/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_1131b.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-36cd7be
[2021-02-23 13:13:25,393 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-02-23 13:13:25,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-02-23 13:13:25,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-02-23 13:13:25,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-02-23 13:13:25,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-02-23 13:13:25,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-02-23 13:13:25,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-02-23 13:13:25,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-02-23 13:13:25,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-02-23 13:13:25,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-02-23 13:13:25,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-02-23 13:13:25,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-02-23 13:13:25,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-02-23 13:13:25,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-02-23 13:13:25,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-02-23 13:13:25,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-02-23 13:13:25,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-02-23 13:13:25,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-02-23 13:13:25,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-02-23 13:13:25,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-02-23 13:13:25,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-02-23 13:13:25,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-02-23 13:13:25,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-02-23 13:13:25,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2021-02-23 13:13:25,539 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-02-23 13:13:25,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
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[2021-02-23 13:13:25,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-02-23 13:13:25,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
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[2021-02-23 13:13:25,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2021-02-23 13:13:25,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-02-23 13:13:25,557 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
[2021-02-23 13:13:25,625 INFO L113 SettingsManager]: Loading preferences was successful
[2021-02-23 13:13:25,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-02-23 13:13:25,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-02-23 13:13:25,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-02-23 13:13:25,631 INFO L138 SettingsManager]: * Use SBE=true
[2021-02-23 13:13:25,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-02-23 13:13:25,632 INFO L138 SettingsManager]: * sizeof long=4
[2021-02-23 13:13:25,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-02-23 13:13:25,632 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-02-23 13:13:25,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-02-23 13:13:25,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-02-23 13:13:25,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-02-23 13:13:25,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-02-23 13:13:25,635 INFO L138 SettingsManager]: * sizeof long double=12
[2021-02-23 13:13:25,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-02-23 13:13:25,635 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-02-23 13:13:25,635 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-02-23 13:13:25,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-02-23 13:13:25,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-02-23 13:13:25,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-02-23 13:13:25,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-02-23 13:13:25,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-02-23 13:13:25,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-02-23 13:13:25,637 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-02-23 13:13:25,637 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-02-23 13:13:25,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-02-23 13:13:25,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-02-23 13:13:25,638 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-02-23 13:13:25,638 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-02-23 13:13:26,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-02-23 13:13:26,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-02-23 13:13:26,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-02-23 13:13:26,084 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-02-23 13:13:26,085 INFO L275 PluginConnector]: CDTParser initialized
[2021-02-23 13:13:26,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c
[2021-02-23 13:13:26,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30010137b/f3360dbcdfab4788abc70ece69c0202c/FLAGf0e95a215
[2021-02-23 13:13:26,985 INFO L306 CDTParser]: Found 1 translation units.
[2021-02-23 13:13:26,985 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c
[2021-02-23 13:13:26,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30010137b/f3360dbcdfab4788abc70ece69c0202c/FLAGf0e95a215
[2021-02-23 13:13:27,317 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30010137b/f3360dbcdfab4788abc70ece69c0202c
[2021-02-23 13:13:27,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-02-23 13:13:27,331 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-02-23 13:13:27,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-02-23 13:13:27,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-02-23 13:13:27,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-02-23 13:13:27,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:13:27" (1/1) ...
[2021-02-23 13:13:27,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1933a9b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:27, skipping insertion in model container
[2021-02-23 13:13:27,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:13:27" (1/1) ...
[2021-02-23 13:13:27,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-02-23 13:13:27,373 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-02-23 13:13:27,561 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c[2947,2960]
[2021-02-23 13:13:27,564 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-23 13:13:27,576 INFO L203 MainTranslator]: Completed pre-run
[2021-02-23 13:13:27,615 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c[2947,2960]
[2021-02-23 13:13:27,616 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-23 13:13:27,635 INFO L208 MainTranslator]: Completed translation
[2021-02-23 13:13:27,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:27 WrapperNode
[2021-02-23 13:13:27,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-02-23 13:13:27,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-02-23 13:13:27,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-02-23 13:13:27,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-02-23 13:13:27,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:27" (1/1) ...
[2021-02-23 13:13:27,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:27" (1/1) ...
[2021-02-23 13:13:27,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:27" (1/1) ...
[2021-02-23 13:13:27,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:27" (1/1) ...
[2021-02-23 13:13:27,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:27" (1/1) ...
[2021-02-23 13:13:27,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:27" (1/1) ...
[2021-02-23 13:13:27,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:27" (1/1) ...
[2021-02-23 13:13:27,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-02-23 13:13:27,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-02-23 13:13:27,699 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-02-23 13:13:27,699 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-02-23 13:13:27,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:27" (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
[2021-02-23 13:13:27,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-02-23 13:13:27,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-02-23 13:13:27,804 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-02-23 13:13:27,805 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float
[2021-02-23 13:13:27,805 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float
[2021-02-23 13:13:27,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-02-23 13:13:27,805 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-02-23 13:13:27,805 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-02-23 13:13:27,805 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-02-23 13:13:27,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-02-23 13:13:27,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float
[2021-02-23 13:13:27,806 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float
[2021-02-23 13:13:27,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2021-02-23 13:13:27,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-02-23 13:13:27,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-02-23 13:13:27,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2021-02-23 13:13:27,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-02-23 13:13:27,807 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float
[2021-02-23 13:13:27,807 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-02-23 13:13:27,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-02-23 13:13:27,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-02-23 13:13:27,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real
[2021-02-23 13:13:27,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-02-23 13:13:28,391 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-02-23 13:13:28,391 INFO L299 CfgBuilder]: Removed 14 assume(true) statements.
[2021-02-23 13:13:28,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:13:28 BoogieIcfgContainer
[2021-02-23 13:13:28,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-02-23 13:13:28,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-02-23 13:13:28,396 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-02-23 13:13:28,399 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-02-23 13:13:28,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:13:27" (1/3) ...
[2021-02-23 13:13:28,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b4b9c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:13:28, skipping insertion in model container
[2021-02-23 13:13:28,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:27" (2/3) ...
[2021-02-23 13:13:28,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b4b9c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:13:28, skipping insertion in model container
[2021-02-23 13:13:28,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:13:28" (3/3) ...
[2021-02-23 13:13:28,402 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c
[2021-02-23 13:13:28,409 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-02-23 13:13:28,415 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-02-23 13:13:28,436 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-02-23 13:13:28,466 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-02-23 13:13:28,466 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-02-23 13:13:28,467 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-02-23 13:13:28,467 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-02-23 13:13:28,467 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-02-23 13:13:28,467 INFO L381 AbstractCegarLoop]: Difference is false
[2021-02-23 13:13:28,467 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-02-23 13:13:28,468 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-02-23 13:13:28,488 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states.
[2021-02-23 13:13:28,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2021-02-23 13:13:28,495 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-23 13:13:28,496 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]
[2021-02-23 13:13:28,497 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-23 13:13:28,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-23 13:13:28,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1365987300, now seen corresponding path program 1 times
[2021-02-23 13:13:28,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-23 13:13:28,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269911342]
[2021-02-23 13:13:28,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-23 13:13:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-23 13:13:28,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:13:28,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 13:13:28,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:13:28,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 13:13:28,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-23 13:13:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-23 13:13:28,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:13:28,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 13:13:28,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2021-02-23 13:13:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-23 13:13:28,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:13:28,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 13:13:28,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:13:28,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 13:13:28,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2021-02-23 13:13:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-23 13:13:28,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:13:28,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 13:13:28,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:13:28,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 13:13:28,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-23 13:13:28,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269911342]
[2021-02-23 13:13:28,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-23 13:13:28,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-02-23 13:13:28,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598917482]
[2021-02-23 13:13:28,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-02-23 13:13:28,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-23 13:13:29,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-02-23 13:13:29,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-02-23 13:13:29,020 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states.
[2021-02-23 13:13:29,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-23 13:13:29,383 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions.
[2021-02-23 13:13:29,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-02-23 13:13:29,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25
[2021-02-23 13:13:29,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-23 13:13:29,400 INFO L225 Difference]: With dead ends: 112
[2021-02-23 13:13:29,400 INFO L226 Difference]: Without dead ends: 55
[2021-02-23 13:13:29,405 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
[2021-02-23 13:13:29,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2021-02-23 13:13:29,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55.
[2021-02-23 13:13:29,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states.
[2021-02-23 13:13:29,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions.
[2021-02-23 13:13:29,476 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25
[2021-02-23 13:13:29,476 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-23 13:13:29,477 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions.
[2021-02-23 13:13:29,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2021-02-23 13:13:29,477 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions.
[2021-02-23 13:13:29,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2021-02-23 13:13:29,479 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-23 13:13:29,480 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]
[2021-02-23 13:13:29,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-02-23 13:13:29,481 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-23 13:13:29,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-23 13:13:29,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1407551246, now seen corresponding path program 1 times
[2021-02-23 13:13:29,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-23 13:13:29,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267416499]
[2021-02-23 13:13:29,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-23 13:13:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-02-23 13:13:29,652 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-02-23 13:13:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-02-23 13:13:29,704 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-02-23 13:13:29,742 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-02-23 13:13:29,743 INFO L523 BasicCegarLoop]: Counterexample might be feasible
[2021-02-23 13:13:29,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-02-23 13:13:29,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:13:29 BoogieIcfgContainer
[2021-02-23 13:13:29,789 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-02-23 13:13:29,792 INFO L168 Benchmark]: Toolchain (without parser) took 2469.25 ms. Allocated memory is still 168.8 MB. Free memory was 144.0 MB in the beginning and 66.1 MB in the end (delta: 77.9 MB). Peak memory consumption was 78.7 MB. Max. memory is 8.0 GB.
[2021-02-23 13:13:29,792 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 168.8 MB. Free memory is still 143.7 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-02-23 13:13:29,793 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.50 ms. Allocated memory is still 168.8 MB. Free memory was 142.8 MB in the beginning and 131.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB.
[2021-02-23 13:13:29,794 INFO L168 Benchmark]: Boogie Preprocessor took 60.39 ms. Allocated memory is still 168.8 MB. Free memory was 131.1 MB in the beginning and 129.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2021-02-23 13:13:29,795 INFO L168 Benchmark]: RCFGBuilder took 694.87 ms. Allocated memory is still 168.8 MB. Free memory was 129.0 MB in the beginning and 135.3 MB in the end (delta: -6.3 MB). Peak memory consumption was 13.7 MB. Max. memory is 8.0 GB.
[2021-02-23 13:13:29,796 INFO L168 Benchmark]: TraceAbstraction took 1394.18 ms. Allocated memory is still 168.8 MB. Free memory was 134.8 MB in the beginning and 66.1 MB in the end (delta: 68.7 MB). Peak memory consumption was 69.2 MB. Max. memory is 8.0 GB.
[2021-02-23 13:13:29,800 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.27 ms. Allocated memory is still 168.8 MB. Free memory is still 143.7 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 303.50 ms. Allocated memory is still 168.8 MB. Free memory was 142.8 MB in the beginning and 131.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 60.39 ms. Allocated memory is still 168.8 MB. Free memory was 131.1 MB in the beginning and 129.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 694.87 ms. Allocated memory is still 168.8 MB. Free memory was 129.0 MB in the beginning and 135.3 MB in the end (delta: -6.3 MB). Peak memory consumption was 13.7 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 1394.18 ms. Allocated memory is still 168.8 MB. Free memory was 134.8 MB in the beginning and 66.1 MB in the end (delta: 68.7 MB). Peak memory consumption was 69.2 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 137]: Unable to prove that call to reach_error is unreachable
Unable to prove that call to reach_error is unreachable
Reason: overapproximation of someBinaryFLOATComparisonOperation at line 136, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseXor at line 33.
Possible FailurePath:
[L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = {
0.0,
-0.0,
};
VAL [\old(one_fmod)=4294967309, \old(Zero_fmod)=4294967308, \old(Zero_fmod)=4294967302, one_fmod=1, Zero_fmod={5:0}]
[L128] float x = __VERIFIER_nondet_float();
[L129] float y = -1.0f / 0.0f;
VAL [one_fmod=1, x=4294967300, Zero_fmod={5:0}]
[L131] CALL isfinite_float(x)
VAL [\old(x)=4294967300, one_fmod=1, Zero_fmod={5:0}]
[L111] __int32_t ix;
VAL [\old(x)=4294967300, one_fmod=1, x=4294967300, Zero_fmod={5:0}]
[L113] ieee_float_shape_type gf_u;
[L114] gf_u.value = (x)
[L115] EXPR gf_u.word
[L115] (ix) = gf_u.word
[L117] ix &= 0x7fffffff
[L118] return (((ix) < 0x7f800000L));
VAL [\old(x)=4294967300, \result=1, ix=2139095039, one_fmod=1, x=4294967300, Zero_fmod={5:0}]
[L131] RET isfinite_float(x)
VAL [isfinite_float(x)=1, one_fmod=1, x=4294967300, Zero_fmod={5:0}]
[L131] COND TRUE isfinite_float(x)
[L133] CALL, EXPR fmod_float(x, y)
VAL [\old(x)=4294967300, \old(y)=4294967299, one_fmod=1, Zero_fmod={5:0}]
[L20] __int32_t n, hx, hy, hz, ix, iy, sx, i;
VAL [\old(x)=4294967300, \old(y)=4294967299, one_fmod=1, x=4294967300, y=4294967299, Zero_fmod={5:0}]
[L23] ieee_float_shape_type gf_u;
[L24] gf_u.value = (x)
[L25] EXPR gf_u.word
[L25] (hx) = gf_u.word
[L28] ieee_float_shape_type gf_u;
[L29] gf_u.value = (y)
[L30] EXPR gf_u.word
[L30] (hy) = gf_u.word
[L32] sx = hx & 0x80000000
[L33] hx ^= sx
[L34] hy &= 0x7fffffff
VAL [\old(x)=4294967300, \old(y)=4294967299, one_fmod=1, sx=13, x=4294967300, y=4294967299, Zero_fmod={5:0}]
[L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L)
[L37] return (x * y) / (x * y);
VAL [\old(x)=4294967300, \old(y)=4294967299, hx=2139095040, hy=0, one_fmod=1, sx=13, x=4294967300, y=4294967299, Zero_fmod={5:0}]
[L133] RET, EXPR fmod_float(x, y)
VAL [fmod_float(x, y)=4294967298, one_fmod=1, x=4294967300, y=4294967299, Zero_fmod={5:0}]
[L133] float res = fmod_float(x, y);
[L136] COND TRUE res != x
VAL [one_fmod=1, res=4294967298, x=4294967300, y=4294967299, Zero_fmod={5:0}]
[L137] reach_error()
VAL [one_fmod=1, res=4294967298, x=4294967300, y=4294967299, Zero_fmod={5:0}]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 6 SDslu, 63 SDs, 0 SdLazy, 78 SolverSat, 6 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=60occurred 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, 0.3s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 2088 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...