/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/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052d.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-36cd7be
[2021-02-24 03:56:02,008 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-02-24 03:56:02,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-02-24 03:56:02,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-02-24 03:56:02,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-02-24 03:56:02,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-02-24 03:56:02,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-02-24 03:56:02,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
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[2021-02-24 03:56:02,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
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[2021-02-24 03:56:02,103 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-02-24 03:56:02,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-02-24 03:56:02,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-02-24 03:56:02,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-02-24 03:56:02,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-02-24 03:56:02,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-02-24 03:56:02,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-02-24 03:56:02,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-02-24 03:56:02,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-02-24 03:56:02,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-02-24 03:56:02,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2021-02-24 03:56:02,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2021-02-24 03:56:02,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-02-24 03:56:02,138 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf
[2021-02-24 03:56:02,161 INFO L113 SettingsManager]: Loading preferences was successful
[2021-02-24 03:56:02,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-02-24 03:56:02,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-02-24 03:56:02,166 INFO L138 SettingsManager]: * sizeof long=4
[2021-02-24 03:56:02,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-02-24 03:56:02,166 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-02-24 03:56:02,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-02-24 03:56:02,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-02-24 03:56:02,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-02-24 03:56:02,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-02-24 03:56:02,168 INFO L138 SettingsManager]: * sizeof long double=12
[2021-02-24 03:56:02,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-02-24 03:56:02,168 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-02-24 03:56:02,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-02-24 03:56:02,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-02-24 03:56:02,169 INFO L138 SettingsManager]: * Size of a code block=SingleStatement
[2021-02-24 03:56:02,169 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-02-24 03:56:02,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-02-24 03:56:02,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-02-24 03:56:02,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-02-24 03:56:02,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2021-02-24 03:56:02,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-02-24 03:56:02,170 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX
[2021-02-24 03:56:02,171 INFO L138 SettingsManager]: * Use separate solver for trace checks=false
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-02-24 03:56:02,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-02-24 03:56:02,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-02-24 03:56:02,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-02-24 03:56:02,611 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-02-24 03:56:02,613 INFO L275 PluginConnector]: CDTParser initialized
[2021-02-24 03:56:02,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052d.c
[2021-02-24 03:56:02,689 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9169c26ea/5646b918a3024b45a81cb0630dc8f960/FLAG7a3b50773
[2021-02-24 03:56:03,273 INFO L306 CDTParser]: Found 1 translation units.
[2021-02-24 03:56:03,274 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1052d.c
[2021-02-24 03:56:03,284 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9169c26ea/5646b918a3024b45a81cb0630dc8f960/FLAG7a3b50773
[2021-02-24 03:56:03,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9169c26ea/5646b918a3024b45a81cb0630dc8f960
[2021-02-24 03:56:03,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-02-24 03:56:03,626 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-02-24 03:56:03,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-02-24 03:56:03,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-02-24 03:56:03,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-02-24 03:56:03,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:56:03" (1/1) ...
[2021-02-24 03:56:03,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a40dec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:03, skipping insertion in model container
[2021-02-24 03:56:03,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:56:03" (1/1) ...
[2021-02-24 03:56:03,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-02-24 03:56:03,664 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-02-24 03:56:03,848 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_1052d.c[1740,1753]
[2021-02-24 03:56:03,858 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-24 03:56:03,869 INFO L203 MainTranslator]: Completed pre-run
[2021-02-24 03:56:03,896 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_1052d.c[1740,1753]
[2021-02-24 03:56:03,897 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-24 03:56:03,914 INFO L208 MainTranslator]: Completed translation
[2021-02-24 03:56:03,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:03 WrapperNode
[2021-02-24 03:56:03,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-02-24 03:56:03,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-02-24 03:56:03,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-02-24 03:56:03,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-02-24 03:56:03,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:03" (1/1) ...
[2021-02-24 03:56:03,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:03" (1/1) ...
[2021-02-24 03:56:03,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:03" (1/1) ...
[2021-02-24 03:56:03,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:03" (1/1) ...
[2021-02-24 03:56:04,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:03" (1/1) ...
[2021-02-24 03:56:04,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:03" (1/1) ...
[2021-02-24 03:56:04,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:03" (1/1) ...
[2021-02-24 03:56:04,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-02-24 03:56:04,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-02-24 03:56:04,033 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-02-24 03:56:04,034 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-02-24 03:56:04,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:03" (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
[2021-02-24 03:56:04,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-02-24 03:56:04,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-02-24 03:56:04,123 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-02-24 03:56:04,123 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float
[2021-02-24 03:56:04,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float
[2021-02-24 03:56:04,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-02-24 03:56:04,123 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-02-24 03:56:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-02-24 03:56:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-02-24 03:56:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-02-24 03:56:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float
[2021-02-24 03:56:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2021-02-24 03:56:04,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-02-24 03:56:04,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-02-24 03:56:04,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-02-24 03:56:04,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2021-02-24 03:56:04,125 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float
[2021-02-24 03:56:04,125 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-02-24 03:56:04,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-02-24 03:56:04,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-02-24 03:56:04,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-02-24 03:56:04,511 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-02-24 03:56:04,511 INFO L299 CfgBuilder]: Removed 6 assume(true) statements.
[2021-02-24 03:56:04,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:56:04 BoogieIcfgContainer
[2021-02-24 03:56:04,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-02-24 03:56:04,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-02-24 03:56:04,515 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-02-24 03:56:04,519 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-02-24 03:56:04,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:56:03" (1/3) ...
[2021-02-24 03:56:04,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2603a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:56:04, skipping insertion in model container
[2021-02-24 03:56:04,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:03" (2/3) ...
[2021-02-24 03:56:04,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2603a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:56:04, skipping insertion in model container
[2021-02-24 03:56:04,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:56:04" (3/3) ...
[2021-02-24 03:56:04,522 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052d.c
[2021-02-24 03:56:04,529 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2021-02-24 03:56:04,538 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-02-24 03:56:04,558 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-02-24 03:56:04,597 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-02-24 03:56:04,597 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-02-24 03:56:04,597 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2021-02-24 03:56:04,597 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-02-24 03:56:04,597 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-02-24 03:56:04,597 INFO L381 AbstractCegarLoop]: Difference is false
[2021-02-24 03:56:04,598 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-02-24 03:56:04,598 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-02-24 03:56:04,623 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states.
[2021-02-24 03:56:04,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2021-02-24 03:56:04,634 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-24 03:56:04,635 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]
[2021-02-24 03:56:04,635 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-24 03:56:04,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-24 03:56:04,641 INFO L82 PathProgramCache]: Analyzing trace with hash -267954634, now seen corresponding path program 1 times
[2021-02-24 03:56:04,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-02-24 03:56:04,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900307293]
[2021-02-24 03:56:04,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-24 03:56:04,728 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-02-24 03:56:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-24 03:56:04,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 03:56:04,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 03:56:04,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 03:56:04,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 03:56:04,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-24 03:56:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-24 03:56:04,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 03:56:04,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 03:56:04,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2021-02-24 03:56:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-24 03:56:04,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 03:56:04,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 03:56:04,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 03:56:04,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 03:56:04,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-24 03:56:04,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900307293]
[2021-02-24 03:56:04,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-24 03:56:04,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-02-24 03:56:04,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227825824]
[2021-02-24 03:56:04,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-02-24 03:56:04,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-02-24 03:56:05,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-02-24 03:56:05,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-02-24 03:56:05,006 INFO L87 Difference]: Start difference. First operand 91 states. Second operand 4 states.
[2021-02-24 03:56:05,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-24 03:56:05,377 INFO L93 Difference]: Finished difference Result 161 states and 194 transitions.
[2021-02-24 03:56:05,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-02-24 03:56:05,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36
[2021-02-24 03:56:05,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-24 03:56:05,392 INFO L225 Difference]: With dead ends: 161
[2021-02-24 03:56:05,392 INFO L226 Difference]: Without dead ends: 83
[2021-02-24 03:56:05,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-02-24 03:56:05,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states.
[2021-02-24 03:56:05,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83.
[2021-02-24 03:56:05,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states.
[2021-02-24 03:56:05,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions.
[2021-02-24 03:56:05,488 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 36
[2021-02-24 03:56:05,490 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-24 03:56:05,490 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions.
[2021-02-24 03:56:05,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2021-02-24 03:56:05,491 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions.
[2021-02-24 03:56:05,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2021-02-24 03:56:05,494 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-24 03:56:05,495 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]
[2021-02-24 03:56:05,495 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-02-24 03:56:05,495 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-24 03:56:05,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-24 03:56:05,497 INFO L82 PathProgramCache]: Analyzing trace with hash 558445971, now seen corresponding path program 1 times
[2021-02-24 03:56:05,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-02-24 03:56:05,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937777118]
[2021-02-24 03:56:05,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-24 03:56:05,510 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-02-24 03:56:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-02-24 03:56:05,640 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-02-24 03:56:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-02-24 03:56:05,699 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-02-24 03:56:05,731 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2021-02-24 03:56:05,731 INFO L523 BasicCegarLoop]: Counterexample might be feasible
[2021-02-24 03:56:05,732 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-02-24 03:56:05,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:56:05 BoogieIcfgContainer
[2021-02-24 03:56:05,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-02-24 03:56:05,751 INFO L168 Benchmark]: Toolchain (without parser) took 2136.41 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 112.4 MB in the beginning and 130.5 MB in the end (delta: -18.1 MB). Peak memory consumption was 14.0 MB. Max. memory is 8.0 GB.
[2021-02-24 03:56:05,752 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 156.2 MB. Free memory is still 128.7 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-02-24 03:56:05,753 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.20 ms. Allocated memory is still 156.2 MB. Free memory was 111.3 MB in the beginning and 100.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB.
[2021-02-24 03:56:05,753 INFO L168 Benchmark]: Boogie Preprocessor took 117.22 ms. Allocated memory is still 156.2 MB. Free memory was 100.8 MB in the beginning and 139.4 MB in the end (delta: -38.6 MB). Peak memory consumption was 6.8 MB. Max. memory is 8.0 GB.
[2021-02-24 03:56:05,754 INFO L168 Benchmark]: RCFGBuilder took 480.15 ms. Allocated memory is still 156.2 MB. Free memory was 139.4 MB in the beginning and 115.8 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB.
[2021-02-24 03:56:05,755 INFO L168 Benchmark]: TraceAbstraction took 1233.86 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 115.3 MB in the beginning and 130.5 MB in the end (delta: -15.2 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB.
[2021-02-24 03:56:05,759 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.17 ms. Allocated memory is still 156.2 MB. Free memory is still 128.7 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 283.20 ms. Allocated memory is still 156.2 MB. Free memory was 111.3 MB in the beginning and 100.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 117.22 ms. Allocated memory is still 156.2 MB. Free memory was 100.8 MB in the beginning and 139.4 MB in the end (delta: -38.6 MB). Peak memory consumption was 6.8 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 480.15 ms. Allocated memory is still 156.2 MB. Free memory was 139.4 MB in the beginning and 115.8 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 1233.86 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 115.3 MB in the beginning and 130.5 MB in the end (delta: -15.2 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 82]: 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 81, overapproximation of bitwiseAnd at line 23, overapproximation of someBinaryArithmeticFLOAToperation at line 46.
Possible FailurePath:
[L13] static const float huge_floor = 1.0e30;
[L77] float x = 0.0f;
[L78] CALL, EXPR floor_float(x)
[L16] __int32_t i0, j0;
[L17] __uint32_t i, ix;
[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
[L25] COND FALSE !(j0 < 23)
[L45] COND TRUE !((ix) < 0x7f800000L)
[L46] return x + x;
[L78] RET, EXPR floor_float(x)
[L78] float res = floor_float(x);
[L81] EXPR res == 0.0f && __signbit_float(res) == 0
[L81] COND TRUE !(res == 0.0f && __signbit_float(res) == 0)
[L82] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 94 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 96 SDtfs, 17 SDslu, 70 SDs, 0 SdLazy, 106 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred 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: No data available, 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...