/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_1252b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 04:47:23,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 04:47:23,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 04:47:23,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 04:47:23,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 04:47:23,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 04:47:23,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 04:47:23,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 04:47:23,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 04:47:23,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 04:47:23,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 04:47:23,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 04:47:23,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 04:47:23,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 04:47:23,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 04:47:23,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 04:47:23,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 04:47:23,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 04:47:23,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 04:47:23,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 04:47:23,984 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 04:47:24,013 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 04:47:24,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 04:47:24,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 04:47:24,019 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 04:47:24,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 04:47:24,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 04:47:24,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 04:47:24,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 04:47:24,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 04:47:24,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 04:47:24,020 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 04:47:24,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 04:47:24,021 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 04:47:24,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 04:47:24,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 04:47:24,021 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 04:47:24,022 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 04:47:24,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 04:47:24,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 04:47:24,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 04:47:24,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 04:47:24,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 04:47:24,025 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 04:47:24,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 04:47:24,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 04:47:24,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 04:47:24,506 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 04:47:24,507 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 04:47:24,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252b.c [2020-11-07 04:47:24,596 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a7290502/4aead1192a554938a375387192f8dfc7/FLAG4cd889610 [2020-11-07 04:47:25,249 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 04:47:25,250 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1252b.c [2020-11-07 04:47:25,258 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a7290502/4aead1192a554938a375387192f8dfc7/FLAG4cd889610 [2020-11-07 04:47:25,585 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a7290502/4aead1192a554938a375387192f8dfc7 [2020-11-07 04:47:25,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 04:47:25,596 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 04:47:25,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 04:47:25,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 04:47:25,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 04:47:25,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:47:25" (1/1) ... [2020-11-07 04:47:25,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38959bfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:25, skipping insertion in model container [2020-11-07 04:47:25,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:47:25" (1/1) ... [2020-11-07 04:47:25,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 04:47:25,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 04:47:25,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 04:47:25,818 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 04:47:25,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 04:47:25,877 INFO L208 MainTranslator]: Completed translation [2020-11-07 04:47:25,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:25 WrapperNode [2020-11-07 04:47:25,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 04:47:25,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 04:47:25,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 04:47:25,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 04:47:25,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:25" (1/1) ... [2020-11-07 04:47:25,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:25" (1/1) ... [2020-11-07 04:47:25,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:25" (1/1) ... [2020-11-07 04:47:25,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:25" (1/1) ... [2020-11-07 04:47:26,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:25" (1/1) ... [2020-11-07 04:47:26,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:25" (1/1) ... [2020-11-07 04:47:26,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:25" (1/1) ... [2020-11-07 04:47:26,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 04:47:26,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 04:47:26,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 04:47:26,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 04:47:26,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:25" (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 [2020-11-07 04:47:26,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 04:47:26,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 04:47:26,137 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 04:47:26,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-11-07 04:47:26,137 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2020-11-07 04:47:26,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-11-07 04:47:26,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 04:47:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 04:47:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 04:47:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 04:47:26,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 04:47:26,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-11-07 04:47:26,140 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-11-07 04:47:26,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-07 04:47:26,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 04:47:26,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 04:47:26,142 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2020-11-07 04:47:26,142 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-11-07 04:47:26,143 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 04:47:26,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 04:47:26,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 04:47:26,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 04:47:26,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 04:47:26,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-07 04:47:26,828 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 04:47:26,828 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-07 04:47:26,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:47:26 BoogieIcfgContainer [2020-11-07 04:47:26,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 04:47:26,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 04:47:26,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 04:47:26,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 04:47:26,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:47:25" (1/3) ... [2020-11-07 04:47:26,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315fc2a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:47:26, skipping insertion in model container [2020-11-07 04:47:26,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:25" (2/3) ... [2020-11-07 04:47:26,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315fc2a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:47:26, skipping insertion in model container [2020-11-07 04:47:26,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:47:26" (3/3) ... [2020-11-07 04:47:26,839 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2020-11-07 04:47:26,855 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 04:47:26,859 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 04:47:26,872 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 04:47:26,897 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 04:47:26,898 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 04:47:26,898 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 04:47:26,898 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 04:47:26,898 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 04:47:26,898 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 04:47:26,898 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 04:47:26,898 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 04:47:26,914 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states. [2020-11-07 04:47:26,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-07 04:47:26,926 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:47:26,927 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] [2020-11-07 04:47:26,927 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:47:26,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:47:26,934 INFO L82 PathProgramCache]: Analyzing trace with hash 580661350, now seen corresponding path program 1 times [2020-11-07 04:47:26,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:47:26,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482947416] [2020-11-07 04:47:26,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:47:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:27,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:47:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:27,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 04:47:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:27,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 04:47:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:27,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 04:47:27,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482947416] [2020-11-07 04:47:27,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 04:47:27,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 04:47:27,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142741796] [2020-11-07 04:47:27,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 04:47:27,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:47:27,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 04:47:27,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 04:47:27,268 INFO L87 Difference]: Start difference. First operand 97 states. Second operand 4 states. [2020-11-07 04:47:27,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:47:27,619 INFO L93 Difference]: Finished difference Result 173 states and 202 transitions. [2020-11-07 04:47:27,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 04:47:27,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-11-07 04:47:27,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:47:27,632 INFO L225 Difference]: With dead ends: 173 [2020-11-07 04:47:27,633 INFO L226 Difference]: Without dead ends: 87 [2020-11-07 04:47:27,637 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 [2020-11-07 04:47:27,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-07 04:47:27,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-11-07 04:47:27,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-07 04:47:27,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2020-11-07 04:47:27,698 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 40 [2020-11-07 04:47:27,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:47:27,698 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2020-11-07 04:47:27,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 04:47:27,699 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2020-11-07 04:47:27,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-07 04:47:27,702 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:47:27,702 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] [2020-11-07 04:47:27,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 04:47:27,703 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:47:27,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:47:27,704 INFO L82 PathProgramCache]: Analyzing trace with hash 997701105, now seen corresponding path program 1 times [2020-11-07 04:47:27,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:47:27,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891317730] [2020-11-07 04:47:27,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:47:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:27,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:47:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:27,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 04:47:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:27,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 04:47:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:27,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 04:47:27,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891317730] [2020-11-07 04:47:27,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 04:47:27,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 04:47:27,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086529314] [2020-11-07 04:47:27,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 04:47:27,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:47:27,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 04:47:27,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 04:47:27,935 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand 6 states. [2020-11-07 04:47:28,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:47:28,299 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-11-07 04:47:28,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 04:47:28,302 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-11-07 04:47:28,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:47:28,308 INFO L225 Difference]: With dead ends: 124 [2020-11-07 04:47:28,309 INFO L226 Difference]: Without dead ends: 92 [2020-11-07 04:47:28,312 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 [2020-11-07 04:47:28,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-07 04:47:28,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-11-07 04:47:28,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-07 04:47:28,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-11-07 04:47:28,345 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 49 [2020-11-07 04:47:28,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:47:28,345 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-11-07 04:47:28,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 04:47:28,346 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-11-07 04:47:28,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-07 04:47:28,348 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:47:28,348 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] [2020-11-07 04:47:28,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 04:47:28,349 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:47:28,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:47:28,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1233779619, now seen corresponding path program 1 times [2020-11-07 04:47:28,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:47:28,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425380338] [2020-11-07 04:47:28,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:47:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:28,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:47:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:28,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 04:47:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:28,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 04:47:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:28,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 04:47:28,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425380338] [2020-11-07 04:47:28,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 04:47:28,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 04:47:28,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474733973] [2020-11-07 04:47:28,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 04:47:28,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:47:28,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 04:47:28,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 04:47:28,543 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2020-11-07 04:47:28,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:47:28,846 INFO L93 Difference]: Finished difference Result 128 states and 139 transitions. [2020-11-07 04:47:28,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 04:47:28,847 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-11-07 04:47:28,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:47:28,852 INFO L225 Difference]: With dead ends: 128 [2020-11-07 04:47:28,853 INFO L226 Difference]: Without dead ends: 96 [2020-11-07 04:47:28,854 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 [2020-11-07 04:47:28,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-11-07 04:47:28,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-11-07 04:47:28,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-07 04:47:28,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-11-07 04:47:28,883 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 52 [2020-11-07 04:47:28,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:47:28,887 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-11-07 04:47:28,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 04:47:28,887 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-11-07 04:47:28,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-07 04:47:28,891 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:47:28,891 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] [2020-11-07 04:47:28,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 04:47:28,892 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:47:28,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:47:28,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1845658467, now seen corresponding path program 1 times [2020-11-07 04:47:28,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:47:28,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113226555] [2020-11-07 04:47:28,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:47:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 04:47:28,946 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 04:47:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 04:47:28,993 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 04:47:29,046 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 04:47:29,046 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 04:47:29,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 04:47:29,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:47:29 BoogieIcfgContainer [2020-11-07 04:47:29,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 04:47:29,135 INFO L168 Benchmark]: Toolchain (without parser) took 3541.33 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 117.4 MB in the beginning and 94.5 MB in the end (delta: 22.9 MB). Peak memory consumption was 56.3 MB. Max. memory is 8.0 GB. [2020-11-07 04:47:29,136 INFO L168 Benchmark]: CDTParser took 0.79 ms. Allocated memory is still 159.4 MB. Free memory is still 134.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 04:47:29,137 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.82 ms. Allocated memory is still 159.4 MB. Free memory was 116.7 MB in the beginning and 106.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 04:47:29,140 INFO L168 Benchmark]: Boogie Preprocessor took 147.12 ms. Allocated memory is still 159.4 MB. Free memory was 106.6 MB in the beginning and 143.0 MB in the end (delta: -36.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-11-07 04:47:29,142 INFO L168 Benchmark]: RCFGBuilder took 801.00 ms. Allocated memory is still 159.4 MB. Free memory was 143.0 MB in the beginning and 119.6 MB in the end (delta: 23.4 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-11-07 04:47:29,145 INFO L168 Benchmark]: TraceAbstraction took 2298.38 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 119.2 MB in the beginning and 94.5 MB in the end (delta: 24.8 MB). Peak memory consumption was 58.4 MB. Max. memory is 8.0 GB. [2020-11-07 04:47:29,151 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79 ms. Allocated memory is still 159.4 MB. Free memory is still 134.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 280.82 ms. Allocated memory is still 159.4 MB. Free memory was 116.7 MB in the beginning and 106.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 147.12 ms. Allocated memory is still 159.4 MB. Free memory was 106.6 MB in the beginning and 143.0 MB in the end (delta: -36.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 801.00 ms. Allocated memory is still 159.4 MB. Free memory was 143.0 MB in the beginning and 119.6 MB in the end (delta: 23.4 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2298.38 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 119.2 MB in the beginning and 94.5 MB in the end (delta: 24.8 MB). Peak memory consumption was 58.4 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; VAL [x=0] [L76] float y = -0.0f; VAL [x=0] [L77] CALL, EXPR fmax_float(x, y) VAL [\old(x)=0, \old(y)=2139095050] [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; VAL [\old(x)=0, gf_u={3:0}, x=0] [L27] gf_u.value = (x) VAL [\old(x)=0, gf_u={3:0}, x=0] [L28] EXPR gf_u.word VAL [\old(x)=0, gf_u={3:0}, gf_u.word=2139095041, x=0] [L28] (w) = gf_u.word VAL [(w) = gf_u.word=2139095046, \old(x)=0, gf_u={3:0}, gf_u.word=2139095041, w=2139095041, x=0] [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) VAL [\old(x)=0, w=2139095041, x=0] [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)=2139095050, __fpclassify_float(x)=0, x=0, y=2139095050] [L46] COND TRUE __fpclassify_float(x) == 0 VAL [\old(x)=0, \old(y)=2139095050, __fpclassify_float(x)=0, x=0, y=2139095050] [L47] return y; VAL [\old(x)=0, \old(y)=2139095050, \result=2139095050, x=0, y=2139095050] [L77] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=2139095050, x=0, y=2139095050] [L77] float res = fmax_float(x, y); VAL [fmax_float(x, y)=2139095050, res=2139095050, x=0, y=2139095050] [L80] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=2139095050, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=2139095050] [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) VAL [res=2139095050, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=2139095050] [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, 97 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 285 SDtfs, 59 SDslu, 511 SDs, 0 SdLazy, 383 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s 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=97occurred 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: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 193 NumberOfCodeBlocks, 193 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 14670 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...