/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/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:38:07,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:38:07,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:38:07,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 17:38:07,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 17:38:07,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 17:38:07,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 17:38:07,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 17:38:07,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 17:38:07,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 17:38:07,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 17:38:07,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 17:38:07,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:38:07,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:38:07,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:38:07,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:38:07,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:38:07,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:38:07,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:38:07,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:38:07,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:38:07,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:38:07,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:38:07,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:38:07,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 17:38:07,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:38:07,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:38:07,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:38:07,300 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:38:07,327 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:38:07,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:38:07,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:38:07,332 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:38:07,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:38:07,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:38:07,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:38:07,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:38:07,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:38:07,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:38:07,334 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:38:07,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:38:07,335 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:38:07,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:38:07,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:38:07,335 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:38:07,336 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:38:07,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:38:07,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:38:07,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:38:07,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:38:07,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:38:07,337 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:38:07,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:38:07,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:38:07,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:38:07,757 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:38:07,758 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:38:07,759 INFO L432 ainManager$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 17:38:07,848 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c668b6160/cf03a275f5ad46c0a24cfc31f66541bc/FLAGe7563f44f [2021-02-23 17:38:08,459 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:38:08,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2021-02-23 17:38:08,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c668b6160/cf03a275f5ad46c0a24cfc31f66541bc/FLAGe7563f44f [2021-02-23 17:38:08,823 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c668b6160/cf03a275f5ad46c0a24cfc31f66541bc [2021-02-23 17:38:08,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:38:08,840 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:38:08,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:38:08,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:38:08,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:38:08,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:38:08" (1/1) ... [2021-02-23 17:38:08,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25a41017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:08, skipping insertion in model container [2021-02-23 17:38:08,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:38:08" (1/1) ... [2021-02-23 17:38:08,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:38:08,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:38:09,092 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 17:38:09,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:38:09,112 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:38:09,171 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 17:38:09,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:38:09,216 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:38:09,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:09 WrapperNode [2021-02-23 17:38:09,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:38:09,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:38:09,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:38:09,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:38:09,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:09" (1/1) ... [2021-02-23 17:38:09,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:09" (1/1) ... [2021-02-23 17:38:09,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:09" (1/1) ... [2021-02-23 17:38:09,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:09" (1/1) ... [2021-02-23 17:38:09,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:09" (1/1) ... [2021-02-23 17:38:09,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:09" (1/1) ... [2021-02-23 17:38:09,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:09" (1/1) ... [2021-02-23 17:38:09,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:38:09,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:38:09,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:38:09,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:38:09,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:09" (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 17:38:09,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:38:09,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:38:09,506 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:38:09,506 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2021-02-23 17:38:09,506 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2021-02-23 17:38:09,506 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:38:09,507 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:38:09,507 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:38:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:38:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:38:09,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2021-02-23 17:38:09,510 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2021-02-23 17:38:09,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 17:38:09,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:38:09,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:38:09,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 17:38:09,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:38:09,512 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2021-02-23 17:38:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:38:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:38:09,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:38:09,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-02-23 17:38:09,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:38:10,319 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:38:10,319 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-02-23 17:38:10,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:38:10 BoogieIcfgContainer [2021-02-23 17:38:10,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:38:10,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:38:10,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:38:10,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:38:10,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:38:08" (1/3) ... [2021-02-23 17:38:10,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2710077a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:38:10, skipping insertion in model container [2021-02-23 17:38:10,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:38:09" (2/3) ... [2021-02-23 17:38:10,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2710077a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:38:10, skipping insertion in model container [2021-02-23 17:38:10,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:38:10" (3/3) ... [2021-02-23 17:38:10,332 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2021-02-23 17:38:10,340 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:38:10,345 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:38:10,372 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:38:10,399 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:38:10,400 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:38:10,400 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:38:10,400 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:38:10,400 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:38:10,400 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:38:10,401 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:38:10,401 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:38:10,421 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2021-02-23 17:38:10,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-02-23 17:38:10,434 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:38:10,435 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] [2021-02-23 17:38:10,436 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:38:10,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:38:10,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1375230170, now seen corresponding path program 1 times [2021-02-23 17:38:10,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:38:10,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584529139] [2021-02-23 17:38:10,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:38:10,544 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:38:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:10,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:10,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:10,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:10,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:10,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:38:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:10,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:10,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:10,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 17:38:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:10,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:10,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:10,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:10,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:10,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-23 17:38:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:38:10,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:10,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:10,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:38:10,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:38:10,932 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 17:38:10,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584529139] [2021-02-23 17:38:10,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:38:10,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:38:10,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130219653] [2021-02-23 17:38:10,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:38:10,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:38:10,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:38:10,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:38:10,978 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 4 states. [2021-02-23 17:38:11,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:38:11,606 INFO L93 Difference]: Finished difference Result 291 states and 354 transitions. [2021-02-23 17:38:11,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:38:11,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2021-02-23 17:38:11,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:38:11,621 INFO L225 Difference]: With dead ends: 291 [2021-02-23 17:38:11,621 INFO L226 Difference]: Without dead ends: 150 [2021-02-23 17:38:11,627 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 17:38:11,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-02-23 17:38:11,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-02-23 17:38:11,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2021-02-23 17:38:11,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 165 transitions. [2021-02-23 17:38:11,698 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 165 transitions. Word has length 54 [2021-02-23 17:38:11,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:38:11,699 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 165 transitions. [2021-02-23 17:38:11,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:38:11,699 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 165 transitions. [2021-02-23 17:38:11,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-02-23 17:38:11,702 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:38:11,703 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:38:11,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:38:11,704 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:38:11,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:38:11,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1426054672, now seen corresponding path program 1 times [2021-02-23 17:38:11,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:38:11,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441378145] [2021-02-23 17:38:11,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:38:11,709 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:38:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:38:11,855 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:38:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:38:11,950 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:38:11,996 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 17:38:11,996 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 17:38:11,997 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:38:12,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:38:12 BoogieIcfgContainer [2021-02-23 17:38:12,019 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:38:12,021 INFO L168 Benchmark]: Toolchain (without parser) took 3192.66 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 126.6 MB in the beginning and 126.3 MB in the end (delta: 289.8 kB). Peak memory consumption was 33.9 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:12,022 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:38:12,023 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.93 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 113.7 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:12,024 INFO L168 Benchmark]: Boogie Preprocessor took 129.13 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 111.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:12,025 INFO L168 Benchmark]: RCFGBuilder took 968.53 ms. Allocated memory is still 151.0 MB. Free memory was 111.5 MB in the beginning and 113.4 MB in the end (delta: -1.9 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:12,026 INFO L168 Benchmark]: TraceAbstraction took 1695.27 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 112.9 MB in the beginning and 126.3 MB in the end (delta: -13.4 MB). Peak memory consumption was 21.2 MB. Max. memory is 8.0 GB. [2021-02-23 17:38:12,029 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 377.93 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 113.7 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 129.13 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 111.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 968.53 ms. Allocated memory is still 151.0 MB. Free memory was 111.5 MB in the beginning and 113.4 MB in the end (delta: -1.9 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1695.27 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 112.9 MB in the beginning and 126.3 MB in the end (delta: -13.4 MB). Peak memory consumption was 21.2 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 34, 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, }; [L128] float x = __VERIFIER_nondet_float(); [L129] float y = -1.0f / 0.0f; [L131] CALL isfinite_float(x) [L111] __int32_t ix; [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)); [L131] RET isfinite_float(x) [L131] COND TRUE isfinite_float(x) [L133] CALL, EXPR fmod_float(x, y) [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; [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 [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); [L133] RET, EXPR fmod_float(x, y) [L133] float res = fmod_float(x, y); [L136] COND TRUE res != x [L137] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 160 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 169 SDtfs, 31 SDslu, 123 SDs, 0 SdLazy, 185 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s 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=157occurred 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...