/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 17:56:13,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:56:13,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:56:13,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 17:56:13,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 17:56:13,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 17:56:13,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 17:56:13,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 17:56:13,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 17:56:13,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 17:56:13,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 17:56:13,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 17:56:13,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:56:13,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:56:13,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:56:13,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:56:13,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:56:13,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:56:13,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:56:13,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:56:13,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:56:13,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:56:13,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:56:13,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:56:13,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 17:56:13,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:56:13,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:56:13,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:56:13,537 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 17:56:13,566 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:56:13,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:56:13,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:56:13,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:56:13,569 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:56:13,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:56:13,569 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:56:13,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:56:13,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:56:13,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:56:13,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:56:13,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:56:13,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:56:13,571 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:56:13,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:56:13,571 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:56:13,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:56:13,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:56:13,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:56:13,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:56:13,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:56:13,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:56:13,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:56:13,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:56:13,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:56:13,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:56:13,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:56:13,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:56:13,574 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:56:13,574 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:56:13,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:56:13,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:56:13,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:56:13,995 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:56:13,996 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:56:13,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252b.c [2020-10-23 17:56:14,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7d27d0fc/796d241582f244a4a4c908b9d6dd4e73/FLAG320502c87 [2020-10-23 17:56:14,790 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:56:14,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1252b.c [2020-10-23 17:56:14,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7d27d0fc/796d241582f244a4a4c908b9d6dd4e73/FLAG320502c87 [2020-10-23 17:56:15,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7d27d0fc/796d241582f244a4a4c908b9d6dd4e73 [2020-10-23 17:56:15,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:56:15,142 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:56:15,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:56:15,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:56:15,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:56:15,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:56:15" (1/1) ... [2020-10-23 17:56:15,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@135cfad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:15, skipping insertion in model container [2020-10-23 17:56:15,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:56:15" (1/1) ... [2020-10-23 17:56:15,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:56:15,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:56:15,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:56:15,417 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:56:15,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:56:15,459 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:56:15,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:15 WrapperNode [2020-10-23 17:56:15,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:56:15,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:56:15,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:56:15,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:56:15,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:15" (1/1) ... [2020-10-23 17:56:15,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:15" (1/1) ... [2020-10-23 17:56:15,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:15" (1/1) ... [2020-10-23 17:56:15,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:15" (1/1) ... [2020-10-23 17:56:15,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:15" (1/1) ... [2020-10-23 17:56:15,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:15" (1/1) ... [2020-10-23 17:56:15,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:15" (1/1) ... [2020-10-23 17:56:15,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:56:15,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:56:15,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:56:15,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:56:15,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:15" (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 [2020-10-23 17:56:15,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:56:15,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:56:15,585 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:56:15,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-10-23 17:56:15,586 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2020-10-23 17:56:15,586 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-23 17:56:15,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:56:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:56:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:56:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:56:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:56:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-23 17:56:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-10-23 17:56:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 17:56:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:56:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:56:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2020-10-23 17:56:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-23 17:56:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:56:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:56:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:56:15,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:56:15,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 17:56:15,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:56:16,283 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:56:16,284 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-23 17:56:16,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:56:16 BoogieIcfgContainer [2020-10-23 17:56:16,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:56:16,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:56:16,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:56:16,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:56:16,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:56:15" (1/3) ... [2020-10-23 17:56:16,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e16ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:56:16, skipping insertion in model container [2020-10-23 17:56:16,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:15" (2/3) ... [2020-10-23 17:56:16,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e16ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:56:16, skipping insertion in model container [2020-10-23 17:56:16,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:56:16" (3/3) ... [2020-10-23 17:56:16,302 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2020-10-23 17:56:16,316 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:56:16,322 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:56:16,339 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:56:16,383 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:56:16,383 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:56:16,384 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:56:16,384 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:56:16,384 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:56:16,384 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:56:16,384 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:56:16,384 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:56:16,410 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-10-23 17:56:16,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-23 17:56:16,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:16,421 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] [2020-10-23 17:56:16,421 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:16,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:16,430 INFO L82 PathProgramCache]: Analyzing trace with hash -892085035, now seen corresponding path program 1 times [2020-10-23 17:56:16,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:16,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683370635] [2020-10-23 17:56:16,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:16,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:56:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:16,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 17:56:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:16,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 17:56:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:16,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:56:16,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683370635] [2020-10-23 17:56:16,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:56:16,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 17:56:16,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898425889] [2020-10-23 17:56:16,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 17:56:16,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:16,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 17:56:16,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 17:56:16,781 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 4 states. [2020-10-23 17:56:16,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:16,995 INFO L93 Difference]: Finished difference Result 84 states and 113 transitions. [2020-10-23 17:56:16,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 17:56:16,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-23 17:56:16,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:17,007 INFO L225 Difference]: With dead ends: 84 [2020-10-23 17:56:17,008 INFO L226 Difference]: Without dead ends: 41 [2020-10-23 17:56:17,011 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 [2020-10-23 17:56:17,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-23 17:56:17,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-23 17:56:17,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-23 17:56:17,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-10-23 17:56:17,064 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 23 [2020-10-23 17:56:17,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:17,064 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-10-23 17:56:17,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 17:56:17,065 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-10-23 17:56:17,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 17:56:17,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:17,067 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] [2020-10-23 17:56:17,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 17:56:17,068 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:17,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:17,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1307118978, now seen corresponding path program 1 times [2020-10-23 17:56:17,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:17,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584634965] [2020-10-23 17:56:17,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:17,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:56:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:17,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 17:56:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:17,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 17:56:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:17,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:56:17,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584634965] [2020-10-23 17:56:17,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:56:17,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 17:56:17,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407020804] [2020-10-23 17:56:17,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 17:56:17,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:17,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 17:56:17,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 17:56:17,297 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2020-10-23 17:56:17,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:17,499 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-10-23 17:56:17,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 17:56:17,500 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-23 17:56:17,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:17,504 INFO L225 Difference]: With dead ends: 61 [2020-10-23 17:56:17,504 INFO L226 Difference]: Without dead ends: 45 [2020-10-23 17:56:17,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 17:56:17,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-23 17:56:17,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-23 17:56:17,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-23 17:56:17,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-23 17:56:17,521 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 24 [2020-10-23 17:56:17,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:17,522 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-23 17:56:17,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 17:56:17,522 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-23 17:56:17,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-23 17:56:17,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:17,524 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] [2020-10-23 17:56:17,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 17:56:17,524 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:17,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:17,525 INFO L82 PathProgramCache]: Analyzing trace with hash -2070746802, now seen corresponding path program 1 times [2020-10-23 17:56:17,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:17,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965834754] [2020-10-23 17:56:17,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:17,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:56:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:17,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 17:56:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:17,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 17:56:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:17,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:56:17,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965834754] [2020-10-23 17:56:17,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:56:17,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 17:56:17,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225629337] [2020-10-23 17:56:17,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 17:56:17,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:17,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 17:56:17,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 17:56:17,774 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 6 states. [2020-10-23 17:56:17,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:17,981 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-10-23 17:56:17,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 17:56:17,982 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-10-23 17:56:17,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:17,984 INFO L225 Difference]: With dead ends: 65 [2020-10-23 17:56:17,984 INFO L226 Difference]: Without dead ends: 49 [2020-10-23 17:56:17,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 17:56:17,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-23 17:56:17,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-10-23 17:56:17,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-23 17:56:18,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-23 17:56:18,001 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 27 [2020-10-23 17:56:18,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:18,001 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-23 17:56:18,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 17:56:18,001 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-23 17:56:18,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-23 17:56:18,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:18,003 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] [2020-10-23 17:56:18,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 17:56:18,003 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:18,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:18,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1941664083, now seen corresponding path program 1 times [2020-10-23 17:56:18,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:18,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067503415] [2020-10-23 17:56:18,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:56:18,034 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:56:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:56:18,055 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:56:18,091 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 17:56:18,091 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 17:56:18,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 17:56:18,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:56:18 BoogieIcfgContainer [2020-10-23 17:56:18,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 17:56:18,133 INFO L168 Benchmark]: Toolchain (without parser) took 2994.97 ms. Allocated memory was 166.7 MB in the beginning and 206.6 MB in the end (delta: 39.8 MB). Free memory was 141.6 MB in the beginning and 149.2 MB in the end (delta: -7.6 MB). Peak memory consumption was 33.0 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:18,134 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 166.7 MB. Free memory is still 138.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:56:18,135 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.48 ms. Allocated memory is still 166.7 MB. Free memory was 141.1 MB in the beginning and 130.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:18,136 INFO L168 Benchmark]: Boogie Preprocessor took 53.00 ms. Allocated memory is still 166.7 MB. Free memory was 130.9 MB in the beginning and 129.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:18,136 INFO L168 Benchmark]: RCFGBuilder took 772.30 ms. Allocated memory is still 166.7 MB. Free memory was 129.1 MB in the beginning and 145.4 MB in the end (delta: -16.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:18,138 INFO L168 Benchmark]: TraceAbstraction took 1838.79 ms. Allocated memory was 166.7 MB in the beginning and 206.6 MB in the end (delta: 39.8 MB). Free memory was 145.4 MB in the beginning and 149.2 MB in the end (delta: -3.7 MB). Peak memory consumption was 36.1 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:18,142 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 166.7 MB. Free memory is still 138.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 314.48 ms. Allocated memory is still 166.7 MB. Free memory was 141.1 MB in the beginning and 130.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 53.00 ms. Allocated memory is still 166.7 MB. Free memory was 130.9 MB in the beginning and 129.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 772.30 ms. Allocated memory is still 166.7 MB. Free memory was 129.1 MB in the beginning and 145.4 MB in the end (delta: -16.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1838.79 ms. Allocated memory was 166.7 MB in the beginning and 206.6 MB in the end (delta: 39.8 MB). Free memory was 145.4 MB in the beginning and 149.2 MB in the end (delta: -3.7 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: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 80, overapproximation of someUnaryFLOAToperation at line 76. Possible FailurePath: [L75] float x = 0.0f; [L76] float y = -0.0f; VAL [x=0] [L77] CALL, EXPR fmax_float(x, y) VAL [\old(x)=0, \old(y)=2139095042] [L46] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L23] __uint32_t w; VAL [\old(x)=0, x=0] [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=0, w=2139095041, x=0] [L33-L34] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=0, w=2139095041, x=0] [L36-L37] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=0, w=2139095041, x=0] [L39] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L42] return 0; VAL [\old(x)=0, \result=0, w=2139095041, x=0] [L46] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=2139095042, __fpclassify_float(x)=0, x=0, y=2139095042] [L46] COND TRUE __fpclassify_float(x) == 0 [L47] return y; VAL [\old(x)=0, \old(y)=2139095042, \result=2139095042, x=0, y=2139095042] [L77] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=2139095042, x=0, y=2139095042] [L77] float res = fmax_float(x, y); [L80] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=2139095042, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=2139095042] [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L81] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1252b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 138 SDtfs, 30 SDslu, 251 SDs, 0 SdLazy, 181 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 5915 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...