./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1092a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1092a.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 22f65bf7dc6be28e766baed8be33578320f214b34c577175c650fbf680c0e83b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 22:33:22,442 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 22:33:22,511 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 22:33:22,530 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 22:33:22,532 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 22:33:22,554 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 22:33:22,556 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 22:33:22,556 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 22:33:22,557 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 22:33:22,558 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 22:33:22,558 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 22:33:22,558 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 22:33:22,559 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 22:33:22,559 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 22:33:22,560 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 22:33:22,561 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 22:33:22,561 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 22:33:22,561 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 22:33:22,561 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 22:33:22,562 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 22:33:22,562 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 22:33:22,562 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 22:33:22,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 22:33:22,565 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 22:33:22,565 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 22:33:22,566 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 22:33:22,566 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 22:33:22,566 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 22:33:22,566 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 22:33:22,566 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 22:33:22,567 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 22:33:22,567 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 22:33:22,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 22:33:22,567 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 22:33:22,567 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 22:33:22,567 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 22:33:22,567 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 22:33:22,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 22:33:22,568 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 22:33:22,568 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 22:33:22,568 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 22:33:22,569 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 22:33:22,569 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22f65bf7dc6be28e766baed8be33578320f214b34c577175c650fbf680c0e83b [2024-10-23 22:33:22,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 22:33:22,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 22:33:22,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 22:33:22,784 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 22:33:22,785 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 22:33:22,786 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1092a.c [2024-10-23 22:33:24,128 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 22:33:24,277 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 22:33:24,277 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1092a.c [2024-10-23 22:33:24,284 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4812f62f/1e2bafb140ab4dad941c43138aabfd6d/FLAG2f662058e [2024-10-23 22:33:24,296 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4812f62f/1e2bafb140ab4dad941c43138aabfd6d [2024-10-23 22:33:24,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 22:33:24,300 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 22:33:24,302 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 22:33:24,302 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 22:33:24,307 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 22:33:24,307 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:33:24" (1/1) ... [2024-10-23 22:33:24,308 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@301df009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:24, skipping insertion in model container [2024-10-23 22:33:24,308 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:33:24" (1/1) ... [2024-10-23 22:33:24,324 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 22:33:24,468 WARN L248 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_1092a.c[1753,1766] [2024-10-23 22:33:24,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 22:33:24,478 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 22:33:24,495 WARN L248 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_1092a.c[1753,1766] [2024-10-23 22:33:24,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 22:33:24,509 INFO L204 MainTranslator]: Completed translation [2024-10-23 22:33:24,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:24 WrapperNode [2024-10-23 22:33:24,510 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 22:33:24,511 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 22:33:24,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 22:33:24,511 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 22:33:24,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:24" (1/1) ... [2024-10-23 22:33:24,526 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:24" (1/1) ... [2024-10-23 22:33:24,542 INFO L138 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 126 [2024-10-23 22:33:24,542 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 22:33:24,543 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 22:33:24,543 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 22:33:24,543 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 22:33:24,557 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:24" (1/1) ... [2024-10-23 22:33:24,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:24" (1/1) ... [2024-10-23 22:33:24,560 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:24" (1/1) ... [2024-10-23 22:33:24,574 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]. [2024-10-23 22:33:24,575 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:24" (1/1) ... [2024-10-23 22:33:24,575 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:24" (1/1) ... [2024-10-23 22:33:24,581 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:24" (1/1) ... [2024-10-23 22:33:24,584 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:24" (1/1) ... [2024-10-23 22:33:24,585 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:24" (1/1) ... [2024-10-23 22:33:24,586 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:24" (1/1) ... [2024-10-23 22:33:24,588 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 22:33:24,589 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 22:33:24,589 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 22:33:24,589 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 22:33:24,590 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:24" (1/1) ... [2024-10-23 22:33:24,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 22:33:24,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:33:24,620 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) [2024-10-23 22:33:24,623 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 [2024-10-23 22:33:24,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 22:33:24,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 22:33:24,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-23 22:33:24,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-23 22:33:24,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-23 22:33:24,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-23 22:33:24,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-23 22:33:24,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-23 22:33:24,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-23 22:33:24,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-23 22:33:24,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-23 22:33:24,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-23 22:33:24,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-23 22:33:24,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-23 22:33:24,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-23 22:33:24,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-23 22:33:24,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-23 22:33:24,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-23 22:33:24,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 22:33:24,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 22:33:24,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-23 22:33:24,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-23 22:33:24,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-23 22:33:24,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-23 22:33:24,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-23 22:33:24,730 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 22:33:24,731 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 22:33:24,889 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2024-10-23 22:33:24,890 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 22:33:24,910 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 22:33:24,910 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-23 22:33:24,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:33:24 BoogieIcfgContainer [2024-10-23 22:33:24,910 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 22:33:24,912 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 22:33:24,912 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 22:33:24,915 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 22:33:24,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:33:24" (1/3) ... [2024-10-23 22:33:24,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55305288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:33:24, skipping insertion in model container [2024-10-23 22:33:24,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:24" (2/3) ... [2024-10-23 22:33:24,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55305288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:33:24, skipping insertion in model container [2024-10-23 22:33:24,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:33:24" (3/3) ... [2024-10-23 22:33:24,917 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092a.c [2024-10-23 22:33:24,931 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 22:33:24,931 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 22:33:24,977 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 22:33:24,982 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;@3b7da49c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 22:33:24,983 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 22:33:24,986 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 38 states have internal predecessors, (61), 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) [2024-10-23 22:33:24,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-23 22:33:24,990 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:33:24,991 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:33:24,991 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:33:24,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:33:24,995 INFO L85 PathProgramCache]: Analyzing trace with hash 904509171, now seen corresponding path program 1 times [2024-10-23 22:33:25,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:33:25,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756683375] [2024-10-23 22:33:25,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:33:25,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:33:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:33:25,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:33:25,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:33:25,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756683375] [2024-10-23 22:33:25,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756683375] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:33:25,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 22:33:25,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 22:33:25,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678426200] [2024-10-23 22:33:25,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:33:25,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 22:33:25,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:33:25,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 22:33:25,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 22:33:25,189 INFO L87 Difference]: Start difference. First operand has 39 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 38 states have internal predecessors, (61), 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) [2024-10-23 22:33:25,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:33:25,223 INFO L93 Difference]: Finished difference Result 77 states and 121 transitions. [2024-10-23 22:33:25,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 22:33:25,229 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 [2024-10-23 22:33:25,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:33:25,235 INFO L225 Difference]: With dead ends: 77 [2024-10-23 22:33:25,236 INFO L226 Difference]: Without dead ends: 37 [2024-10-23 22:33:25,239 INFO L431 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 [2024-10-23 22:33:25,243 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 22:33:25,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 22:33:25,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-10-23 22:33:25,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-10-23 22:33:25,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 36 states have internal predecessors, (52), 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) [2024-10-23 22:33:25,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 52 transitions. [2024-10-23 22:33:25,273 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 52 transitions. Word has length 9 [2024-10-23 22:33:25,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:33:25,274 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 52 transitions. [2024-10-23 22:33:25,274 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) [2024-10-23 22:33:25,274 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2024-10-23 22:33:25,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-23 22:33:25,276 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:33:25,276 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:33:25,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 22:33:25,277 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:33:25,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:33:25,278 INFO L85 PathProgramCache]: Analyzing trace with hash -612412918, now seen corresponding path program 1 times [2024-10-23 22:33:25,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:33:25,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584790407] [2024-10-23 22:33:25,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:33:25,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:33:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-23 22:33:25,339 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-23 22:33:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-23 22:33:25,382 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-23 22:33:25,383 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-23 22:33:25,384 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-23 22:33:25,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 22:33:25,388 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-23 22:33:25,404 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-23 22:33:25,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:33:25 BoogieIcfgContainer [2024-10-23 22:33:25,407 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-23 22:33:25,407 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-23 22:33:25,407 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-23 22:33:25,407 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-23 22:33:25,408 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:33:24" (3/4) ... [2024-10-23 22:33:25,410 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-23 22:33:25,411 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-23 22:33:25,413 INFO L158 Benchmark]: Toolchain (without parser) took 1112.17ms. Allocated memory is still 176.2MB. Free memory was 124.0MB in the beginning and 130.3MB in the end (delta: -6.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-23 22:33:25,413 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 176.2MB. Free memory is still 139.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-23 22:33:25,413 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.42ms. Allocated memory is still 176.2MB. Free memory was 124.0MB in the beginning and 110.9MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-23 22:33:25,415 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.03ms. Allocated memory is still 176.2MB. Free memory was 110.9MB in the beginning and 108.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-23 22:33:25,415 INFO L158 Benchmark]: Boogie Preprocessor took 45.54ms. Allocated memory is still 176.2MB. Free memory was 108.8MB in the beginning and 106.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-23 22:33:25,416 INFO L158 Benchmark]: RCFGBuilder took 321.81ms. Allocated memory is still 176.2MB. Free memory was 106.1MB in the beginning and 88.4MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-23 22:33:25,416 INFO L158 Benchmark]: TraceAbstraction took 494.78ms. Allocated memory is still 176.2MB. Free memory was 87.8MB in the beginning and 131.4MB in the end (delta: -43.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-23 22:33:25,416 INFO L158 Benchmark]: Witness Printer took 4.34ms. Allocated memory is still 176.2MB. Free memory was 131.4MB in the beginning and 130.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-23 22:33:25,420 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 176.2MB. Free memory is still 139.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 208.42ms. Allocated memory is still 176.2MB. Free memory was 124.0MB in the beginning and 110.9MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.03ms. Allocated memory is still 176.2MB. Free memory was 110.9MB in the beginning and 108.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.54ms. Allocated memory is still 176.2MB. Free memory was 108.8MB in the beginning and 106.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 321.81ms. Allocated memory is still 176.2MB. Free memory was 106.1MB in the beginning and 88.4MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 494.78ms. Allocated memory is still 176.2MB. Free memory was 87.8MB in the beginning and 131.4MB in the end (delta: -43.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.34ms. Allocated memory is still 176.2MB. Free memory was 131.4MB in the beginning and 130.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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: 83]: 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 82, overapproximation of someUnaryFLOAToperation at line 78, overapproximation of someBinaryArithmeticFLOAToperation at line 46. Possible FailurePath: [L13] static const float huge_ceil = 1.0e30; [L78] float x = -0.0f; [L79] CALL, EXPR ceil_float(x) [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; VAL [huge_ceil=1000000000000000000000000000000] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f VAL [huge_ceil=1000000000000000000000000000000, i0=2147483647, ix=2147483647, j0=128, x=1000000000000000000000000000009] [L25] COND FALSE !(j0 < 23) VAL [huge_ceil=1000000000000000000000000000000, i0=2147483647, ix=2147483647, x=1000000000000000000000000000009] [L45] COND TRUE !((ix) < 0x7f800000L) [L46] return x + x; VAL [huge_ceil=1000000000000000000000000000000, i0=2147483647, x=1000000000000000000000000000009] [L79] RET, EXPR ceil_float(x) [L79] float res = ceil_float(x); [L82] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [huge_ceil=1000000000000000000000000000000, res=1000000000000000000000000000010] [L82] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [huge_ceil=1000000000000000000000000000000] [L82] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L83] reach_error() VAL [huge_ceil=1000000000000000000000000000000, res=1000000000000000000000000000010] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 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, 51 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 51 mSDtfsCounter, 3 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=39occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 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 [2024-10-23 22:33:25,447 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1092a.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 22f65bf7dc6be28e766baed8be33578320f214b34c577175c650fbf680c0e83b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 22:33:27,767 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 22:33:27,830 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-23 22:33:27,835 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 22:33:27,835 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 22:33:27,855 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 22:33:27,855 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 22:33:27,855 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 22:33:27,856 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 22:33:27,856 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 22:33:27,856 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 22:33:27,857 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 22:33:27,857 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 22:33:27,857 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 22:33:27,858 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 22:33:27,858 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 22:33:27,858 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 22:33:27,858 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 22:33:27,862 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 22:33:27,862 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 22:33:27,863 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 22:33:27,863 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 22:33:27,863 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 22:33:27,863 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-23 22:33:27,864 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-23 22:33:27,864 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 22:33:27,864 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-23 22:33:27,864 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 22:33:27,864 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 22:33:27,865 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 22:33:27,865 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 22:33:27,865 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 22:33:27,865 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 22:33:27,865 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 22:33:27,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 22:33:27,874 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 22:33:27,874 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 22:33:27,874 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 22:33:27,878 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-23 22:33:27,878 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-23 22:33:27,878 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 22:33:27,879 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 22:33:27,879 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 22:33:27,879 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 22:33:27,879 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-23 22:33:27,879 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22f65bf7dc6be28e766baed8be33578320f214b34c577175c650fbf680c0e83b [2024-10-23 22:33:28,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 22:33:28,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 22:33:28,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 22:33:28,166 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 22:33:28,166 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 22:33:28,168 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1092a.c [2024-10-23 22:33:29,520 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 22:33:29,710 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 22:33:29,712 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1092a.c [2024-10-23 22:33:29,721 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c666990b5/65672499dc744419a4329baa6cb009ab/FLAGc64f9958d [2024-10-23 22:33:29,735 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c666990b5/65672499dc744419a4329baa6cb009ab [2024-10-23 22:33:29,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 22:33:29,738 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 22:33:29,739 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 22:33:29,743 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 22:33:29,747 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 22:33:29,748 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:33:29" (1/1) ... [2024-10-23 22:33:29,748 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4baf16ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:29, skipping insertion in model container [2024-10-23 22:33:29,749 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:33:29" (1/1) ... [2024-10-23 22:33:29,766 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 22:33:29,933 WARN L248 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_1092a.c[1753,1766] [2024-10-23 22:33:29,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 22:33:29,950 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 22:33:29,976 WARN L248 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_1092a.c[1753,1766] [2024-10-23 22:33:29,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 22:33:29,998 INFO L204 MainTranslator]: Completed translation [2024-10-23 22:33:29,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:29 WrapperNode [2024-10-23 22:33:29,999 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 22:33:30,000 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 22:33:30,000 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 22:33:30,000 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 22:33:30,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:29" (1/1) ... [2024-10-23 22:33:30,021 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:29" (1/1) ... [2024-10-23 22:33:30,040 INFO L138 Inliner]: procedures = 19, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2024-10-23 22:33:30,041 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 22:33:30,043 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 22:33:30,043 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 22:33:30,043 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 22:33:30,058 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:29" (1/1) ... [2024-10-23 22:33:30,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:29" (1/1) ... [2024-10-23 22:33:30,063 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:29" (1/1) ... [2024-10-23 22:33:30,081 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]. [2024-10-23 22:33:30,081 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:29" (1/1) ... [2024-10-23 22:33:30,081 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:29" (1/1) ... [2024-10-23 22:33:30,093 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:29" (1/1) ... [2024-10-23 22:33:30,096 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:29" (1/1) ... [2024-10-23 22:33:30,101 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:29" (1/1) ... [2024-10-23 22:33:30,103 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:29" (1/1) ... [2024-10-23 22:33:30,109 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 22:33:30,110 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 22:33:30,110 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 22:33:30,110 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 22:33:30,111 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:29" (1/1) ... [2024-10-23 22:33:30,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 22:33:30,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:33:30,146 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) [2024-10-23 22:33:30,160 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 [2024-10-23 22:33:30,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 22:33:30,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-23 22:33:30,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-23 22:33:30,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-10-23 22:33:30,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-10-23 22:33:30,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-23 22:33:30,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2024-10-23 22:33:30,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2024-10-23 22:33:30,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2024-10-23 22:33:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2024-10-23 22:33:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-23 22:33:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-23 22:33:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-10-23 22:33:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-10-23 22:33:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 22:33:30,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 22:33:30,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2024-10-23 22:33:30,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2024-10-23 22:33:30,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2024-10-23 22:33:30,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2024-10-23 22:33:30,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-23 22:33:30,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-23 22:33:30,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-10-23 22:33:30,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-10-23 22:33:30,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-23 22:33:30,281 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 22:33:30,283 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 22:33:30,595 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2024-10-23 22:33:30,595 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 22:33:30,623 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 22:33:30,625 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-23 22:33:30,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:33:30 BoogieIcfgContainer [2024-10-23 22:33:30,638 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 22:33:30,640 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 22:33:30,640 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 22:33:30,646 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 22:33:30,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:33:29" (1/3) ... [2024-10-23 22:33:30,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f1eae3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:33:30, skipping insertion in model container [2024-10-23 22:33:30,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:33:29" (2/3) ... [2024-10-23 22:33:30,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f1eae3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:33:30, skipping insertion in model container [2024-10-23 22:33:30,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:33:30" (3/3) ... [2024-10-23 22:33:30,651 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092a.c [2024-10-23 22:33:30,675 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 22:33:30,675 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 22:33:30,727 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 22:33:30,732 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;@4960d903, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 22:33:30,733 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 22:33:30,736 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.72) internal successors, (43), 26 states have internal predecessors, (43), 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) [2024-10-23 22:33:30,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-23 22:33:30,740 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:33:30,740 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:33:30,741 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:33:30,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:33:30,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1673305909, now seen corresponding path program 1 times [2024-10-23 22:33:30,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-23 22:33:30,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963286247] [2024-10-23 22:33:30,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:33:30,755 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 [2024-10-23 22:33:30,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-23 22:33:30,759 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) [2024-10-23 22:33:30,765 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 [2024-10-23 22:33:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:33:30,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-23 22:33:30,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:33:30,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:33:30,870 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 22:33:30,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-23 22:33:30,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963286247] [2024-10-23 22:33:30,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [963286247] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:33:30,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 22:33:30,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 22:33:30,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235965346] [2024-10-23 22:33:30,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:33:30,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 22:33:30,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-23 22:33:30,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 22:33:30,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 22:33:30,896 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.72) internal successors, (43), 26 states have internal predecessors, (43), 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) [2024-10-23 22:33:30,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:33:30,913 INFO L93 Difference]: Finished difference Result 53 states and 85 transitions. [2024-10-23 22:33:30,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 22:33:30,915 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 [2024-10-23 22:33:30,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:33:30,921 INFO L225 Difference]: With dead ends: 53 [2024-10-23 22:33:30,921 INFO L226 Difference]: Without dead ends: 25 [2024-10-23 22:33:30,923 INFO L431 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 [2024-10-23 22:33:30,927 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 22:33:30,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 22:33:30,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-10-23 22:33:30,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-10-23 22:33:30,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 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) [2024-10-23 22:33:30,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2024-10-23 22:33:30,963 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 9 [2024-10-23 22:33:30,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:33:30,964 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2024-10-23 22:33:30,964 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) [2024-10-23 22:33:30,964 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2024-10-23 22:33:30,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-23 22:33:30,965 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:33:30,965 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:33:30,969 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 [2024-10-23 22:33:31,169 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 [2024-10-23 22:33:31,170 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:33:31,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:33:31,173 INFO L85 PathProgramCache]: Analyzing trace with hash -2130271498, now seen corresponding path program 1 times [2024-10-23 22:33:31,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-23 22:33:31,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736955980] [2024-10-23 22:33:31,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:33:31,174 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 [2024-10-23 22:33:31,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-23 22:33:31,179 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) [2024-10-23 22:33:31,180 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 [2024-10-23 22:33:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:33:31,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-23 22:33:31,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:33:31,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:33:31,447 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 22:33:31,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-23 22:33:31,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736955980] [2024-10-23 22:33:31,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [736955980] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:33:31,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 22:33:31,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 22:33:31,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496848070] [2024-10-23 22:33:31,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:33:31,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-23 22:33:31,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-23 22:33:31,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-23 22:33:31,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 22:33:31,453 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2024-10-23 22:33:31,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:33:31,659 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2024-10-23 22:33:31,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-23 22:33:31,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2024-10-23 22:33:31,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:33:31,661 INFO L225 Difference]: With dead ends: 36 [2024-10-23 22:33:31,661 INFO L226 Difference]: Without dead ends: 19 [2024-10-23 22:33:31,661 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-23 22:33:31,662 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 18 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-23 22:33:31,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 29 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-23 22:33:31,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-10-23 22:33:31,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-10-23 22:33:31,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 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) [2024-10-23 22:33:31,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2024-10-23 22:33:31,668 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 10 [2024-10-23 22:33:31,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:33:31,668 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2024-10-23 22:33:31,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2024-10-23 22:33:31,668 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2024-10-23 22:33:31,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-23 22:33:31,669 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:33:31,669 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:33:31,678 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 (3)] Forceful destruction successful, exit code 0 [2024-10-23 22:33:31,870 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 [2024-10-23 22:33:31,870 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:33:31,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:33:31,872 INFO L85 PathProgramCache]: Analyzing trace with hash -441447783, now seen corresponding path program 1 times [2024-10-23 22:33:31,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-23 22:33:31,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1340400799] [2024-10-23 22:33:31,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:33:31,872 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 [2024-10-23 22:33:31,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-23 22:33:31,875 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) [2024-10-23 22:33:31,876 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 [2024-10-23 22:33:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:33:31,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 22:33:31,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:33:32,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:33:32,059 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 22:33:32,059 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-23 22:33:32,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1340400799] [2024-10-23 22:33:32,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1340400799] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:33:32,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 22:33:32,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 22:33:32,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447645760] [2024-10-23 22:33:32,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:33:32,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 22:33:32,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-23 22:33:32,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 22:33:32,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 22:33:32,061 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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) [2024-10-23 22:33:32,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:33:32,107 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2024-10-23 22:33:32,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 22:33:32,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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 14 [2024-10-23 22:33:32,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:33:32,108 INFO L225 Difference]: With dead ends: 30 [2024-10-23 22:33:32,108 INFO L226 Difference]: Without dead ends: 19 [2024-10-23 22:33:32,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 22:33:32,109 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 22:33:32,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 22 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 22:33:32,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-10-23 22:33:32,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-10-23 22:33:32,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 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) [2024-10-23 22:33:32,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2024-10-23 22:33:32,112 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 14 [2024-10-23 22:33:32,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:33:32,112 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2024-10-23 22:33:32,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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) [2024-10-23 22:33:32,113 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2024-10-23 22:33:32,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-23 22:33:32,113 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:33:32,113 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:33:32,120 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 (4)] Ended with exit code 0 [2024-10-23 22:33:32,313 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 [2024-10-23 22:33:32,314 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:33:32,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:33:32,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1637862301, now seen corresponding path program 1 times [2024-10-23 22:33:32,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-23 22:33:32,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139622293] [2024-10-23 22:33:32,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:33:32,315 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 [2024-10-23 22:33:32,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-23 22:33:32,319 INFO L229 MonitoredProcess]: Starting monitored process 5 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) [2024-10-23 22:33:32,320 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 (5)] Waiting until timeout for monitored process [2024-10-23 22:33:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:33:32,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-23 22:33:32,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:33:32,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:33:32,445 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 22:33:32,445 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-23 22:33:32,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139622293] [2024-10-23 22:33:32,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139622293] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:33:32,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 22:33:32,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-23 22:33:32,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766375841] [2024-10-23 22:33:32,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:33:32,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-23 22:33:32,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-23 22:33:32,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-23 22:33:32,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-23 22:33:32,446 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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) [2024-10-23 22:33:32,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:33:32,533 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2024-10-23 22:33:32,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-23 22:33:32,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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 [2024-10-23 22:33:32,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:33:32,535 INFO L225 Difference]: With dead ends: 22 [2024-10-23 22:33:32,535 INFO L226 Difference]: Without dead ends: 19 [2024-10-23 22:33:32,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-23 22:33:32,538 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 22:33:32,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 31 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 22:33:32,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-10-23 22:33:32,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-10-23 22:33:32,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0) internal successors, (18), 18 states have internal predecessors, (18), 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) [2024-10-23 22:33:32,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2024-10-23 22:33:32,542 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 15 [2024-10-23 22:33:32,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:33:32,542 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2024-10-23 22:33:32,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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) [2024-10-23 22:33:32,542 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2024-10-23 22:33:32,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-23 22:33:32,543 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:33:32,543 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:33:32,548 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 (5)] Forceful destruction successful, exit code 0 [2024-10-23 22:33:32,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /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 [2024-10-23 22:33:32,744 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:33:32,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:33:32,744 INFO L85 PathProgramCache]: Analyzing trace with hash -2070340380, now seen corresponding path program 1 times [2024-10-23 22:33:32,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-23 22:33:32,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323265251] [2024-10-23 22:33:32,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:33:32,745 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 [2024-10-23 22:33:32,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-23 22:33:32,748 INFO L229 MonitoredProcess]: Starting monitored process 6 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) [2024-10-23 22:33:32,749 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 (6)] Waiting until timeout for monitored process [2024-10-23 22:33:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:33:32,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-23 22:33:32,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:33:32,923 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 [2024-10-23 22:33:32,926 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 32 treesize of output 16 [2024-10-23 22:33:32,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:33:32,972 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 22:33:32,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-23 22:33:32,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323265251] [2024-10-23 22:33:32,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323265251] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:33:32,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 22:33:32,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-23 22:33:32,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130115218] [2024-10-23 22:33:32,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:33:32,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-23 22:33:32,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-23 22:33:32,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-23 22:33:32,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-23 22:33:32,973 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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) [2024-10-23 22:33:33,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:33:33,168 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2024-10-23 22:33:33,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-23 22:33:33,170 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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 18 [2024-10-23 22:33:33,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:33:33,170 INFO L225 Difference]: With dead ends: 19 [2024-10-23 22:33:33,170 INFO L226 Difference]: Without dead ends: 0 [2024-10-23 22:33:33,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-10-23 22:33:33,175 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 17 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-23 22:33:33,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 30 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-23 22:33:33,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-23 22:33:33,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-23 22:33:33,176 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) [2024-10-23 22:33:33,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-23 22:33:33,176 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2024-10-23 22:33:33,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:33:33,176 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-23 22:33:33,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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) [2024-10-23 22:33:33,177 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-23 22:33:33,177 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-23 22:33:33,180 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-23 22:33:33,192 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 (6)] Forceful destruction successful, exit code 0 [2024-10-23 22:33:33,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /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 [2024-10-23 22:33:33,387 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-23 22:33:33,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-23 22:33:33,498 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-23 22:33:33,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:33:33 BoogieIcfgContainer [2024-10-23 22:33:33,528 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-23 22:33:33,528 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-23 22:33:33,528 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-23 22:33:33,529 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-23 22:33:33,529 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:33:30" (3/4) ... [2024-10-23 22:33:33,534 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-23 22:33:33,544 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2024-10-23 22:33:33,544 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-10-23 22:33:33,545 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-23 22:33:33,545 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-23 22:33:33,644 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-23 22:33:33,644 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-23 22:33:33,645 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-23 22:33:33,645 INFO L158 Benchmark]: Toolchain (without parser) took 3906.87ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 39.6MB in the beginning and 46.4MB in the end (delta: -6.7MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2024-10-23 22:33:33,645 INFO L158 Benchmark]: CDTParser took 4.04ms. Allocated memory is still 50.3MB. Free memory was 25.2MB in the beginning and 25.1MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-23 22:33:33,646 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.92ms. Allocated memory is still 60.8MB. Free memory was 39.4MB in the beginning and 25.9MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-23 22:33:33,646 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.72ms. Allocated memory is still 60.8MB. Free memory was 25.9MB in the beginning and 24.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-23 22:33:33,646 INFO L158 Benchmark]: Boogie Preprocessor took 66.48ms. Allocated memory is still 60.8MB. Free memory was 24.0MB in the beginning and 39.3MB in the end (delta: -15.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-23 22:33:33,646 INFO L158 Benchmark]: RCFGBuilder took 528.57ms. Allocated memory is still 60.8MB. Free memory was 39.3MB in the beginning and 39.6MB in the end (delta: -351.9kB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. [2024-10-23 22:33:33,647 INFO L158 Benchmark]: TraceAbstraction took 2888.36ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 39.0MB in the beginning and 51.1MB in the end (delta: -12.1MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. [2024-10-23 22:33:33,647 INFO L158 Benchmark]: Witness Printer took 116.35ms. Allocated memory is still 73.4MB. Free memory was 51.1MB in the beginning and 46.4MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-23 22:33:33,648 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 4.04ms. Allocated memory is still 50.3MB. Free memory was 25.2MB in the beginning and 25.1MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 259.92ms. Allocated memory is still 60.8MB. Free memory was 39.4MB in the beginning and 25.9MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.72ms. Allocated memory is still 60.8MB. Free memory was 25.9MB in the beginning and 24.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 66.48ms. Allocated memory is still 60.8MB. Free memory was 24.0MB in the beginning and 39.3MB in the end (delta: -15.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 528.57ms. Allocated memory is still 60.8MB. Free memory was 39.3MB in the beginning and 39.6MB in the end (delta: -351.9kB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2888.36ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 39.0MB in the beginning and 51.1MB in the end (delta: -12.1MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. * Witness Printer took 116.35ms. Allocated memory is still 73.4MB. Free memory was 51.1MB in the beginning and 46.4MB in the end (delta: 4.8MB). 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: 83]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.7s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 145 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 75 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 144 IncrementalHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 70 mSDtfsCounter, 144 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 26, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 61 ConstructedInterpolants, 1 QuantifiedInterpolants, 252 SizeOfPredicates, 14 NumberOfNonLiveVariables, 237 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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: 18]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2024-10-23 22:33:33,676 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