/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 22:36:14,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 22:36:14,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 22:36:14,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 22:36:14,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 22:36:14,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 22:36:14,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 22:36:14,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 22:36:14,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 22:36:14,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 22:36:14,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 22:36:14,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 22:36:14,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 22:36:14,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 22:36:14,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 22:36:14,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 22:36:14,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 22:36:14,371 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 22:36:14,396 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 22:36:14,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 22:36:14,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 22:36:14,399 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 22:36:14,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 22:36:14,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 22:36:14,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 22:36:14,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 22:36:14,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 22:36:14,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 22:36:14,402 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 22:36:14,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 22:36:14,402 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 22:36:14,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 22:36:14,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 22:36:14,403 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 22:36:14,403 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 22:36:14,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 22:36:14,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:36:14,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 22:36:14,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 22:36:14,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 22:36:14,404 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 22:36:14,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 22:36:14,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 22:36:14,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 22:36:14,787 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 22:36:14,790 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 22:36:14,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2021-02-23 22:36:14,874 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa5769a5b/96db5d98eb5e434292fd23074c0b3c90/FLAG54b192843 [2021-02-23 22:36:15,509 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 22:36:15,510 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2021-02-23 22:36:15,523 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa5769a5b/96db5d98eb5e434292fd23074c0b3c90/FLAG54b192843 [2021-02-23 22:36:15,888 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa5769a5b/96db5d98eb5e434292fd23074c0b3c90 [2021-02-23 22:36:15,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 22:36:15,905 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 22:36:15,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 22:36:15,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 22:36:15,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 22:36:15,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:36:15" (1/1) ... [2021-02-23 22:36:15,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@704b4469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:15, skipping insertion in model container [2021-02-23 22:36:15,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:36:15" (1/1) ... [2021-02-23 22:36:15,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 22:36:15,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 22:36:16,142 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_1130a.c[2907,2920] [2021-02-23 22:36:16,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:36:16,161 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 22:36:16,241 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_1130a.c[2907,2920] [2021-02-23 22:36:16,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:36:16,276 INFO L208 MainTranslator]: Completed translation [2021-02-23 22:36:16,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:16 WrapperNode [2021-02-23 22:36:16,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 22:36:16,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 22:36:16,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 22:36:16,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 22:36:16,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:16" (1/1) ... [2021-02-23 22:36:16,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:16" (1/1) ... [2021-02-23 22:36:16,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:16" (1/1) ... [2021-02-23 22:36:16,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:16" (1/1) ... [2021-02-23 22:36:16,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:16" (1/1) ... [2021-02-23 22:36:16,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:16" (1/1) ... [2021-02-23 22:36:16,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:16" (1/1) ... [2021-02-23 22:36:16,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 22:36:16,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 22:36:16,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 22:36:16,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 22:36:16,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:16" (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 22:36:16,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 22:36:16,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 22:36:16,435 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 22:36:16,435 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2021-02-23 22:36:16,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2021-02-23 22:36:16,436 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 22:36:16,436 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 22:36:16,436 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 22:36:16,436 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 22:36:16,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 22:36:16,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2021-02-23 22:36:16,437 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2021-02-23 22:36:16,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 22:36:16,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 22:36:16,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 22:36:16,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 22:36:16,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 22:36:16,438 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2021-02-23 22:36:16,438 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 22:36:16,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 22:36:16,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 22:36:16,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-02-23 22:36:16,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 22:36:17,060 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 22:36:17,060 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-02-23 22:36:17,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:36:17 BoogieIcfgContainer [2021-02-23 22:36:17,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 22:36:17,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 22:36:17,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 22:36:17,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 22:36:17,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:36:15" (1/3) ... [2021-02-23 22:36:17,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb73460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:36:17, skipping insertion in model container [2021-02-23 22:36:17,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:36:16" (2/3) ... [2021-02-23 22:36:17,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb73460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:36:17, skipping insertion in model container [2021-02-23 22:36:17,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:36:17" (3/3) ... [2021-02-23 22:36:17,071 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2021-02-23 22:36:17,078 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 22:36:17,091 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 22:36:17,113 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 22:36:17,151 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 22:36:17,152 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 22:36:17,152 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 22:36:17,152 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 22:36:17,152 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 22:36:17,152 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 22:36:17,152 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 22:36:17,153 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 22:36:17,172 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2021-02-23 22:36:17,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-23 22:36:17,185 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:36:17,185 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] [2021-02-23 22:36:17,186 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:36:17,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:36:17,192 INFO L82 PathProgramCache]: Analyzing trace with hash -2051775702, now seen corresponding path program 1 times [2021-02-23 22:36:17,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:36:17,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626209003] [2021-02-23 22:36:17,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:36:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:17,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:17,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:17,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:17,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:17,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:36:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:17,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:17,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:17,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-23 22:36:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:36:17,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:17,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:17,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:36:17,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:36:17,548 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 22:36:17,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626209003] [2021-02-23 22:36:17,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:36:17,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 22:36:17,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889051526] [2021-02-23 22:36:17,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 22:36:17,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:36:17,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 22:36:17,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 22:36:17,574 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 4 states. [2021-02-23 22:36:18,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:36:18,105 INFO L93 Difference]: Finished difference Result 293 states and 357 transitions. [2021-02-23 22:36:18,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 22:36:18,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2021-02-23 22:36:18,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:36:18,118 INFO L225 Difference]: With dead ends: 293 [2021-02-23 22:36:18,118 INFO L226 Difference]: Without dead ends: 153 [2021-02-23 22:36:18,122 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 [2021-02-23 22:36:18,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-02-23 22:36:18,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-02-23 22:36:18,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2021-02-23 22:36:18,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 169 transitions. [2021-02-23 22:36:18,184 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 169 transitions. Word has length 48 [2021-02-23 22:36:18,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:36:18,185 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 169 transitions. [2021-02-23 22:36:18,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 22:36:18,185 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 169 transitions. [2021-02-23 22:36:18,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-23 22:36:18,188 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:36:18,189 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] [2021-02-23 22:36:18,190 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 22:36:18,190 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:36:18,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:36:18,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1247016723, now seen corresponding path program 1 times [2021-02-23 22:36:18,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:36:18,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688909780] [2021-02-23 22:36:18,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:36:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:36:18,285 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:36:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:36:18,390 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:36:18,428 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 22:36:18,429 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 22:36:18,430 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 22:36:18,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:36:18 BoogieIcfgContainer [2021-02-23 22:36:18,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 22:36:18,487 INFO L168 Benchmark]: Toolchain (without parser) took 2592.83 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.8 MB in the beginning and 108.7 MB in the end (delta: 18.1 MB). Peak memory consumption was 49.9 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:18,488 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:36:18,489 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.04 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 113.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:18,490 INFO L168 Benchmark]: Boogie Preprocessor took 56.07 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 111.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:18,491 INFO L168 Benchmark]: RCFGBuilder took 727.93 ms. Allocated memory is still 151.0 MB. Free memory was 111.6 MB in the beginning and 113.9 MB in the end (delta: -2.2 MB). Peak memory consumption was 19.1 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:18,492 INFO L168 Benchmark]: TraceAbstraction took 1421.41 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 113.3 MB in the beginning and 108.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 36.1 MB. Max. memory is 8.0 GB. [2021-02-23 22:36:18,496 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 151.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 367.04 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 113.9 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.07 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 111.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 727.93 ms. Allocated memory is still 151.0 MB. Free memory was 111.6 MB in the beginning and 113.9 MB in the end (delta: -2.2 MB). Peak memory consumption was 19.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1421.41 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 113.3 MB in the beginning and 108.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 36.1 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 bitwiseXor at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=4294967308, \old(Zero_fmod)=4294967306, \old(Zero_fmod)=4294967300, one_fmod=1, Zero_fmod={9:0}] [L128] float x = 0.0f; VAL [one_fmod=1, x=0, Zero_fmod={9:0}] [L129] float y = __VERIFIER_nondet_float(); VAL [__VERIFIER_nondet_float()=4294967298, one_fmod=1, x=0, y=4294967298, Zero_fmod={9:0}] [L131] COND TRUE (y < 0.0f || y > 0.0f) VAL [one_fmod=1, x=0, y=4294967298, Zero_fmod={9:0}] [L133] CALL, EXPR fmod_float(x, y) VAL [\old(x)=0, \old(y)=4294967298, one_fmod=1, Zero_fmod={9:0}] [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=0, \old(y)=4294967298, one_fmod=1, x=0, y=4294967298, Zero_fmod={9:0}] [L23] ieee_float_shape_type gf_u; VAL [\old(x)=0, \old(y)=4294967298, gf_u={10:0}, one_fmod=1, x=0, y=4294967298, Zero_fmod={9:0}] [L24] gf_u.value = (x) VAL [\old(x)=0, \old(y)=4294967298, gf_u={10:0}, one_fmod=1, x=0, y=4294967298, Zero_fmod={9:0}] [L25] EXPR gf_u.word VAL [\old(x)=0, \old(y)=4294967298, gf_u={10:0}, gf_u.word=0, one_fmod=1, x=0, y=4294967298, Zero_fmod={9:0}] [L25] (hx) = gf_u.word VAL [\old(x)=0, \old(y)=4294967298, gf_u={10:0}, gf_u.word=0, hx=0, one_fmod=1, x=0, y=4294967298, Zero_fmod={9:0}] [L28] ieee_float_shape_type gf_u; VAL [\old(x)=0, \old(y)=4294967298, gf_u={3:0}, hx=0, one_fmod=1, x=0, y=4294967298, Zero_fmod={9:0}] [L29] gf_u.value = (y) VAL [\old(x)=0, \old(y)=4294967298, gf_u={3:0}, hx=0, one_fmod=1, x=0, y=4294967298, Zero_fmod={9:0}] [L30] EXPR gf_u.word VAL [\old(x)=0, \old(y)=4294967298, gf_u={3:0}, gf_u.word=4294967294, hx=0, one_fmod=1, x=0, y=4294967298, Zero_fmod={9:0}] [L30] (hy) = gf_u.word VAL [\old(x)=0, \old(y)=4294967298, gf_u={3:0}, gf_u.word=4294967294, hx=0, hy=-2, one_fmod=1, x=0, y=4294967298, Zero_fmod={9:0}] [L32] sx = hx & 0x80000000 VAL [\old(x)=0, \old(y)=4294967298, hx=0, hy=-2, one_fmod=1, sx=-1, x=0, y=4294967298, Zero_fmod={9:0}] [L33] hx ^= sx VAL [\old(x)=0, \old(y)=4294967298, hy=-2, one_fmod=1, sx=-1, x=0, y=4294967298, Zero_fmod={9:0}] [L34] hy &= 0x7fffffff VAL [\old(x)=0, \old(y)=4294967298, one_fmod=1, sx=-1, x=0, y=4294967298, Zero_fmod={9:0}] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) VAL [\old(x)=0, \old(y)=4294967298, hx=2139095040, hy=2139095041, one_fmod=1, sx=-1, x=0, y=4294967298, Zero_fmod={9:0}] [L37] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=4294967298, hx=2139095040, hy=2139095041, one_fmod=1, sx=-1, x=0, y=4294967298, Zero_fmod={9:0}] [L133] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=4294967307, one_fmod=1, x=0, y=4294967298, Zero_fmod={9:0}] [L133] float res = fmod_float(x, y); VAL [fmod_float(x, y)=4294967307, one_fmod=1, res=4294967307, x=0, y=4294967298, Zero_fmod={9:0}] [L136] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [one_fmod=1, res=4294967307, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=4294967298, Zero_fmod={9:0}] [L136] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) VAL [one_fmod=1, res=4294967307, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=4294967298, Zero_fmod={9:0}] [L137] reach_error() VAL [one_fmod=1, res=4294967307, x=0, y=4294967298, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 164 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 174 SDtfs, 39 SDslu, 124 SDs, 0 SdLazy, 190 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=161occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 4606 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...