/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:25:07,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:25:07,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:25:07,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 00:25:07,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 00:25:07,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 00:25:07,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 00:25:07,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 00:25:07,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 00:25:07,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 00:25:07,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 00:25:07,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 00:25:07,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:25:07,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:25:07,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:25:08,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:25:08,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:25:08,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:25:08,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:25:08,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:25:08,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:25:08,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:25:08,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:25:08,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:25:08,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 00:25:08,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 00:25:08,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 00:25:08,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 00:25:08,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 00:25:08,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 00:25:08,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 00:25:08,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 00:25:08,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 00:25:08,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 00:25:08,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 00:25:08,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 00:25:08,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 00:25:08,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 00:25:08,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:25:08,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:25:08,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:25:08,064 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 00:25:08,088 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:25:08,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:25:08,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:25:08,093 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:25:08,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:25:08,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:25:08,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:25:08,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:25:08,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:25:08,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:25:08,095 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:25:08,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:25:08,096 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:25:08,096 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:25:08,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:25:08,097 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:25:08,097 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:25:08,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:25:08,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:25:08,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:25:08,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:25:08,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:25:08,098 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:25:08,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:25:08,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:25:08,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:25:08,552 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:25:08,553 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:25:08,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c [2020-11-07 00:25:08,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a556d801/e8a11d635308473caf54effcb24d1038/FLAG72ffc33bf [2020-11-07 00:25:09,233 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:25:09,234 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c [2020-11-07 00:25:09,244 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a556d801/e8a11d635308473caf54effcb24d1038/FLAG72ffc33bf [2020-11-07 00:25:09,585 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a556d801/e8a11d635308473caf54effcb24d1038 [2020-11-07 00:25:09,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:25:09,597 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:25:09,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:25:09,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:25:09,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:25:09,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:25:09" (1/1) ... [2020-11-07 00:25:09,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3caf4474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:09, skipping insertion in model container [2020-11-07 00:25:09,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:25:09" (1/1) ... [2020-11-07 00:25:09,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:25:09,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:25:09,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:25:09,896 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:25:09,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:25:09,947 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:25:09,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:09 WrapperNode [2020-11-07 00:25:09,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:25:09,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:25:09,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:25:09,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:25:09,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:09" (1/1) ... [2020-11-07 00:25:09,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:09" (1/1) ... [2020-11-07 00:25:09,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:09" (1/1) ... [2020-11-07 00:25:09,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:09" (1/1) ... [2020-11-07 00:25:10,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:09" (1/1) ... [2020-11-07 00:25:10,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:09" (1/1) ... [2020-11-07 00:25:10,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:09" (1/1) ... [2020-11-07 00:25:10,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:25:10,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:25:10,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:25:10,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:25:10,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:25:10,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:25:10,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:25:10,150 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:25:10,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-11-07 00:25:10,150 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2020-11-07 00:25:10,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-11-07 00:25:10,151 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:25:10,151 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:25:10,151 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:25:10,152 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:25:10,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:25:10,153 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-11-07 00:25:10,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-07 00:25:10,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:25:10,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:25:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2020-11-07 00:25:10,154 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-11-07 00:25:10,155 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:25:10,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:25:10,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:25:10,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:25:10,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:25:10,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-07 00:25:10,865 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:25:10,866 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-07 00:25:10,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:25:10 BoogieIcfgContainer [2020-11-07 00:25:10,868 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:25:10,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:25:10,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:25:10,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:25:10,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:25:09" (1/3) ... [2020-11-07 00:25:10,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56406295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:25:10, skipping insertion in model container [2020-11-07 00:25:10,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:09" (2/3) ... [2020-11-07 00:25:10,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56406295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:25:10, skipping insertion in model container [2020-11-07 00:25:10,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:25:10" (3/3) ... [2020-11-07 00:25:10,877 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2020-11-07 00:25:10,894 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:25:10,898 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:25:10,912 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:25:10,936 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:25:10,936 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:25:10,936 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:25:10,936 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:25:10,936 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:25:10,937 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:25:10,937 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:25:10,937 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:25:10,953 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states. [2020-11-07 00:25:10,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-07 00:25:10,964 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:10,965 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 00:25:10,966 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:10,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:10,972 INFO L82 PathProgramCache]: Analyzing trace with hash 580661350, now seen corresponding path program 1 times [2020-11-07 00:25:10,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:10,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382794956] [2020-11-07 00:25:10,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:11,056 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:25:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:11,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:25:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:11,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:25:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:11,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:25:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:11,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:25:11,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382794956] [2020-11-07 00:25:11,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:25:11,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:25:11,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85284800] [2020-11-07 00:25:11,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:25:11,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:25:11,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:25:11,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:25:11,320 INFO L87 Difference]: Start difference. First operand 97 states. Second operand 4 states. [2020-11-07 00:25:11,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:25:11,730 INFO L93 Difference]: Finished difference Result 173 states and 202 transitions. [2020-11-07 00:25:11,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:25:11,746 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-11-07 00:25:11,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:25:11,757 INFO L225 Difference]: With dead ends: 173 [2020-11-07 00:25:11,758 INFO L226 Difference]: Without dead ends: 87 [2020-11-07 00:25:11,763 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 00:25:11,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-07 00:25:11,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-11-07 00:25:11,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-07 00:25:11,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2020-11-07 00:25:11,832 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 40 [2020-11-07 00:25:11,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:25:11,833 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2020-11-07 00:25:11,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:25:11,833 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2020-11-07 00:25:11,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-07 00:25:11,836 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:11,837 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 00:25:11,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:25:11,837 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:11,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:11,838 INFO L82 PathProgramCache]: Analyzing trace with hash 997701105, now seen corresponding path program 1 times [2020-11-07 00:25:11,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:11,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961332208] [2020-11-07 00:25:11,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:11,843 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:25:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:11,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:25:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:11,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:25:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:12,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:25:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:12,058 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 00:25:12,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961332208] [2020-11-07 00:25:12,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:25:12,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 00:25:12,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110257845] [2020-11-07 00:25:12,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 00:25:12,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:25:12,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 00:25:12,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 00:25:12,062 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand 6 states. [2020-11-07 00:25:12,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:25:12,390 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-11-07 00:25:12,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 00:25:12,391 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-11-07 00:25:12,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:25:12,395 INFO L225 Difference]: With dead ends: 124 [2020-11-07 00:25:12,395 INFO L226 Difference]: Without dead ends: 92 [2020-11-07 00:25:12,397 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 00:25:12,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-07 00:25:12,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-11-07 00:25:12,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-07 00:25:12,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-11-07 00:25:12,416 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 49 [2020-11-07 00:25:12,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:25:12,417 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-11-07 00:25:12,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 00:25:12,417 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-11-07 00:25:12,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-07 00:25:12,419 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:12,419 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 00:25:12,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:25:12,420 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:12,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:12,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1233779619, now seen corresponding path program 1 times [2020-11-07 00:25:12,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:12,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699132930] [2020-11-07 00:25:12,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:12,426 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:25:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:12,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:25:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:12,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 00:25:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:12,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 00:25:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:12,645 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 00:25:12,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699132930] [2020-11-07 00:25:12,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:25:12,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 00:25:12,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214169596] [2020-11-07 00:25:12,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 00:25:12,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:25:12,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 00:25:12,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 00:25:12,651 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states. [2020-11-07 00:25:13,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:25:13,035 INFO L93 Difference]: Finished difference Result 128 states and 139 transitions. [2020-11-07 00:25:13,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 00:25:13,035 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-11-07 00:25:13,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:25:13,037 INFO L225 Difference]: With dead ends: 128 [2020-11-07 00:25:13,038 INFO L226 Difference]: Without dead ends: 96 [2020-11-07 00:25:13,039 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 00:25:13,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-11-07 00:25:13,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2020-11-07 00:25:13,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-07 00:25:13,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-11-07 00:25:13,055 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 52 [2020-11-07 00:25:13,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:25:13,055 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-11-07 00:25:13,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 00:25:13,055 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-11-07 00:25:13,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-07 00:25:13,057 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:13,058 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 00:25:13,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 00:25:13,058 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:13,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:13,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1845658467, now seen corresponding path program 1 times [2020-11-07 00:25:13,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:13,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737148280] [2020-11-07 00:25:13,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:13,062 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:25:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:25:13,102 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:25:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:25:13,147 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:25:13,198 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:25:13,198 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:25:13,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 00:25:13,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:25:13 BoogieIcfgContainer [2020-11-07 00:25:13,227 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:25:13,232 INFO L168 Benchmark]: Toolchain (without parser) took 3637.14 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 132.1 MB in the beginning and 127.1 MB in the end (delta: 5.0 MB). Peak memory consumption was 37.0 MB. Max. memory is 8.0 GB. [2020-11-07 00:25:13,232 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 156.2 MB. Free memory is still 130.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:25:13,234 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.55 ms. Allocated memory is still 156.2 MB. Free memory was 131.4 MB in the beginning and 121.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 00:25:13,236 INFO L168 Benchmark]: Boogie Preprocessor took 93.24 ms. Allocated memory is still 156.2 MB. Free memory was 121.2 MB in the beginning and 119.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:25:13,238 INFO L168 Benchmark]: RCFGBuilder took 823.17 ms. Allocated memory is still 156.2 MB. Free memory was 119.4 MB in the beginning and 128.8 MB in the end (delta: -9.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 8.0 GB. [2020-11-07 00:25:13,241 INFO L168 Benchmark]: TraceAbstraction took 2357.28 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 128.3 MB in the beginning and 127.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 8.0 GB. [2020-11-07 00:25:13,251 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 156.2 MB. Free memory is still 130.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 343.55 ms. Allocated memory is still 156.2 MB. Free memory was 131.4 MB in the beginning and 121.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 93.24 ms. Allocated memory is still 156.2 MB. Free memory was 121.2 MB in the beginning and 119.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 823.17 ms. Allocated memory is still 156.2 MB. Free memory was 119.4 MB in the beginning and 128.8 MB in the end (delta: -9.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2357.28 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 128.3 MB in the beginning and 127.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 33.2 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 74. Possible FailurePath: [L74] float x = -0.0f; [L75] float y = 0.0f; [L77] CALL, EXPR fmax_float(x, y) [L45] CALL, EXPR __fpclassify_float(x) [L22] __uint32_t w; [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (w) = gf_u.word [L30] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L32-L33] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L35-L36] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L38] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L41] return 0; [L45] RET, EXPR __fpclassify_float(x) [L45] COND TRUE __fpclassify_float(x) == 0 [L46] return y; [L77] RET, EXPR fmax_float(x, y) [L77] float res = fmax_float(x, y); [L80] EXPR res == 0.0f && __signbit_float(res) == 0 [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L81] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1252a.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: 2.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.1s, 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, 0.6s 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...