./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_0730a.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_0730a.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 08b98e45599512b8d6c489b1dd455db4184e1609dc88e012fc4f2e92ac326cf0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 22:29:35,907 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 22:29:35,962 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 22:29:35,965 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 22:29:35,966 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 22:29:35,989 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 22:29:35,990 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 22:29:35,990 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 22:29:35,991 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 22:29:35,991 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 22:29:35,992 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 22:29:35,992 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 22:29:35,993 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 22:29:35,994 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 22:29:35,994 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 22:29:35,995 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 22:29:35,995 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 22:29:35,995 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 22:29:35,995 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 22:29:35,995 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 22:29:35,996 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 22:29:35,998 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 22:29:35,999 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 22:29:35,999 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 22:29:35,999 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 22:29:35,999 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 22:29:35,999 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 22:29:36,000 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 22:29:36,000 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 22:29:36,000 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 22:29:36,000 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 22:29:36,000 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 22:29:36,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 22:29:36,001 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 22:29:36,001 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 22:29:36,001 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 22:29:36,002 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 22:29:36,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 22:29:36,002 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 22:29:36,002 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 22:29:36,002 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 22:29:36,004 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 22:29:36,004 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08b98e45599512b8d6c489b1dd455db4184e1609dc88e012fc4f2e92ac326cf0 [2024-10-23 22:29:36,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 22:29:36,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 22:29:36,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 22:29:36,252 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 22:29:36,252 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 22:29:36,253 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0730a.c [2024-10-23 22:29:37,546 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 22:29:37,703 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 22:29:37,703 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0730a.c [2024-10-23 22:29:37,709 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb2085dd7/7e54c497a47a4e20b2f9075f5afc927a/FLAGbadf3928d [2024-10-23 22:29:37,723 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb2085dd7/7e54c497a47a4e20b2f9075f5afc927a [2024-10-23 22:29:37,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 22:29:37,726 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 22:29:37,727 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 22:29:37,727 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 22:29:37,732 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 22:29:37,732 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:29:37" (1/1) ... [2024-10-23 22:29:37,733 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@749e0ec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:37, skipping insertion in model container [2024-10-23 22:29:37,733 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:29:37" (1/1) ... [2024-10-23 22:29:37,749 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 22:29:37,924 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_0730a.c[2102,2115] [2024-10-23 22:29:37,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 22:29:37,938 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 22:29:37,965 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_0730a.c[2102,2115] [2024-10-23 22:29:37,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 22:29:37,979 INFO L204 MainTranslator]: Completed translation [2024-10-23 22:29:37,980 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:37 WrapperNode [2024-10-23 22:29:37,980 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 22:29:37,981 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 22:29:37,981 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 22:29:37,981 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 22:29:37,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:37" (1/1) ... [2024-10-23 22:29:37,990 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:37" (1/1) ... [2024-10-23 22:29:38,005 INFO L138 Inliner]: procedures = 17, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 146 [2024-10-23 22:29:38,006 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 22:29:38,006 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 22:29:38,006 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 22:29:38,006 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 22:29:38,014 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:37" (1/1) ... [2024-10-23 22:29:38,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:37" (1/1) ... [2024-10-23 22:29:38,016 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:37" (1/1) ... [2024-10-23 22:29:38,028 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 22:29:38,028 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:37" (1/1) ... [2024-10-23 22:29:38,029 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:37" (1/1) ... [2024-10-23 22:29:38,037 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:37" (1/1) ... [2024-10-23 22:29:38,043 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:37" (1/1) ... [2024-10-23 22:29:38,044 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:37" (1/1) ... [2024-10-23 22:29:38,049 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:37" (1/1) ... [2024-10-23 22:29:38,056 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 22:29:38,057 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 22:29:38,057 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 22:29:38,057 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 22:29:38,058 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:37" (1/1) ... [2024-10-23 22:29:38,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 22:29:38,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:29:38,088 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 22:29:38,090 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 22:29:38,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 22:29:38,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 22:29:38,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-23 22:29:38,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-23 22:29:38,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-23 22:29:38,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-23 22:29:38,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-23 22:29:38,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-23 22:29:38,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-23 22:29:38,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-23 22:29:38,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-23 22:29:38,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-23 22:29:38,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-23 22:29:38,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-23 22:29:38,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-23 22:29:38,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-23 22:29:38,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-23 22:29:38,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-23 22:29:38,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 22:29:38,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 22:29:38,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-23 22:29:38,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-23 22:29:38,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-23 22:29:38,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-23 22:29:38,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-23 22:29:38,217 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 22:29:38,219 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 22:29:38,415 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-10-23 22:29:38,416 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 22:29:38,438 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 22:29:38,439 INFO L314 CfgBuilder]: Removed 8 assume(true) statements. [2024-10-23 22:29:38,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:29:38 BoogieIcfgContainer [2024-10-23 22:29:38,439 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 22:29:38,441 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 22:29:38,441 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 22:29:38,443 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 22:29:38,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:29:37" (1/3) ... [2024-10-23 22:29:38,444 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b014c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:29:38, skipping insertion in model container [2024-10-23 22:29:38,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:37" (2/3) ... [2024-10-23 22:29:38,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b014c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:29:38, skipping insertion in model container [2024-10-23 22:29:38,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:29:38" (3/3) ... [2024-10-23 22:29:38,446 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0730a.c [2024-10-23 22:29:38,457 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 22:29:38,458 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 22:29:38,498 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 22:29:38,504 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;@2f1870a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 22:29:38,505 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 22:29:38,508 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 37 states have (on average 1.6756756756756757) internal successors, (62), 38 states have internal predecessors, (62), 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 22:29:38,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-23 22:29:38,512 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:29:38,513 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:29:38,513 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:29:38,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:29:38,517 INFO L85 PathProgramCache]: Analyzing trace with hash 181060110, now seen corresponding path program 1 times [2024-10-23 22:29:38,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:29:38,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305753188] [2024-10-23 22:29:38,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:29:38,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:29:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:29:38,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 22:29:38,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 22:29:38,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305753188] [2024-10-23 22:29:38,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305753188] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:29:38,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 22:29:38,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 22:29:38,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585187262] [2024-10-23 22:29:38,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:29:38,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 22:29:38,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 22:29:38,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 22:29:38,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 22:29:38,667 INFO L87 Difference]: Start difference. First operand has 39 states, 37 states have (on average 1.6756756756756757) internal successors, (62), 38 states have internal predecessors, (62), 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 22:29:38,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:29:38,693 INFO L93 Difference]: Finished difference Result 77 states and 123 transitions. [2024-10-23 22:29:38,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 22:29:38,695 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 22:29:38,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:29:38,701 INFO L225 Difference]: With dead ends: 77 [2024-10-23 22:29:38,702 INFO L226 Difference]: Without dead ends: 37 [2024-10-23 22:29:38,704 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 22:29:38,706 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 22:29:38,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 22:29:38,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-10-23 22:29:38,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-10-23 22:29:38,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 36 states have internal predecessors, (50), 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 22:29:38,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 50 transitions. [2024-10-23 22:29:38,731 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 50 transitions. Word has length 9 [2024-10-23 22:29:38,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:29:38,732 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 50 transitions. [2024-10-23 22:29:38,732 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 22:29:38,732 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 50 transitions. [2024-10-23 22:29:38,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-23 22:29:38,733 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:29:38,733 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:29:38,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 22:29:38,733 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:29:38,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:29:38,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1105953668, now seen corresponding path program 1 times [2024-10-23 22:29:38,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 22:29:38,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813351836] [2024-10-23 22:29:38,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:29:38,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 22:29:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-23 22:29:38,778 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-23 22:29:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-23 22:29:38,870 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-23 22:29:38,870 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-23 22:29:38,876 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-23 22:29:38,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 22:29:38,894 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-23 22:29:38,911 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-23 22:29:38,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:29:38 BoogieIcfgContainer [2024-10-23 22:29:38,914 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-23 22:29:38,914 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-23 22:29:38,915 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-23 22:29:38,915 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-23 22:29:38,916 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:29:38" (3/4) ... [2024-10-23 22:29:38,917 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-23 22:29:38,918 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-23 22:29:38,922 INFO L158 Benchmark]: Toolchain (without parser) took 1191.99ms. Allocated memory was 155.2MB in the beginning and 228.6MB in the end (delta: 73.4MB). Free memory was 84.4MB in the beginning and 190.3MB in the end (delta: -105.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-23 22:29:38,923 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 155.2MB. Free memory was 122.6MB in the beginning and 122.5MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-23 22:29:38,924 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.91ms. Allocated memory was 155.2MB in the beginning and 228.6MB in the end (delta: 73.4MB). Free memory was 84.2MB in the beginning and 195.8MB in the end (delta: -111.7MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2024-10-23 22:29:38,924 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.16ms. Allocated memory is still 228.6MB. Free memory was 195.8MB in the beginning and 194.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-23 22:29:38,925 INFO L158 Benchmark]: Boogie Preprocessor took 50.11ms. Allocated memory is still 228.6MB. Free memory was 194.8MB in the beginning and 191.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-23 22:29:38,925 INFO L158 Benchmark]: RCFGBuilder took 382.54ms. Allocated memory is still 228.6MB. Free memory was 191.6MB in the beginning and 172.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-10-23 22:29:38,927 INFO L158 Benchmark]: TraceAbstraction took 472.89ms. Allocated memory is still 228.6MB. Free memory was 171.7MB in the beginning and 190.3MB in the end (delta: -18.6MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-10-23 22:29:38,927 INFO L158 Benchmark]: Witness Printer took 3.51ms. Allocated memory is still 228.6MB. Free memory is still 190.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-23 22:29:38,929 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 155.2MB. Free memory was 122.6MB in the beginning and 122.5MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 252.91ms. Allocated memory was 155.2MB in the beginning and 228.6MB in the end (delta: 73.4MB). Free memory was 84.2MB in the beginning and 195.8MB in the end (delta: -111.7MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.16ms. Allocated memory is still 228.6MB. Free memory was 195.8MB in the beginning and 194.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.11ms. Allocated memory is still 228.6MB. Free memory was 194.8MB in the beginning and 191.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 382.54ms. Allocated memory is still 228.6MB. Free memory was 191.6MB in the beginning and 172.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 472.89ms. Allocated memory is still 228.6MB. Free memory was 171.7MB in the beginning and 190.3MB in the end (delta: -18.6MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 3.51ms. Allocated memory is still 228.6MB. Free memory is still 190.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 109]: 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 someBinaryArithmeticFLOAToperation at line 29. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L103] float x = 1.0f / 0.0f; [L105] CALL, EXPR __ieee754_sqrtf(x) [L17] float z; [L18] __uint32_t r, hx; [L19] __int32_t ix, s, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L22] ieee_float_shape_type gf_u; [L23] gf_u.value = (x) [L24] EXPR gf_u.word [L24] (ix) = gf_u.word [L26] hx = ix & 0x7fffffff VAL [hx=2139095040, ix=-8388608, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4286578701] [L28] COND TRUE !((hx) < 0x7f800000L) [L29] return x * x + x; VAL [ix=-8388608, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4286578701] [L105] RET, EXPR __ieee754_sqrtf(x) [L105] float res = __ieee754_sqrtf(x); [L108] CALL, EXPR isinf_float(res) [L85] __int32_t ix; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4286578702] [L87] ieee_float_shape_type gf_u; [L88] gf_u.value = (x) [L89] EXPR gf_u.word [L89] (ix) = gf_u.word [L91] ix &= 0x7fffffff [L92] return ((ix) == 0x7f800000L); [L108] RET, EXPR isinf_float(res) [L108] COND TRUE !isinf_float(res) [L109] reach_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] - 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, 48 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 48 mSDtfsCounter, 4 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-10-23 22:29:38,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/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_0730a.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 08b98e45599512b8d6c489b1dd455db4184e1609dc88e012fc4f2e92ac326cf0 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 22:29:41,035 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 22:29:41,096 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-23 22:29:41,100 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 22:29:41,101 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 22:29:41,130 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 22:29:41,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 22:29:41,132 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 22:29:41,132 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 22:29:41,133 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 22:29:41,133 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 22:29:41,133 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 22:29:41,133 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 22:29:41,134 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 22:29:41,134 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 22:29:41,136 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 22:29:41,137 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 22:29:41,137 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 22:29:41,138 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 22:29:41,138 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 22:29:41,138 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 22:29:41,138 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 22:29:41,139 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 22:29:41,141 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-23 22:29:41,141 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-23 22:29:41,142 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 22:29:41,142 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-23 22:29:41,142 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 22:29:41,142 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 22:29:41,142 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 22:29:41,142 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 22:29:41,143 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 22:29:41,143 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 22:29:41,143 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 22:29:41,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 22:29:41,143 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 22:29:41,143 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 22:29:41,143 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 22:29:41,144 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-23 22:29:41,144 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-23 22:29:41,144 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 22:29:41,144 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 22:29:41,144 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 22:29:41,145 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 22:29:41,145 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-23 22:29:41,145 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08b98e45599512b8d6c489b1dd455db4184e1609dc88e012fc4f2e92ac326cf0 [2024-10-23 22:29:41,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 22:29:41,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 22:29:41,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 22:29:41,437 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 22:29:41,437 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 22:29:41,440 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0730a.c [2024-10-23 22:29:42,863 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 22:29:43,021 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 22:29:43,023 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0730a.c [2024-10-23 22:29:43,032 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfddd3e9f/a15a7de2b1644f508842df0eaf96ee70/FLAG08c99445e [2024-10-23 22:29:43,047 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfddd3e9f/a15a7de2b1644f508842df0eaf96ee70 [2024-10-23 22:29:43,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 22:29:43,053 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 22:29:43,059 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 22:29:43,060 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 22:29:43,065 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 22:29:43,065 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:29:43" (1/1) ... [2024-10-23 22:29:43,066 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ce25abf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:43, skipping insertion in model container [2024-10-23 22:29:43,066 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:29:43" (1/1) ... [2024-10-23 22:29:43,085 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 22:29:43,284 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_0730a.c[2102,2115] [2024-10-23 22:29:43,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 22:29:43,301 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 22:29:43,327 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_0730a.c[2102,2115] [2024-10-23 22:29:43,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 22:29:43,350 INFO L204 MainTranslator]: Completed translation [2024-10-23 22:29:43,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:43 WrapperNode [2024-10-23 22:29:43,350 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 22:29:43,351 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 22:29:43,351 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 22:29:43,351 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 22:29:43,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:43" (1/1) ... [2024-10-23 22:29:43,365 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:43" (1/1) ... [2024-10-23 22:29:43,386 INFO L138 Inliner]: procedures = 20, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 129 [2024-10-23 22:29:43,387 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 22:29:43,390 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 22:29:43,390 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 22:29:43,390 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 22:29:43,400 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:43" (1/1) ... [2024-10-23 22:29:43,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:43" (1/1) ... [2024-10-23 22:29:43,406 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:43" (1/1) ... [2024-10-23 22:29:43,427 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 22:29:43,427 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:43" (1/1) ... [2024-10-23 22:29:43,427 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:43" (1/1) ... [2024-10-23 22:29:43,434 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:43" (1/1) ... [2024-10-23 22:29:43,437 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:43" (1/1) ... [2024-10-23 22:29:43,438 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:43" (1/1) ... [2024-10-23 22:29:43,439 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:43" (1/1) ... [2024-10-23 22:29:43,443 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 22:29:43,444 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 22:29:43,444 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 22:29:43,444 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 22:29:43,445 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:43" (1/1) ... [2024-10-23 22:29:43,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 22:29:43,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 22:29:43,475 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 22:29:43,477 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 22:29:43,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 22:29:43,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-23 22:29:43,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-23 22:29:43,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-10-23 22:29:43,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-10-23 22:29:43,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-23 22:29:43,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2024-10-23 22:29:43,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2024-10-23 22:29:43,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2024-10-23 22:29:43,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2024-10-23 22:29:43,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-23 22:29:43,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-23 22:29:43,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-10-23 22:29:43,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-10-23 22:29:43,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 22:29:43,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 22:29:43,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2024-10-23 22:29:43,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2024-10-23 22:29:43,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2024-10-23 22:29:43,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2024-10-23 22:29:43,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-23 22:29:43,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-23 22:29:43,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-10-23 22:29:43,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-10-23 22:29:43,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-23 22:29:43,585 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 22:29:43,587 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 22:29:44,383 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-10-23 22:29:44,383 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 22:29:44,399 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 22:29:44,400 INFO L314 CfgBuilder]: Removed 8 assume(true) statements. [2024-10-23 22:29:44,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:29:44 BoogieIcfgContainer [2024-10-23 22:29:44,400 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 22:29:44,401 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 22:29:44,401 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 22:29:44,404 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 22:29:44,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:29:43" (1/3) ... [2024-10-23 22:29:44,419 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3812d936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:29:44, skipping insertion in model container [2024-10-23 22:29:44,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:43" (2/3) ... [2024-10-23 22:29:44,423 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3812d936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:29:44, skipping insertion in model container [2024-10-23 22:29:44,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:29:44" (3/3) ... [2024-10-23 22:29:44,425 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0730a.c [2024-10-23 22:29:44,450 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 22:29:44,454 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 22:29:44,515 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 22:29:44,521 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;@23c41066, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 22:29:44,522 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 22:29:44,525 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.7) internal successors, (51), 31 states have internal predecessors, (51), 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 22:29:44,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-23 22:29:44,529 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:29:44,529 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:29:44,530 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:29:44,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:29:44,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1901076196, now seen corresponding path program 1 times [2024-10-23 22:29:44,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-23 22:29:44,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431144914] [2024-10-23 22:29:44,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:29:44,547 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 22:29:44,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-23 22:29:44,550 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 22:29:44,551 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 22:29:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:29:44,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-23 22:29:44,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:29:44,694 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 22:29:44,694 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 22:29:44,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-23 22:29:44,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431144914] [2024-10-23 22:29:44,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431144914] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:29:44,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 22:29:44,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 22:29:44,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749121044] [2024-10-23 22:29:44,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:29:44,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 22:29:44,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-23 22:29:44,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 22:29:44,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 22:29:44,749 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.7) internal successors, (51), 31 states have internal predecessors, (51), 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 22:29:44,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:29:44,786 INFO L93 Difference]: Finished difference Result 63 states and 101 transitions. [2024-10-23 22:29:44,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 22:29:44,788 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 22:29:44,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:29:44,795 INFO L225 Difference]: With dead ends: 63 [2024-10-23 22:29:44,795 INFO L226 Difference]: Without dead ends: 30 [2024-10-23 22:29:44,797 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 22:29:44,801 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 22:29:44,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 22:29:44,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-10-23 22:29:44,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-10-23 22:29:44,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 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 22:29:44,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2024-10-23 22:29:44,828 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 9 [2024-10-23 22:29:44,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:29:44,829 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2024-10-23 22:29:44,829 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 22:29:44,829 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2024-10-23 22:29:44,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-23 22:29:44,830 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:29:44,830 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:29:44,836 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 (2)] Forceful destruction successful, exit code 0 [2024-10-23 22:29:45,031 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 22:29:45,032 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:29:45,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:29:45,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1954489013, now seen corresponding path program 1 times [2024-10-23 22:29:45,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-23 22:29:45,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333306940] [2024-10-23 22:29:45,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:29:45,033 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 22:29:45,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-23 22:29:45,035 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 22:29:45,051 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 22:29:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:29:45,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-23 22:29:45,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:29:45,470 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 22:29:45,471 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 22:29:45,471 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-23 22:29:45,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333306940] [2024-10-23 22:29:45,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333306940] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:29:45,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 22:29:45,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-23 22:29:45,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844775000] [2024-10-23 22:29:45,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:29:45,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-23 22:29:45,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-23 22:29:45,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-23 22:29:45,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-23 22:29:45,474 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:29:46,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:29:46,538 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2024-10-23 22:29:46,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-23 22:29:46,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-10-23 22:29:46,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:29:46,540 INFO L225 Difference]: With dead ends: 38 [2024-10-23 22:29:46,541 INFO L226 Difference]: Without dead ends: 31 [2024-10-23 22:29:46,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-23 22:29:46,542 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 29 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-23 22:29:46,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 148 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-23 22:29:46,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-10-23 22:29:46,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2024-10-23 22:29:46,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 states have internal predecessors, (38), 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 22:29:46,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2024-10-23 22:29:46,550 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 11 [2024-10-23 22:29:46,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:29:46,550 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2024-10-23 22:29:46,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 22:29:46,551 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2024-10-23 22:29:46,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-23 22:29:46,551 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 22:29:46,551 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 22:29:46,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-23 22:29:46,757 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 22:29:46,758 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 22:29:46,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 22:29:46,759 INFO L85 PathProgramCache]: Analyzing trace with hash -395899984, now seen corresponding path program 1 times [2024-10-23 22:29:46,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-23 22:29:46,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438417550] [2024-10-23 22:29:46,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 22:29:46,760 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 22:29:46,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-23 22:29:46,762 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 22:29:46,763 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 22:29:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 22:29:46,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-23 22:29:46,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 22:29:47,010 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 22:29:47,015 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 34 treesize of output 18 [2024-10-23 22:29:47,098 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 22:29:47,098 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 22:29:47,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-23 22:29:47,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438417550] [2024-10-23 22:29:47,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438417550] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 22:29:47,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 22:29:47,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 22:29:47,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747359946] [2024-10-23 22:29:47,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 22:29:47,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-23 22:29:47,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-23 22:29:47,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-23 22:29:47,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-23 22:29:47,099 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 22:29:47,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 22:29:47,195 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2024-10-23 22:29:47,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-23 22:29:47,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2024-10-23 22:29:47,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 22:29:47,196 INFO L225 Difference]: With dead ends: 30 [2024-10-23 22:29:47,196 INFO L226 Difference]: Without dead ends: 0 [2024-10-23 22:29:47,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 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 22:29:47,197 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 4 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 22:29:47,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 22:29:47,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-23 22:29:47,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-23 22:29:47,199 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 22:29:47,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-23 22:29:47,199 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2024-10-23 22:29:47,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 22:29:47,199 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-23 22:29:47,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 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 22:29:47,200 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-23 22:29:47,200 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-23 22:29:47,202 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-23 22:29:47,213 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 22:29:47,403 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 22:29:47,407 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-23 22:29:47,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-23 22:29:47,448 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-23 22:29:47,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:29:47 BoogieIcfgContainer [2024-10-23 22:29:47,457 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-23 22:29:47,458 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-23 22:29:47,458 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-23 22:29:47,458 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-23 22:29:47,458 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:29:44" (3/4) ... [2024-10-23 22:29:47,460 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-23 22:29:47,465 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2024-10-23 22:29:47,465 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-10-23 22:29:47,465 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-23 22:29:47,466 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-23 22:29:47,549 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-23 22:29:47,550 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-23 22:29:47,550 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-23 22:29:47,550 INFO L158 Benchmark]: Toolchain (without parser) took 4497.87ms. Allocated memory was 83.9MB in the beginning and 130.0MB in the end (delta: 46.1MB). Free memory was 48.0MB in the beginning and 79.9MB in the end (delta: -31.9MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. [2024-10-23 22:29:47,551 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 83.9MB. Free memory is still 65.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-23 22:29:47,551 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.39ms. Allocated memory is still 83.9MB. Free memory was 47.7MB in the beginning and 59.1MB in the end (delta: -11.3MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2024-10-23 22:29:47,551 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.39ms. Allocated memory is still 83.9MB. Free memory was 59.1MB in the beginning and 57.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-23 22:29:47,551 INFO L158 Benchmark]: Boogie Preprocessor took 53.52ms. Allocated memory is still 83.9MB. Free memory was 57.4MB in the beginning and 54.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-23 22:29:47,552 INFO L158 Benchmark]: RCFGBuilder took 956.01ms. Allocated memory is still 83.9MB. Free memory was 54.3MB in the beginning and 35.8MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-10-23 22:29:47,552 INFO L158 Benchmark]: TraceAbstraction took 3056.17ms. Allocated memory was 83.9MB in the beginning and 130.0MB in the end (delta: 46.1MB). Free memory was 35.1MB in the beginning and 85.4MB in the end (delta: -50.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-23 22:29:47,552 INFO L158 Benchmark]: Witness Printer took 92.18ms. Allocated memory is still 130.0MB. Free memory was 85.4MB in the beginning and 79.9MB in the end (delta: 5.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-23 22:29:47,553 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 83.9MB. Free memory is still 65.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 291.39ms. Allocated memory is still 83.9MB. Free memory was 47.7MB in the beginning and 59.1MB in the end (delta: -11.3MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.39ms. Allocated memory is still 83.9MB. Free memory was 59.1MB in the beginning and 57.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.52ms. Allocated memory is still 83.9MB. Free memory was 57.4MB in the beginning and 54.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 956.01ms. Allocated memory is still 83.9MB. Free memory was 54.3MB in the beginning and 35.8MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 3056.17ms. Allocated memory was 83.9MB in the beginning and 130.0MB in the end (delta: 46.1MB). Free memory was 35.1MB in the beginning and 85.4MB in the end (delta: -50.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 92.18ms. Allocated memory is still 130.0MB. Free memory was 85.4MB in the beginning and 79.9MB in the end (delta: 5.5MB). 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: 109]: 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, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 188 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 119 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 75 IncrementalHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 69 mSDtfsCounter, 75 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 8 QuantifiedInterpolants, 225 SizeOfPredicates, 8 NumberOfNonLiveVariables, 131 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 86]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 75]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2024-10-23 22:29:47,593 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