/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_1092d.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-b7b32d2
[2021-02-22 01:32:06,322 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-02-22 01:32:06,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-02-22 01:32:06,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-02-22 01:32:06,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-02-22 01:32:06,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-02-22 01:32:06,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2021-02-22 01:32:06,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-02-22 01:32:06,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-02-22 01:32:06,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-02-22 01:32:06,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-02-22 01:32:06,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-02-22 01:32:06,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-02-22 01:32:06,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-02-22 01:32:06,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-02-22 01:32:06,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-02-22 01:32:06,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
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[2021-02-22 01:32:06,477 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf
[2021-02-22 01:32:06,490 INFO L113 SettingsManager]: Loading preferences was successful
[2021-02-22 01:32:06,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-02-22 01:32:06,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-02-22 01:32:06,492 INFO L138 SettingsManager]: * sizeof long=4
[2021-02-22 01:32:06,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-02-22 01:32:06,492 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-02-22 01:32:06,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-02-22 01:32:06,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-02-22 01:32:06,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-02-22 01:32:06,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-02-22 01:32:06,493 INFO L138 SettingsManager]: * sizeof long double=12
[2021-02-22 01:32:06,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-02-22 01:32:06,494 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-02-22 01:32:06,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-02-22 01:32:06,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-02-22 01:32:06,494 INFO L138 SettingsManager]: * Size of a code block=SingleStatement
[2021-02-22 01:32:06,494 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-02-22 01:32:06,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-02-22 01:32:06,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-02-22 01:32:06,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-02-22 01:32:06,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2021-02-22 01:32:06,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-02-22 01:32:06,496 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX
[2021-02-22 01:32:06,496 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-02-22 01:32:06,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-02-22 01:32:06,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-02-22 01:32:06,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-02-22 01:32:06,893 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-02-22 01:32:06,894 INFO L275 PluginConnector]: CDTParser initialized
[2021-02-22 01:32:06,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1092d.c
[2021-02-22 01:32:06,983 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7449292c/64fce6980b524af198ed50343f216800/FLAG3117cc0e7
[2021-02-22 01:32:07,560 INFO L306 CDTParser]: Found 1 translation units.
[2021-02-22 01:32:07,560 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1092d.c
[2021-02-22 01:32:07,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7449292c/64fce6980b524af198ed50343f216800/FLAG3117cc0e7
[2021-02-22 01:32:07,913 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7449292c/64fce6980b524af198ed50343f216800
[2021-02-22 01:32:07,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-02-22 01:32:07,937 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-02-22 01:32:07,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-02-22 01:32:07,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-02-22 01:32:07,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-02-22 01:32:07,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:32:07" (1/1) ...
[2021-02-22 01:32:07,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc7347e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:07, skipping insertion in model container
[2021-02-22 01:32:07,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:32:07" (1/1) ...
[2021-02-22 01:32:07,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-02-22 01:32:07,978 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-02-22 01:32:08,162 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_1092d.c[1790,1803]
[2021-02-22 01:32:08,166 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-22 01:32:08,175 INFO L203 MainTranslator]: Completed pre-run
[2021-02-22 01:32:08,203 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_1092d.c[1790,1803]
[2021-02-22 01:32:08,204 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-22 01:32:08,226 INFO L208 MainTranslator]: Completed translation
[2021-02-22 01:32:08,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:08 WrapperNode
[2021-02-22 01:32:08,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-02-22 01:32:08,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-02-22 01:32:08,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-02-22 01:32:08,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-02-22 01:32:08,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:08" (1/1) ...
[2021-02-22 01:32:08,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:08" (1/1) ...
[2021-02-22 01:32:08,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:08" (1/1) ...
[2021-02-22 01:32:08,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:08" (1/1) ...
[2021-02-22 01:32:08,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:08" (1/1) ...
[2021-02-22 01:32:08,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:08" (1/1) ...
[2021-02-22 01:32:08,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:08" (1/1) ...
[2021-02-22 01:32:08,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-02-22 01:32:08,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-02-22 01:32:08,275 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-02-22 01:32:08,275 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-02-22 01:32:08,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:08" (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
[2021-02-22 01:32:08,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-02-22 01:32:08,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-02-22 01:32:08,392 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-02-22 01:32:08,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float
[2021-02-22 01:32:08,393 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float
[2021-02-22 01:32:08,393 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-02-22 01:32:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-02-22 01:32:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-02-22 01:32:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-02-22 01:32:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-02-22 01:32:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float
[2021-02-22 01:32:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2021-02-22 01:32:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-02-22 01:32:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-02-22 01:32:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-02-22 01:32:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2021-02-22 01:32:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float
[2021-02-22 01:32:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-02-22 01:32:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-02-22 01:32:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-02-22 01:32:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-02-22 01:32:08,976 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-02-22 01:32:08,977 INFO L299 CfgBuilder]: Removed 6 assume(true) statements.
[2021-02-22 01:32:08,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:32:08 BoogieIcfgContainer
[2021-02-22 01:32:08,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-02-22 01:32:08,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-02-22 01:32:08,982 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-02-22 01:32:08,986 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-02-22 01:32:08,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:32:07" (1/3) ...
[2021-02-22 01:32:08,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d91059c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:32:08, skipping insertion in model container
[2021-02-22 01:32:08,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:08" (2/3) ...
[2021-02-22 01:32:08,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d91059c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:32:08, skipping insertion in model container
[2021-02-22 01:32:08,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:32:08" (3/3) ...
[2021-02-22 01:32:08,990 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092d.c
[2021-02-22 01:32:08,997 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2021-02-22 01:32:09,002 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-02-22 01:32:09,022 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-02-22 01:32:09,046 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-02-22 01:32:09,047 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-02-22 01:32:09,047 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2021-02-22 01:32:09,047 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-02-22 01:32:09,047 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-02-22 01:32:09,047 INFO L381 AbstractCegarLoop]: Difference is false
[2021-02-22 01:32:09,047 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-02-22 01:32:09,047 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-02-22 01:32:09,065 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states.
[2021-02-22 01:32:09,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2021-02-22 01:32:09,076 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-22 01:32:09,077 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]
[2021-02-22 01:32:09,078 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-22 01:32:09,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-22 01:32:09,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1860598410, now seen corresponding path program 1 times
[2021-02-22 01:32:09,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-02-22 01:32:09,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656138343]
[2021-02-22 01:32:09,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-22 01:32:09,176 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-02-22 01:32:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-22 01:32:09,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-22 01:32:09,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-22 01:32:09,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-22 01:32:09,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-22 01:32:09,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-22 01:32:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-22 01:32:09,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-22 01:32:09,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-22 01:32:09,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2021-02-22 01:32:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-22 01:32:09,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-22 01:32:09,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-22 01:32:09,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-22 01:32:09,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-22 01:32:09,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2021-02-22 01:32:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-22 01:32:09,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-22 01:32:09,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-22 01:32:09,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-22 01:32:09,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-22 01:32:09,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-22 01:32:09,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656138343]
[2021-02-22 01:32:09,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-22 01:32:09,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-02-22 01:32:09,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804797784]
[2021-02-22 01:32:09,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-02-22 01:32:09,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-02-22 01:32:09,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-02-22 01:32:09,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-02-22 01:32:09,529 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 4 states.
[2021-02-22 01:32:09,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-22 01:32:09,993 INFO L93 Difference]: Finished difference Result 153 states and 184 transitions.
[2021-02-22 01:32:09,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-02-22 01:32:09,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42
[2021-02-22 01:32:09,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-22 01:32:10,006 INFO L225 Difference]: With dead ends: 153
[2021-02-22 01:32:10,006 INFO L226 Difference]: Without dead ends: 80
[2021-02-22 01:32:10,010 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
[2021-02-22 01:32:10,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states.
[2021-02-22 01:32:10,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80.
[2021-02-22 01:32:10,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states.
[2021-02-22 01:32:10,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions.
[2021-02-22 01:32:10,070 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 42
[2021-02-22 01:32:10,071 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-22 01:32:10,071 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions.
[2021-02-22 01:32:10,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2021-02-22 01:32:10,071 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions.
[2021-02-22 01:32:10,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2021-02-22 01:32:10,074 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-22 01:32:10,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-22 01:32:10,074 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-02-22 01:32:10,075 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-22 01:32:10,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-22 01:32:10,076 INFO L82 PathProgramCache]: Analyzing trace with hash -301483240, now seen corresponding path program 1 times
[2021-02-22 01:32:10,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-02-22 01:32:10,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739757401]
[2021-02-22 01:32:10,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-22 01:32:10,080 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-02-22 01:32:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-02-22 01:32:10,173 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-02-22 01:32:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-02-22 01:32:10,259 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-02-22 01:32:10,323 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2021-02-22 01:32:10,324 INFO L523 BasicCegarLoop]: Counterexample might be feasible
[2021-02-22 01:32:10,325 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-02-22 01:32:10,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:32:10 BoogieIcfgContainer
[2021-02-22 01:32:10,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-02-22 01:32:10,358 INFO L168 Benchmark]: Toolchain (without parser) took 2431.17 ms. Allocated memory was 164.6 MB in the beginning and 211.8 MB in the end (delta: 47.2 MB). Free memory was 140.0 MB in the beginning and 168.6 MB in the end (delta: -28.6 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB.
[2021-02-22 01:32:10,359 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 164.6 MB. Free memory is still 136.9 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-02-22 01:32:10,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.37 ms. Allocated memory is still 164.6 MB. Free memory was 138.8 MB in the beginning and 128.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB.
[2021-02-22 01:32:10,364 INFO L168 Benchmark]: Boogie Preprocessor took 46.35 ms. Allocated memory is still 164.6 MB. Free memory was 128.3 MB in the beginning and 126.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2021-02-22 01:32:10,365 INFO L168 Benchmark]: RCFGBuilder took 704.08 ms. Allocated memory is still 164.6 MB. Free memory was 126.5 MB in the beginning and 137.8 MB in the end (delta: -11.3 MB). Peak memory consumption was 18.8 MB. Max. memory is 8.0 GB.
[2021-02-22 01:32:10,367 INFO L168 Benchmark]: TraceAbstraction took 1371.48 ms. Allocated memory was 164.6 MB in the beginning and 211.8 MB in the end (delta: 47.2 MB). Free memory was 137.3 MB in the beginning and 168.6 MB in the end (delta: -31.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB.
[2021-02-22 01:32:10,380 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 164.6 MB. Free memory is still 136.9 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 288.37 ms. Allocated memory is still 164.6 MB. Free memory was 138.8 MB in the beginning and 128.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 46.35 ms. Allocated memory is still 164.6 MB. Free memory was 128.3 MB in the beginning and 126.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 704.08 ms. Allocated memory is still 164.6 MB. Free memory was 126.5 MB in the beginning and 137.8 MB in the end (delta: -11.3 MB). Peak memory consumption was 18.8 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 1371.48 ms. Allocated memory was 164.6 MB in the beginning and 211.8 MB in the end (delta: 47.2 MB). Free memory was 137.3 MB in the beginning and 168.6 MB in the end (delta: -31.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 83]: Unable to prove that call to reach_error is unreachable
Unable to prove that call to reach_error is unreachable
Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 78, overapproximation of bitwiseAnd at line 66.
Possible FailurePath:
[L13] static const float huge_ceil = 1.0e30;
[L78] float x = -1.0f / 0.0f;
[L79] CALL, EXPR ceil_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 FALSE !(!((ix) < 0x7f800000L))
[L48] return x;
[L79] RET, EXPR ceil_float(x)
[L79] float res = ceil_float(x);
[L82] CALL, EXPR isinf_float(res)
[L60] __int32_t ix;
[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);
[L82] RET, EXPR isinf_float(res)
[L82] COND TRUE !isinf_float(res)
[L83] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 90 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: 91 SDtfs, 17 SDslu, 65 SDs, 0 SdLazy, 101 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=87occurred 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...