./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1011b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1011b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 10784a87e48316f2b03c13799bd6ebc99b9b18e5987e0f86e07dc775e21d10ae --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 18:20:44,739 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 18:20:44,813 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 18:20:44,817 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 18:20:44,818 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 18:20:44,854 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 18:20:44,855 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 18:20:44,855 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 18:20:44,856 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 18:20:44,856 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 18:20:44,856 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 18:20:44,857 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 18:20:44,857 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 18:20:44,858 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 18:20:44,858 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 18:20:44,860 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 18:20:44,861 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 18:20:44,862 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 18:20:44,862 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 18:20:44,862 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 18:20:44,862 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 18:20:44,863 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 18:20:44,863 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 18:20:44,864 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 18:20:44,864 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 18:20:44,864 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 18:20:44,865 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 18:20:44,865 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 18:20:44,865 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 18:20:44,866 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 18:20:44,866 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 18:20:44,866 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 18:20:44,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 18:20:44,867 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 18:20:44,867 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 18:20:44,867 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 18:20:44,868 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 18:20:44,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 18:20:44,868 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 18:20:44,869 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 18:20:44,869 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 18:20:44,869 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 18:20:44,870 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10784a87e48316f2b03c13799bd6ebc99b9b18e5987e0f86e07dc775e21d10ae [2024-11-11 18:20:45,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 18:20:45,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 18:20:45,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 18:20:45,217 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 18:20:45,217 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 18:20:45,219 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1011b.c [2024-11-11 18:20:46,775 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 18:20:47,014 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 18:20:47,014 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1011b.c [2024-11-11 18:20:47,027 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/372067dc5/28ea6d99a2b044858bdf46c13504af42/FLAGfdb4f75eb [2024-11-11 18:20:47,046 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/372067dc5/28ea6d99a2b044858bdf46c13504af42 [2024-11-11 18:20:47,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 18:20:47,050 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 18:20:47,051 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 18:20:47,051 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 18:20:47,057 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 18:20:47,058 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:20:47" (1/1) ... [2024-11-11 18:20:47,060 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a0057f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:47, skipping insertion in model container [2024-11-11 18:20:47,060 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:20:47" (1/1) ... [2024-11-11 18:20:47,081 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 18:20:47,291 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1011b.c[1146,1159] [2024-11-11 18:20:47,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 18:20:47,304 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 18:20:47,322 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1011b.c[1146,1159] [2024-11-11 18:20:47,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 18:20:47,338 INFO L204 MainTranslator]: Completed translation [2024-11-11 18:20:47,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:47 WrapperNode [2024-11-11 18:20:47,339 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 18:20:47,340 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 18:20:47,340 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 18:20:47,340 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 18:20:47,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:47" (1/1) ... [2024-11-11 18:20:47,357 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:47" (1/1) ... [2024-11-11 18:20:47,377 INFO L138 Inliner]: procedures = 17, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2024-11-11 18:20:47,378 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 18:20:47,379 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 18:20:47,379 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 18:20:47,379 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 18:20:47,390 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:47" (1/1) ... [2024-11-11 18:20:47,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:47" (1/1) ... [2024-11-11 18:20:47,392 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:47" (1/1) ... [2024-11-11 18:20:47,404 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-11-11 18:20:47,405 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:47" (1/1) ... [2024-11-11 18:20:47,405 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:47" (1/1) ... [2024-11-11 18:20:47,412 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:47" (1/1) ... [2024-11-11 18:20:47,416 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:47" (1/1) ... [2024-11-11 18:20:47,418 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:47" (1/1) ... [2024-11-11 18:20:47,419 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:47" (1/1) ... [2024-11-11 18:20:47,422 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 18:20:47,423 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 18:20:47,423 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 18:20:47,423 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 18:20:47,424 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:47" (1/1) ... [2024-11-11 18:20:47,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 18:20:47,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 18:20:47,461 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-11 18:20:47,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-11 18:20:47,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 18:20:47,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 18:20:47,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-11 18:20:47,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-11 18:20:47,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-11 18:20:47,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-11 18:20:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-11-11 18:20:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-11-11 18:20:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-11-11 18:20:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-11-11 18:20:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-11 18:20:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-11 18:20:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-11 18:20:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-11 18:20:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-11-11 18:20:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-11-11 18:20:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-11-11 18:20:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-11-11 18:20:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 18:20:47,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 18:20:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-11 18:20:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-11 18:20:47,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-11 18:20:47,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-11 18:20:47,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-11 18:20:47,652 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 18:20:47,655 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 18:20:47,897 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-11 18:20:47,897 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 18:20:47,911 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 18:20:47,911 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-11 18:20:47,912 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:20:47 BoogieIcfgContainer [2024-11-11 18:20:47,912 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 18:20:47,915 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 18:20:47,916 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 18:20:47,919 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 18:20:47,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 06:20:47" (1/3) ... [2024-11-11 18:20:47,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed05b05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:20:47, skipping insertion in model container [2024-11-11 18:20:47,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:47" (2/3) ... [2024-11-11 18:20:47,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed05b05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:20:47, skipping insertion in model container [2024-11-11 18:20:47,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:20:47" (3/3) ... [2024-11-11 18:20:47,923 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011b.c [2024-11-11 18:20:47,936 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 18:20:47,937 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 18:20:47,991 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 18:20:48,002 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5d4a68ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 18:20:48,003 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 18:20:48,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:20:48,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-11 18:20:48,013 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 18:20:48,014 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 18:20:48,015 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 18:20:48,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 18:20:48,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1641221055, now seen corresponding path program 1 times [2024-11-11 18:20:48,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 18:20:48,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26188523] [2024-11-11 18:20:48,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 18:20:48,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 18:20:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 18:20:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 18:20:48,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 18:20:48,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26188523] [2024-11-11 18:20:48,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26188523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 18:20:48,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 18:20:48,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 18:20:48,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226813727] [2024-11-11 18:20:48,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 18:20:48,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-11 18:20:48,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 18:20:48,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-11 18:20:48,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 18:20:48,207 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:20:48,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 18:20:48,219 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2024-11-11 18:20:48,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-11 18:20:48,222 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-11 18:20:48,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 18:20:48,227 INFO L225 Difference]: With dead ends: 36 [2024-11-11 18:20:48,228 INFO L226 Difference]: Without dead ends: 16 [2024-11-11 18:20:48,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 18:20:48,234 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 18:20:48,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 18:20:48,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-11 18:20:48,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-11 18:20:48,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:20:48,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2024-11-11 18:20:48,265 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2024-11-11 18:20:48,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 18:20:48,265 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2024-11-11 18:20:48,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:20:48,266 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2024-11-11 18:20:48,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-11 18:20:48,266 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 18:20:48,267 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 18:20:48,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 18:20:48,267 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 18:20:48,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 18:20:48,268 INFO L85 PathProgramCache]: Analyzing trace with hash 558264036, now seen corresponding path program 1 times [2024-11-11 18:20:48,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 18:20:48,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659743986] [2024-11-11 18:20:48,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 18:20:48,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 18:20:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-11 18:20:48,310 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-11 18:20:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-11 18:20:48,361 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-11 18:20:48,361 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-11 18:20:48,363 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-11 18:20:48,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-11 18:20:48,369 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-11 18:20:48,393 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-11 18:20:48,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 06:20:48 BoogieIcfgContainer [2024-11-11 18:20:48,400 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-11 18:20:48,400 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-11 18:20:48,400 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-11 18:20:48,401 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-11 18:20:48,401 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:20:47" (3/4) ... [2024-11-11 18:20:48,404 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-11 18:20:48,406 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-11 18:20:48,409 INFO L158 Benchmark]: Toolchain (without parser) took 1357.04ms. Allocated memory is still 157.3MB. Free memory was 119.0MB in the beginning and 98.9MB in the end (delta: 20.2MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2024-11-11 18:20:48,409 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 113.2MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-11 18:20:48,409 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.16ms. Allocated memory is still 157.3MB. Free memory was 119.0MB in the beginning and 106.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-11 18:20:48,411 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.43ms. Allocated memory is still 157.3MB. Free memory was 106.4MB in the beginning and 104.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-11 18:20:48,411 INFO L158 Benchmark]: Boogie Preprocessor took 43.34ms. Allocated memory is still 157.3MB. Free memory was 104.8MB in the beginning and 102.3MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-11 18:20:48,412 INFO L158 Benchmark]: RCFGBuilder took 489.15ms. Allocated memory is still 157.3MB. Free memory was 102.3MB in the beginning and 125.3MB in the end (delta: -23.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-11 18:20:48,412 INFO L158 Benchmark]: TraceAbstraction took 484.15ms. Allocated memory is still 157.3MB. Free memory was 124.5MB in the beginning and 99.3MB in the end (delta: 25.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-11 18:20:48,415 INFO L158 Benchmark]: Witness Printer took 5.60ms. Allocated memory is still 157.3MB. Free memory was 99.3MB in the beginning and 98.9MB in the end (delta: 417.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-11 18:20:48,417 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 113.2MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.16ms. Allocated memory is still 157.3MB. Free memory was 119.0MB in the beginning and 106.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.43ms. Allocated memory is still 157.3MB. Free memory was 106.4MB in the beginning and 104.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 43.34ms. Allocated memory is still 157.3MB. Free memory was 104.8MB in the beginning and 102.3MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 489.15ms. Allocated memory is still 157.3MB. Free memory was 102.3MB in the beginning and 125.3MB in the end (delta: -23.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 484.15ms. Allocated memory is still 157.3MB. Free memory was 124.5MB in the beginning and 99.3MB in the end (delta: 25.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 5.60ms. Allocated memory is still 157.3MB. Free memory was 99.3MB in the beginning and 98.9MB in the end (delta: 417.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 52]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 51, overapproximation of someUnaryFLOAToperation at line 47. Possible FailurePath: [L47] float x = -0.0f; [L48] CALL, EXPR fabs_float(x) [L15] __uint32_t ix; VAL [x=62] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (ix) = gf_u.word [L22] ieee_float_shape_type sf_u; [L23] sf_u.word = (ix & 0x7fffffff) [L24] EXPR sf_u.value [L24] (x) = sf_u.value [L26] return x; VAL [\result=61, ix=7] [L48] RET, EXPR fabs_float(x) [L48] float res = fabs_float(x); [L51] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=61] [L51] EXPR res == 0.0f && __signbit_float(res) == 0 [L51] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L52] reach_error() VAL [res=61] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 19 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-11 18:20:48,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1011b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 10784a87e48316f2b03c13799bd6ebc99b9b18e5987e0f86e07dc775e21d10ae --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 18:20:50,805 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 18:20:50,888 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-11 18:20:50,899 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 18:20:50,900 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 18:20:50,939 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 18:20:50,940 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 18:20:50,940 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 18:20:50,941 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 18:20:50,941 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 18:20:50,942 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 18:20:50,942 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 18:20:50,943 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 18:20:50,947 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 18:20:50,947 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 18:20:50,948 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 18:20:50,948 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 18:20:50,948 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 18:20:50,948 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 18:20:50,949 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 18:20:50,949 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 18:20:50,949 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 18:20:50,952 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 18:20:50,952 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-11 18:20:50,952 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-11 18:20:50,952 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 18:20:50,953 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-11 18:20:50,953 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 18:20:50,953 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 18:20:50,954 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 18:20:50,954 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 18:20:50,954 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 18:20:50,954 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 18:20:50,955 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 18:20:50,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 18:20:50,955 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 18:20:50,956 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 18:20:50,956 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 18:20:50,957 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-11 18:20:50,957 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-11 18:20:50,958 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 18:20:50,958 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 18:20:50,958 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 18:20:50,959 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 18:20:50,959 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10784a87e48316f2b03c13799bd6ebc99b9b18e5987e0f86e07dc775e21d10ae [2024-11-11 18:20:51,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 18:20:51,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 18:20:51,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 18:20:51,334 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 18:20:51,334 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 18:20:51,337 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1011b.c [2024-11-11 18:20:53,137 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 18:20:53,355 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 18:20:53,355 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1011b.c [2024-11-11 18:20:53,367 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/263a01587/8810d7f92d264e5a82aa957a6c01b93b/FLAG1e5aff01d [2024-11-11 18:20:53,723 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/263a01587/8810d7f92d264e5a82aa957a6c01b93b [2024-11-11 18:20:53,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 18:20:53,726 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 18:20:53,728 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 18:20:53,728 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 18:20:53,734 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 18:20:53,735 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:20:53" (1/1) ... [2024-11-11 18:20:53,736 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b988a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:53, skipping insertion in model container [2024-11-11 18:20:53,736 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:20:53" (1/1) ... [2024-11-11 18:20:53,756 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 18:20:53,971 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1011b.c[1146,1159] [2024-11-11 18:20:53,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 18:20:53,994 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 18:20:54,020 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1011b.c[1146,1159] [2024-11-11 18:20:54,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 18:20:54,044 INFO L204 MainTranslator]: Completed translation [2024-11-11 18:20:54,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:54 WrapperNode [2024-11-11 18:20:54,045 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 18:20:54,047 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 18:20:54,047 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 18:20:54,047 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 18:20:54,055 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:54" (1/1) ... [2024-11-11 18:20:54,070 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:54" (1/1) ... [2024-11-11 18:20:54,097 INFO L138 Inliner]: procedures = 20, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2024-11-11 18:20:54,098 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 18:20:54,099 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 18:20:54,101 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 18:20:54,101 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 18:20:54,111 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:54" (1/1) ... [2024-11-11 18:20:54,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:54" (1/1) ... [2024-11-11 18:20:54,114 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:54" (1/1) ... [2024-11-11 18:20:54,136 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-11-11 18:20:54,137 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:54" (1/1) ... [2024-11-11 18:20:54,137 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:54" (1/1) ... [2024-11-11 18:20:54,154 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:54" (1/1) ... [2024-11-11 18:20:54,162 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:54" (1/1) ... [2024-11-11 18:20:54,164 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:54" (1/1) ... [2024-11-11 18:20:54,169 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:54" (1/1) ... [2024-11-11 18:20:54,173 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 18:20:54,178 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 18:20:54,178 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 18:20:54,178 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 18:20:54,179 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:54" (1/1) ... [2024-11-11 18:20:54,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 18:20:54,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 18:20:54,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-11 18:20:54,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-11 18:20:54,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 18:20:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-11 18:20:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-11 18:20:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-11 18:20:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-11 18:20:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-11 18:20:54,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2024-11-11 18:20:54,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2024-11-11 18:20:54,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2024-11-11 18:20:54,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2024-11-11 18:20:54,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-11 18:20:54,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-11 18:20:54,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-11 18:20:54,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-11 18:20:54,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 18:20:54,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 18:20:54,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2024-11-11 18:20:54,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2024-11-11 18:20:54,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2024-11-11 18:20:54,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2024-11-11 18:20:54,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-11 18:20:54,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-11 18:20:54,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-11 18:20:54,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-11-11 18:20:54,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-11 18:20:54,413 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 18:20:54,415 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 18:20:54,607 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-11 18:20:54,608 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 18:20:54,619 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 18:20:54,619 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-11 18:20:54,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:20:54 BoogieIcfgContainer [2024-11-11 18:20:54,620 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 18:20:54,622 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 18:20:54,622 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 18:20:54,625 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 18:20:54,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 06:20:53" (1/3) ... [2024-11-11 18:20:54,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42448b4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:20:54, skipping insertion in model container [2024-11-11 18:20:54,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:20:54" (2/3) ... [2024-11-11 18:20:54,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42448b4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:20:54, skipping insertion in model container [2024-11-11 18:20:54,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:20:54" (3/3) ... [2024-11-11 18:20:54,629 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011b.c [2024-11-11 18:20:54,647 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 18:20:54,647 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 18:20:54,720 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 18:20:54,729 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7a7cca9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 18:20:54,729 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 18:20:54,734 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:20:54,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-11 18:20:54,739 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 18:20:54,740 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 18:20:54,741 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 18:20:54,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 18:20:54,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1641221055, now seen corresponding path program 1 times [2024-11-11 18:20:54,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-11 18:20:54,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440861543] [2024-11-11 18:20:54,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 18:20:54,766 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-11 18:20:54,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-11 18:20:54,770 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-11 18:20:54,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-11 18:20:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 18:20:54,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-11 18:20:54,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 18:20:54,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 18:20:54,918 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 18:20:54,919 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-11 18:20:54,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440861543] [2024-11-11 18:20:54,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440861543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 18:20:54,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 18:20:54,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 18:20:54,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562315114] [2024-11-11 18:20:54,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 18:20:54,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-11 18:20:54,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-11 18:20:54,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-11 18:20:54,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 18:20:54,960 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:20:54,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 18:20:54,978 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2024-11-11 18:20:54,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-11 18:20:54,981 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-11 18:20:54,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 18:20:54,988 INFO L225 Difference]: With dead ends: 36 [2024-11-11 18:20:54,989 INFO L226 Difference]: Without dead ends: 16 [2024-11-11 18:20:54,994 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 18:20:54,999 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 18:20:55,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 18:20:55,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-11 18:20:55,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-11 18:20:55,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:20:55,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2024-11-11 18:20:55,042 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2024-11-11 18:20:55,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 18:20:55,042 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2024-11-11 18:20:55,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:20:55,043 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2024-11-11 18:20:55,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-11 18:20:55,043 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 18:20:55,044 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 18:20:55,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-11 18:20:55,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-11 18:20:55,245 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 18:20:55,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 18:20:55,246 INFO L85 PathProgramCache]: Analyzing trace with hash 558264036, now seen corresponding path program 1 times [2024-11-11 18:20:55,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-11 18:20:55,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885488548] [2024-11-11 18:20:55,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 18:20:55,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-11 18:20:55,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-11 18:20:55,251 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-11 18:20:55,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-11 18:20:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 18:20:55,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-11 18:20:55,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 18:20:55,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-11 18:20:55,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-11-11 18:20:55,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 18:20:55,639 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 18:20:55,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-11 18:20:55,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885488548] [2024-11-11 18:20:55,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885488548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 18:20:55,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 18:20:55,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-11 18:20:55,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305292509] [2024-11-11 18:20:55,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 18:20:55,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-11 18:20:55,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-11 18:20:55,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-11 18:20:55,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-11 18:20:55,643 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:20:55,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 18:20:55,789 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2024-11-11 18:20:55,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-11 18:20:55,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-11 18:20:55,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 18:20:55,792 INFO L225 Difference]: With dead ends: 19 [2024-11-11 18:20:55,792 INFO L226 Difference]: Without dead ends: 16 [2024-11-11 18:20:55,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-11 18:20:55,803 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 18:20:55,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 49 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 18:20:55,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-11 18:20:55,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-11 18:20:55,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0) internal successors, (15), 15 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:20:55,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2024-11-11 18:20:55,807 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 11 [2024-11-11 18:20:55,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 18:20:55,808 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2024-11-11 18:20:55,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:20:55,808 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2024-11-11 18:20:55,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-11 18:20:55,809 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 18:20:55,809 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 18:20:55,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-11 18:20:56,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-11 18:20:56,013 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 18:20:56,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 18:20:56,013 INFO L85 PathProgramCache]: Analyzing trace with hash -2014349959, now seen corresponding path program 1 times [2024-11-11 18:20:56,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-11 18:20:56,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740825684] [2024-11-11 18:20:56,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 18:20:56,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-11 18:20:56,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-11 18:20:56,018 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-11 18:20:56,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-11 18:20:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 18:20:56,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-11 18:20:56,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 18:20:56,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 18:20:56,539 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 18:20:56,540 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-11 18:20:56,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740825684] [2024-11-11 18:20:56,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1740825684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 18:20:56,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 18:20:56,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-11 18:20:56,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707286020] [2024-11-11 18:20:56,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 18:20:56,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-11 18:20:56,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-11 18:20:56,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-11 18:20:56,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-11 18:20:56,546 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:20:56,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 18:20:56,892 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2024-11-11 18:20:56,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-11 18:20:56,893 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-11 18:20:56,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 18:20:56,893 INFO L225 Difference]: With dead ends: 16 [2024-11-11 18:20:56,893 INFO L226 Difference]: Without dead ends: 0 [2024-11-11 18:20:56,894 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-11-11 18:20:56,895 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 18:20:56,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 38 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 18:20:56,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-11 18:20:56,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-11 18:20:56,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:20:56,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-11 18:20:56,896 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2024-11-11 18:20:56,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 18:20:56,897 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-11 18:20:56,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:20:56,897 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-11 18:20:56,897 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-11 18:20:56,900 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-11 18:20:56,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-11 18:20:57,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-11 18:20:57,108 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-11 18:20:57,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-11 18:20:57,134 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-11 18:20:57,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 06:20:57 BoogieIcfgContainer [2024-11-11 18:20:57,144 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-11 18:20:57,145 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-11 18:20:57,145 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-11 18:20:57,145 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-11 18:20:57,146 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:20:54" (3/4) ... [2024-11-11 18:20:57,148 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-11 18:20:57,159 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-11 18:20:57,159 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-11 18:20:57,159 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-11 18:20:57,160 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-11 18:20:57,251 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-11 18:20:57,252 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-11 18:20:57,253 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-11 18:20:57,253 INFO L158 Benchmark]: Toolchain (without parser) took 3526.87ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 37.9MB in the beginning and 35.1MB in the end (delta: 2.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-11 18:20:57,253 INFO L158 Benchmark]: CDTParser took 1.09ms. Allocated memory is still 52.4MB. Free memory is still 35.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-11 18:20:57,254 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.03ms. Allocated memory is still 71.3MB. Free memory was 37.7MB in the beginning and 42.1MB in the end (delta: -4.4MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2024-11-11 18:20:57,254 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.18ms. Allocated memory is still 71.3MB. Free memory was 42.1MB in the beginning and 40.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-11 18:20:57,254 INFO L158 Benchmark]: Boogie Preprocessor took 77.71ms. Allocated memory is still 71.3MB. Free memory was 40.6MB in the beginning and 38.0MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-11 18:20:57,255 INFO L158 Benchmark]: RCFGBuilder took 441.80ms. Allocated memory is still 71.3MB. Free memory was 38.0MB in the beginning and 45.2MB in the end (delta: -7.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-11 18:20:57,255 INFO L158 Benchmark]: TraceAbstraction took 2522.71ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 44.5MB in the beginning and 39.3MB in the end (delta: 5.2MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2024-11-11 18:20:57,256 INFO L158 Benchmark]: Witness Printer took 107.68ms. Allocated memory is still 86.0MB. Free memory was 39.3MB in the beginning and 35.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-11 18:20:57,257 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.09ms. Allocated memory is still 52.4MB. Free memory is still 35.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 318.03ms. Allocated memory is still 71.3MB. Free memory was 37.7MB in the beginning and 42.1MB in the end (delta: -4.4MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.18ms. Allocated memory is still 71.3MB. Free memory was 42.1MB in the beginning and 40.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 77.71ms. Allocated memory is still 71.3MB. Free memory was 40.6MB in the beginning and 38.0MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 441.80ms. Allocated memory is still 71.3MB. Free memory was 38.0MB in the beginning and 45.2MB in the end (delta: -7.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2522.71ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 44.5MB in the beginning and 39.3MB in the end (delta: 5.2MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. * Witness Printer took 107.68ms. Allocated memory is still 86.0MB. Free memory was 39.3MB in the beginning and 35.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 52]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 106 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 72 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 100 IncrementalHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 34 mSDtfsCounter, 100 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 20, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 10 QuantifiedInterpolants, 348 SizeOfPredicates, 11 NumberOfNonLiveVariables, 136 ConjunctsInSsa, 39 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-11 18:20:57,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE