[2020-10-23 17:55:55,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:55:55" (3/3) ...
[2020-10-23 17:55:55,380 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052b.c
[2020-10-23 17:55:55,393 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2020-10-23 17:55:55,398 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-23 17:55:55,413 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-23 17:55:55,443 INFO L377 AbstractCegarLoop]: Interprodecural is true
[2020-10-23 17:55:55,443 INFO L378 AbstractCegarLoop]: Hoare is true
[2020-10-23 17:55:55,443 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP
[2020-10-23 17:55:55,443 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-23 17:55:55,444 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-23 17:55:55,444 INFO L382 AbstractCegarLoop]: Difference is false
[2020-10-23 17:55:55,444 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-23 17:55:55,447 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-23 17:55:55,471 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states.
[2020-10-23 17:55:55,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2020-10-23 17:55:55,480 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-23 17:55:55,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-23 17:55:55,482 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 17:55:55,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 17:55:55,501 INFO L82 PathProgramCache]: Analyzing trace with hash 414492769, now seen corresponding path program 1 times
[2020-10-23 17:55:55,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-23 17:55:55,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900421665]
[2020-10-23 17:55:55,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 17:55:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 17:55:55,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-23 17:55:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 17:55:55,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-10-23 17:55:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 17:55:55,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-10-23 17:55:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 17:55:55,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-23 17:55:55,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900421665]
[2020-10-23 17:55:55,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-23 17:55:55,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-23 17:55:55,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586227894]
[2020-10-23 17:55:55,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-23 17:55:55,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2020-10-23 17:55:55,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-23 17:55:55,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-23 17:55:55,956 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states.
[2020-10-23 17:55:56,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-23 17:55:56,175 INFO L93 Difference]: Finished difference Result 81 states and 113 transitions.
[2020-10-23 17:55:56,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-10-23 17:55:56,177 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25
[2020-10-23 17:55:56,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-23 17:55:56,187 INFO L225 Difference]: With dead ends: 81
[2020-10-23 17:55:56,188 INFO L226 Difference]: Without dead ends: 39
[2020-10-23 17:55:56,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-23 17:55:56,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2020-10-23 17:55:56,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39.
[2020-10-23 17:55:56,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states.
[2020-10-23 17:55:56,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions.
[2020-10-23 17:55:56,245 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 25
[2020-10-23 17:55:56,245 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-23 17:55:56,245 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions.
[2020-10-23 17:55:56,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-23 17:55:56,246 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions.
[2020-10-23 17:55:56,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2020-10-23 17:55:56,247 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-23 17:55:56,247 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]
[2020-10-23 17:55:56,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-23 17:55:56,248 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 17:55:56,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 17:55:56,253 INFO L82 PathProgramCache]: Analyzing trace with hash -573378902, now seen corresponding path program 1 times
[2020-10-23 17:55:56,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-23 17:55:56,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528162897]
[2020-10-23 17:55:56,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 17:55:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-23 17:55:56,345 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-10-23 17:55:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-23 17:55:56,458 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-10-23 17:55:56,512 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2020-10-23 17:55:56,513 INFO L523 BasicCegarLoop]: Counterexample might be feasible
[2020-10-23 17:55:56,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-23 17:55:56,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:55:56 BoogieIcfgContainer
[2020-10-23 17:55:56,573 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-10-23 17:55:56,576 INFO L168 Benchmark]: Toolchain (without parser) took 2175.27 ms. Allocated memory is still 162.5 MB. Free memory was 138.1 MB in the beginning and 88.6 MB in the end (delta: 49.5 MB). Peak memory consumption was 49.2 MB. Max. memory is 8.0 GB.
[2020-10-23 17:55:56,577 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 162.5 MB. Free memory is still 134.6 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2020-10-23 17:55:56,577 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.76 ms. Allocated memory is still 162.5 MB. Free memory was 137.4 MB in the beginning and 127.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB.
[2020-10-23 17:55:56,578 INFO L168 Benchmark]: Boogie Preprocessor took 45.16 ms. Allocated memory is still 162.5 MB. Free memory was 127.1 MB in the beginning and 125.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2020-10-23 17:55:56,579 INFO L168 Benchmark]: RCFGBuilder took 632.72 ms. Allocated memory is still 162.5 MB. Free memory was 125.3 MB in the beginning and 142.6 MB in the end (delta: -17.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB.
[2020-10-23 17:55:56,581 INFO L168 Benchmark]: TraceAbstraction took 1200.81 ms. Allocated memory is still 162.5 MB. Free memory was 142.0 MB in the beginning and 88.6 MB in the end (delta: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 8.0 GB.
[2020-10-23 17:55:56,585 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.21 ms. Allocated memory is still 162.5 MB. Free memory is still 134.6 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 285.76 ms. Allocated memory is still 162.5 MB. Free memory was 137.4 MB in the beginning and 127.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 45.16 ms. Allocated memory is still 162.5 MB. Free memory was 127.1 MB in the beginning and 125.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 632.72 ms. Allocated memory is still 162.5 MB. Free memory was 125.3 MB in the beginning and 142.6 MB in the end (delta: -17.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 1200.81 ms. Allocated memory is still 162.5 MB. Free memory was 142.0 MB in the beginning and 88.6 MB in the end (delta: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 46, overapproximation of bitwiseAnd at line 66.
Possible FailurePath:
[L13] static const float huge_floor = 1.0e30;
VAL [\old(huge_floor)=1000000000000000000000000000004, huge_floor=1000000000000000000000000000000]
[L77] float x = -1.0f / 0.0f;
VAL [huge_floor=1000000000000000000000000000000]
[L78] CALL, EXPR floor_float(x)
VAL [\old(x)=1000000000000000000000000000015, huge_floor=1000000000000000000000000000000]
[L16] __int32_t i0, j0;
[L17] __uint32_t i, ix;
VAL [\old(x)=1000000000000000000000000000015, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000015]
[L19] ieee_float_shape_type gf_u;
[L20] gf_u.value = (x)
[L21] EXPR gf_u.word
[L21] (i0) = gf_u.word
[L23] ix = (i0 & 0x7fffffff)
[L24] j0 = (ix >> 23) - 0x7f
VAL [\old(x)=1000000000000000000000000000015, huge_floor=1000000000000000000000000000000, i=-36028792723996673, i0=-1, j0=384, x=1000000000000000000000000000015]
[L25] COND FALSE !(j0 < 23)
VAL [\old(x)=1000000000000000000000000000015, huge_floor=1000000000000000000000000000000, i=-36028792723996673, i0=-1, j0=384, x=1000000000000000000000000000015]
[L45] COND TRUE !((ix) < 0x7f800000L)
[L46] return x + x;
VAL [\old(x)=1000000000000000000000000000015, huge_floor=1000000000000000000000000000000, i=-36028792723996673, i0=-1, j0=384, x=1000000000000000000000000000015]
[L78] RET, EXPR floor_float(x)
VAL [floor_float(x)=1000000000000000000000000000003, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000015]
[L78] float res = floor_float(x);
[L81] CALL, EXPR isinf_float(res)
VAL [\old(x)=1000000000000000000000000000003, huge_floor=1000000000000000000000000000000]
[L60] __int32_t ix;
VAL [\old(x)=1000000000000000000000000000003, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000003]
[L62] ieee_float_shape_type gf_u;
[L63] gf_u.value = (x)
[L64] EXPR gf_u.word
[L64] (ix) = gf_u.word
[L66] ix &= 0x7fffffff
[L67] return ((ix) == 0x7f800000L);
VAL [\old(x)=1000000000000000000000000000003, \result=0, huge_floor=1000000000000000000000000000000, ix=0, x=1000000000000000000000000000003]
[L81] RET, EXPR isinf_float(res)
VAL [huge_floor=1000000000000000000000000000000, isinf_float(res)=0, res=1000000000000000000000000000003, x=1000000000000000000000000000015]
[L81] COND TRUE !isinf_float(res)
[L82] CALL reach_error()
VAL [huge_floor=1000000000000000000000000000000]
[L3] __assert_fail("0", "float_req_bl_1052b.c", 3, "reach_error")
VAL [huge_floor=1000000000000000000000000000000]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 48 SDtfs, 8 SDslu, 41 SDs, 0 SdLazy, 46 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1944 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...