./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0920a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0920a.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 fdcf375e0f63a99aa336478d14a39a9f0916e41e4e2744057c95b8e96462ebe9 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 16:10:29,710 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 16:10:29,771 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 16:10:29,778 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 16:10:29,778 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 16:10:29,801 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 16:10:29,802 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 16:10:29,802 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 16:10:29,802 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 16:10:29,802 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 16:10:29,803 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 16:10:29,803 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 16:10:29,803 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 16:10:29,804 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 16:10:29,804 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 16:10:29,804 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 16:10:29,804 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 16:10:29,804 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 16:10:29,804 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 16:10:29,804 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 16:10:29,804 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 16:10:29,805 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 16:10:29,805 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 16:10:29,805 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 16:10:29,805 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 16:10:29,805 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 16:10:29,805 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 16:10:29,805 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 16:10:29,805 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 16:10:29,805 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 16:10:29,805 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 16:10:29,805 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 16:10:29,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 16:10:29,805 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 16:10:29,805 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 16:10:29,805 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 16:10:29,805 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 16:10:29,805 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 16:10:29,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 16:10:29,805 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 16:10:29,805 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 16:10:29,805 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 16:10:29,805 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 16:10:29,805 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> fdcf375e0f63a99aa336478d14a39a9f0916e41e4e2744057c95b8e96462ebe9 [2025-03-16 16:10:30,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 16:10:30,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 16:10:30,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 16:10:30,054 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 16:10:30,054 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 16:10:30,055 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0920a.c [2025-03-16 16:10:31,188 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/709f15d49/f24d70db6c9d4f12a70e1f584b689930/FLAGd038f2ed7 [2025-03-16 16:10:31,415 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 16:10:31,416 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0920a.c [2025-03-16 16:10:31,425 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/709f15d49/f24d70db6c9d4f12a70e1f584b689930/FLAGd038f2ed7 [2025-03-16 16:10:31,748 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/709f15d49/f24d70db6c9d4f12a70e1f584b689930 [2025-03-16 16:10:31,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 16:10:31,750 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 16:10:31,751 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 16:10:31,751 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 16:10:31,754 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 16:10:31,754 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 04:10:31" (1/1) ... [2025-03-16 16:10:31,755 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37553018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:31, skipping insertion in model container [2025-03-16 16:10:31,755 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 04:10:31" (1/1) ... [2025-03-16 16:10:31,768 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 16:10:31,913 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0920a.c[4007,4020] [2025-03-16 16:10:31,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 16:10:31,923 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 16:10:31,958 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0920a.c[4007,4020] [2025-03-16 16:10:31,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 16:10:31,974 INFO L204 MainTranslator]: Completed translation [2025-03-16 16:10:31,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:31 WrapperNode [2025-03-16 16:10:31,975 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 16:10:31,976 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 16:10:31,976 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 16:10:31,977 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 16:10:31,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:31" (1/1) ... [2025-03-16 16:10:31,991 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:31" (1/1) ... [2025-03-16 16:10:32,012 INFO L138 Inliner]: procedures = 19, calls = 33, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 223 [2025-03-16 16:10:32,015 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 16:10:32,016 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 16:10:32,016 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 16:10:32,016 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 16:10:32,022 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:31" (1/1) ... [2025-03-16 16:10:32,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:31" (1/1) ... [2025-03-16 16:10:32,024 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:31" (1/1) ... [2025-03-16 16:10:32,039 INFO L175 MemorySlicer]: Split 12 memory accesses to 5 slices as follows [2, 2, 2, 3, 3]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 5 writes are split as follows [0, 1, 1, 1, 2]. [2025-03-16 16:10:32,042 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:31" (1/1) ... [2025-03-16 16:10:32,043 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:31" (1/1) ... [2025-03-16 16:10:32,053 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:31" (1/1) ... [2025-03-16 16:10:32,057 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:31" (1/1) ... [2025-03-16 16:10:32,061 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:31" (1/1) ... [2025-03-16 16:10:32,062 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:31" (1/1) ... [2025-03-16 16:10:32,067 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 16:10:32,068 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 16:10:32,068 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 16:10:32,068 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 16:10:32,069 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:31" (1/1) ... [2025-03-16 16:10:32,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 16:10:32,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 16:10:32,090 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) [2025-03-16 16:10:32,092 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 [2025-03-16 16:10:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 16:10:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 16:10:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 16:10:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-16 16:10:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-16 16:10:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-16 16:10:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-16 16:10:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2025-03-16 16:10:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2025-03-16 16:10:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2025-03-16 16:10:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2025-03-16 16:10:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2025-03-16 16:10:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-16 16:10:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-16 16:10:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-16 16:10:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-16 16:10:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-16 16:10:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2025-03-16 16:10:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2025-03-16 16:10:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2025-03-16 16:10:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2025-03-16 16:10:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2025-03-16 16:10:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 16:10:32,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 16:10:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-16 16:10:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-16 16:10:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-16 16:10:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-16 16:10:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-16 16:10:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-16 16:10:32,186 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 16:10:32,187 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 16:10:32,402 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live. [2025-03-16 16:10:32,402 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 16:10:32,421 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 16:10:32,421 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 16:10:32,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 04:10:32 BoogieIcfgContainer [2025-03-16 16:10:32,421 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 16:10:32,423 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 16:10:32,423 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 16:10:32,426 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 16:10:32,426 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 04:10:31" (1/3) ... [2025-03-16 16:10:32,426 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618ec548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 04:10:32, skipping insertion in model container [2025-03-16 16:10:32,426 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:31" (2/3) ... [2025-03-16 16:10:32,427 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618ec548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 04:10:32, skipping insertion in model container [2025-03-16 16:10:32,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 04:10:32" (3/3) ... [2025-03-16 16:10:32,427 INFO L128 eAbstractionObserver]: Analyzing ICFG double_req_bl_0920a.c [2025-03-16 16:10:32,436 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 16:10:32,438 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG double_req_bl_0920a.c that has 1 procedures, 56 locations, 1 initial locations, 4 loop locations, and 5 error locations. [2025-03-16 16:10:32,475 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 16:10:32,484 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;@25a46cdd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 16:10:32,484 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-16 16:10:32,487 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 50 states have (on average 1.84) internal successors, (92), 55 states have internal predecessors, (92), 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) [2025-03-16 16:10:32,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-16 16:10:32,490 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 16:10:32,490 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-16 16:10:32,490 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONUNSUPPORTED_FEATURE, ULTIMATE.startErr2ASSERT_VIOLATIONUNSUPPORTED_FEATURE (and 2 more)] === [2025-03-16 16:10:32,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 16:10:32,494 INFO L85 PathProgramCache]: Analyzing trace with hash 146899, now seen corresponding path program 1 times [2025-03-16 16:10:32,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 16:10:32,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931676439] [2025-03-16 16:10:32,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 16:10:32,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 16:10:32,547 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-16 16:10:32,560 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-16 16:10:32,561 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 16:10:32,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-16 16:10:32,561 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-16 16:10:32,564 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-16 16:10:32,568 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-16 16:10:32,568 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 16:10:32,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-16 16:10:32,579 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-16 16:10:32,580 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-16 16:10:32,580 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONUNSUPPORTED_FEATURE (4 of 5 remaining) [2025-03-16 16:10:32,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-03-16 16:10:32,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONUNSUPPORTED_FEATURE (2 of 5 remaining) [2025-03-16 16:10:32,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONUNSUPPORTED_FEATURE (1 of 5 remaining) [2025-03-16 16:10:32,582 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONUNSUPPORTED_FEATURE (0 of 5 remaining) [2025-03-16 16:10:32,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 16:10:32,585 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-16 16:10:32,594 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-16 16:10:32,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.03 04:10:32 BoogieIcfgContainer [2025-03-16 16:10:32,596 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-16 16:10:32,597 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-16 16:10:32,597 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-16 16:10:32,597 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-16 16:10:32,597 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 04:10:32" (3/4) ... [2025-03-16 16:10:32,599 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-16 16:10:32,599 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-16 16:10:32,600 INFO L158 Benchmark]: Toolchain (without parser) took 849.58ms. Allocated memory is still 142.6MB. Free memory was 112.7MB in the beginning and 60.2MB in the end (delta: 52.5MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-03-16 16:10:32,600 INFO L158 Benchmark]: CDTParser took 0.67ms. Allocated memory is still 201.3MB. Free memory is still 122.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 16:10:32,600 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.74ms. Allocated memory is still 142.6MB. Free memory was 112.7MB in the beginning and 99.5MB in the end (delta: 13.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-16 16:10:32,600 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.19ms. Allocated memory is still 142.6MB. Free memory was 99.5MB in the beginning and 97.5MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-16 16:10:32,601 INFO L158 Benchmark]: Boogie Preprocessor took 51.21ms. Allocated memory is still 142.6MB. Free memory was 97.5MB in the beginning and 94.9MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 16:10:32,601 INFO L158 Benchmark]: IcfgBuilder took 353.90ms. Allocated memory is still 142.6MB. Free memory was 94.9MB in the beginning and 74.4MB in the end (delta: 20.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-16 16:10:32,601 INFO L158 Benchmark]: TraceAbstraction took 173.25ms. Allocated memory is still 142.6MB. Free memory was 73.9MB in the beginning and 60.2MB in the end (delta: 13.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-16 16:10:32,601 INFO L158 Benchmark]: Witness Printer took 2.64ms. Allocated memory is still 142.6MB. Free memory is still 60.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 16:10:32,602 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67ms. Allocated memory is still 201.3MB. Free memory is still 122.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 224.74ms. Allocated memory is still 142.6MB. Free memory was 112.7MB in the beginning and 99.5MB in the end (delta: 13.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.19ms. Allocated memory is still 142.6MB. Free memory was 99.5MB in the beginning and 97.5MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.21ms. Allocated memory is still 142.6MB. Free memory was 97.5MB in the beginning and 94.9MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 353.90ms. Allocated memory is still 142.6MB. Free memory was 94.9MB in the beginning and 74.4MB in the end (delta: 20.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 173.25ms. Allocated memory is still 142.6MB. Free memory was 73.9MB in the beginning and 60.2MB in the end (delta: 13.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 2.64ms. Allocated memory is still 142.6MB. Free memory is still 60.2MB. 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: 131]: Unable to prove that there are no unsupported features in the program Unable to prove that there are no unsupported features in the program Reason: overapproximation of union with floats in the HoenickeLindenmann_Original memory model at line 131, overapproximation of someBinaryDOUBLEComparisonOperation at line 150. Possible FailurePath: [L34-L43] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L45] static const double zero = 0.0; [L148] double x = __VERIFIER_nondet_double(); [L150] x < 0 && isfinite_double(x) VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L150] x < 0 && isfinite_double(x) [L150] CALL isfinite_double(x) [L129] __int32_t hx; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L131] ieee_double_shape_type gh_u; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] - UnprovableResult [Line: 156]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 79]: Unable to prove that there are no unsupported features in the program Unable to prove that there are no unsupported features in the program Reason: Not analyzed. - UnprovableResult [Line: 68]: Unable to prove that there are no unsupported features in the program Unable to prove that there are no unsupported features in the program Reason: Not analyzed. - UnprovableResult [Line: 53]: Unable to prove that there are no unsupported features in the program Unable to prove that there are no unsupported features in the program Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 56 locations, 92 edges, 5 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-16 16:10:32,614 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/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0920a.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 fdcf375e0f63a99aa336478d14a39a9f0916e41e4e2744057c95b8e96462ebe9 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 16:10:34,346 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 16:10:34,417 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-03-16 16:10:34,426 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 16:10:34,426 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 16:10:34,443 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 16:10:34,444 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 16:10:34,444 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 16:10:34,444 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 16:10:34,444 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 16:10:34,444 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 16:10:34,444 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 16:10:34,445 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 16:10:34,445 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 16:10:34,445 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 16:10:34,445 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 16:10:34,445 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 16:10:34,445 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 16:10:34,445 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 16:10:34,445 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 16:10:34,445 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 16:10:34,445 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 16:10:34,445 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 16:10:34,446 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-16 16:10:34,446 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-16 16:10:34,446 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-16 16:10:34,446 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 16:10:34,446 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 16:10:34,446 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 16:10:34,446 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 16:10:34,446 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 16:10:34,446 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 16:10:34,446 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 16:10:34,446 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 16:10:34,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 16:10:34,447 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 16:10:34,447 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 16:10:34,447 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 16:10:34,447 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 16:10:34,447 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-16 16:10:34,447 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-16 16:10:34,447 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 16:10:34,447 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 16:10:34,447 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 16:10:34,447 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 16:10:34,448 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> fdcf375e0f63a99aa336478d14a39a9f0916e41e4e2744057c95b8e96462ebe9 [2025-03-16 16:10:34,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 16:10:34,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 16:10:34,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 16:10:34,705 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 16:10:34,706 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 16:10:34,706 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0920a.c [2025-03-16 16:10:35,881 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8c878eac/7358dc817de74f9398ef2deaf23f7be3/FLAG7332277b5 [2025-03-16 16:10:36,070 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 16:10:36,071 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0920a.c [2025-03-16 16:10:36,076 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8c878eac/7358dc817de74f9398ef2deaf23f7be3/FLAG7332277b5 [2025-03-16 16:10:36,091 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8c878eac/7358dc817de74f9398ef2deaf23f7be3 [2025-03-16 16:10:36,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 16:10:36,095 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 16:10:36,096 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 16:10:36,096 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 16:10:36,100 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 16:10:36,101 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 04:10:36" (1/1) ... [2025-03-16 16:10:36,103 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@369de01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:36, skipping insertion in model container [2025-03-16 16:10:36,103 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 04:10:36" (1/1) ... [2025-03-16 16:10:36,121 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 16:10:36,262 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0920a.c[4007,4020] [2025-03-16 16:10:36,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 16:10:36,274 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 16:10:36,309 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0920a.c[4007,4020] [2025-03-16 16:10:36,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 16:10:36,328 INFO L204 MainTranslator]: Completed translation [2025-03-16 16:10:36,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:36 WrapperNode [2025-03-16 16:10:36,329 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 16:10:36,330 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 16:10:36,330 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 16:10:36,331 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 16:10:36,335 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:36" (1/1) ... [2025-03-16 16:10:36,348 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:36" (1/1) ... [2025-03-16 16:10:36,370 INFO L138 Inliner]: procedures = 22, calls = 33, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 171 [2025-03-16 16:10:36,374 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 16:10:36,375 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 16:10:36,376 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 16:10:36,376 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 16:10:36,382 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:36" (1/1) ... [2025-03-16 16:10:36,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:36" (1/1) ... [2025-03-16 16:10:36,384 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:36" (1/1) ... [2025-03-16 16:10:36,401 INFO L175 MemorySlicer]: Split 12 memory accesses to 5 slices as follows [2, 3, 2, 3, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 5 writes are split as follows [0, 2, 1, 1, 1]. [2025-03-16 16:10:36,402 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:36" (1/1) ... [2025-03-16 16:10:36,402 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:36" (1/1) ... [2025-03-16 16:10:36,412 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:36" (1/1) ... [2025-03-16 16:10:36,417 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:36" (1/1) ... [2025-03-16 16:10:36,419 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:36" (1/1) ... [2025-03-16 16:10:36,420 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:36" (1/1) ... [2025-03-16 16:10:36,426 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 16:10:36,427 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 16:10:36,427 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 16:10:36,427 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 16:10:36,428 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:36" (1/1) ... [2025-03-16 16:10:36,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 16:10:36,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 16:10:36,459 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) [2025-03-16 16:10:36,462 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 [2025-03-16 16:10:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 16:10:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2025-03-16 16:10:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2025-03-16 16:10:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2025-03-16 16:10:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2025-03-16 16:10:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#4 [2025-03-16 16:10:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2025-03-16 16:10:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2025-03-16 16:10:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2025-03-16 16:10:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2025-03-16 16:10:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#4 [2025-03-16 16:10:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-16 16:10:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-16 16:10:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-16 16:10:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2025-03-16 16:10:36,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2025-03-16 16:10:36,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-16 16:10:36,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-16 16:10:36,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-16 16:10:36,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-16 16:10:36,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2025-03-16 16:10:36,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2025-03-16 16:10:36,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 16:10:36,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 16:10:36,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-16 16:10:36,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-16 16:10:36,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-16 16:10:36,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2025-03-16 16:10:36,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2025-03-16 16:10:36,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-16 16:10:36,583 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 16:10:36,585 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 16:11:23,521 INFO L? ?]: Removed 60 outVars from TransFormulas that were not future-live. [2025-03-16 16:11:23,522 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 16:11:23,527 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 16:11:23,527 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 16:11:23,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 04:11:23 BoogieIcfgContainer [2025-03-16 16:11:23,528 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 16:11:23,529 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 16:11:23,529 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 16:11:23,536 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 16:11:23,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 04:10:36" (1/3) ... [2025-03-16 16:11:23,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6221fa85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 04:11:23, skipping insertion in model container [2025-03-16 16:11:23,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 04:10:36" (2/3) ... [2025-03-16 16:11:23,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6221fa85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 04:11:23, skipping insertion in model container [2025-03-16 16:11:23,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 04:11:23" (3/3) ... [2025-03-16 16:11:23,537 INFO L128 eAbstractionObserver]: Analyzing ICFG double_req_bl_0920a.c [2025-03-16 16:11:23,549 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 16:11:23,550 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG double_req_bl_0920a.c that has 1 procedures, 33 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-03-16 16:11:23,588 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 16:11:23,598 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;@f145f8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 16:11:23,599 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 16:11:23,602 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 32 states have internal predecessors, (54), 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) [2025-03-16 16:11:23,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-16 16:11:23,605 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 16:11:23,606 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 16:11:23,606 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 16:11:23,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 16:11:23,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1541103027, now seen corresponding path program 1 times [2025-03-16 16:11:23,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 16:11:23,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773254932] [2025-03-16 16:11:23,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 16:11:23,616 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 [2025-03-16 16:11:23,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-16 16:11:23,619 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) [2025-03-16 16:11:23,620 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 [2025-03-16 16:11:23,679 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-16 16:11:24,256 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-16 16:11:24,257 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 16:11:24,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 16:11:24,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-16 16:11:24,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 16:11:24,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 16:11:24,296 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 16:11:24,296 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-16 16:11:24,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773254932] [2025-03-16 16:11:24,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773254932] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 16:11:24,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 16:11:24,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 16:11:24,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982406020] [2025-03-16 16:11:24,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 16:11:24,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 16:11:24,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-16 16:11:24,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 16:11:24,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 16:11:24,315 INFO L87 Difference]: Start difference. First operand has 33 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 32 states have internal predecessors, (54), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 16:11:24,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 16:11:24,324 INFO L93 Difference]: Finished difference Result 64 states and 105 transitions. [2025-03-16 16:11:24,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 16:11:24,325 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-16 16:11:24,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 16:11:24,329 INFO L225 Difference]: With dead ends: 64 [2025-03-16 16:11:24,330 INFO L226 Difference]: Without dead ends: 29 [2025-03-16 16:11:24,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 16:11:24,333 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 16:11:24,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 16:11:24,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-03-16 16:11:24,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2025-03-16 16:11:24,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 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) [2025-03-16 16:11:24,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2025-03-16 16:11:24,358 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2025-03-16 16:11:24,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 16:11:24,359 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2025-03-16 16:11:24,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 16:11:24,360 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2025-03-16 16:11:24,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-16 16:11:24,360 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 16:11:24,360 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 16:11:24,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2025-03-16 16:11:24,561 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 [2025-03-16 16:11:24,562 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 16:11:24,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 16:11:24,562 INFO L85 PathProgramCache]: Analyzing trace with hash -436848113, now seen corresponding path program 1 times [2025-03-16 16:11:24,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 16:11:24,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981986070] [2025-03-16 16:11:24,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 16:11:24,563 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 [2025-03-16 16:11:24,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-16 16:11:24,565 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) [2025-03-16 16:11:24,566 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 [2025-03-16 16:11:24,629 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-16 16:11:25,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-16 16:11:25,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 16:11:25,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 16:11:25,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 16:11:25,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 16:11:25,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 16:11:25,499 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 16:11:25,499 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-16 16:11:25,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981986070] [2025-03-16 16:11:25,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981986070] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 16:11:25,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 16:11:25,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 16:11:25,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873064786] [2025-03-16 16:11:25,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 16:11:25,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 16:11:25,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-16 16:11:25,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 16:11:25,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 16:11:25,501 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2025-03-16 16:11:25,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 16:11:25,671 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2025-03-16 16:11:25,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 16:11:25,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 [2025-03-16 16:11:25,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 16:11:25,672 INFO L225 Difference]: With dead ends: 53 [2025-03-16 16:11:25,672 INFO L226 Difference]: Without dead ends: 29 [2025-03-16 16:11:25,672 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 16:11:25,672 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 16:11:25,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 16:11:25,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-03-16 16:11:25,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2025-03-16 16:11:25,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 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) [2025-03-16 16:11:25,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2025-03-16 16:11:25,679 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 11 [2025-03-16 16:11:25,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 16:11:25,679 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2025-03-16 16:11:25,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2025-03-16 16:11:25,679 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2025-03-16 16:11:25,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-16 16:11:25,679 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 16:11:25,680 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 16:11:25,697 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 [2025-03-16 16:11:25,880 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 [2025-03-16 16:11:25,880 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 16:11:25,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 16:11:25,881 INFO L85 PathProgramCache]: Analyzing trace with hash -410278871, now seen corresponding path program 1 times [2025-03-16 16:11:25,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 16:11:25,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811181713] [2025-03-16 16:11:25,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 16:11:25,881 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 [2025-03-16 16:11:25,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-16 16:11:25,884 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) [2025-03-16 16:11:25,884 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 [2025-03-16 16:11:25,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-16 16:11:26,631 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-16 16:11:26,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 16:11:26,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 16:11:26,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-16 16:11:26,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 16:11:30,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 16:11:30,238 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 16:11:30,238 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-16 16:11:30,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811181713] [2025-03-16 16:11:30,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [811181713] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 16:11:30,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 16:11:30,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 16:11:30,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606499813] [2025-03-16 16:11:30,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 16:11:30,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 16:11:30,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-16 16:11:30,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 16:11:30,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 16:11:30,240 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 16:11:35,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2025-03-16 16:11:37,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2025-03-16 16:11:41,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2025-03-16 16:11:48,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.96s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2025-03-16 16:11:48,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 16:11:48,207 INFO L93 Difference]: Finished difference Result 44 states and 61 transitions. [2025-03-16 16:11:48,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 16:11:48,582 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-03-16 16:11:48,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 16:11:48,583 INFO L225 Difference]: With dead ends: 44 [2025-03-16 16:11:48,583 INFO L226 Difference]: Without dead ends: 29 [2025-03-16 16:11:48,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-16 16:11:48,584 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 5 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2025-03-16 16:11:48,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 128 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 2 Unknown, 0 Unchecked, 17.4s Time] [2025-03-16 16:11:48,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-03-16 16:11:48,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2025-03-16 16:11:48,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 28 states have internal predecessors, (37), 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) [2025-03-16 16:11:48,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2025-03-16 16:11:48,586 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 14 [2025-03-16 16:11:48,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 16:11:48,586 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2025-03-16 16:11:48,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 16:11:48,587 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2025-03-16 16:11:48,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-03-16 16:11:48,587 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 16:11:48,587 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 16:11:48,605 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 [2025-03-16 16:11:48,787 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 [2025-03-16 16:11:48,788 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 16:11:48,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 16:11:48,788 INFO L85 PathProgramCache]: Analyzing trace with hash 168464341, now seen corresponding path program 1 times [2025-03-16 16:11:48,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-16 16:11:48,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686205226] [2025-03-16 16:11:48,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 16:11:48,789 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 [2025-03-16 16:11:48,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-16 16:11:48,791 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-03-16 16:11:48,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2025-03-16 16:11:48,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-16 16:11:49,645 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-16 16:11:49,645 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 16:11:49,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 16:11:49,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-16 16:11:49,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 16:11:52,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 16:11:52,927 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 16:11:52,927 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-16 16:11:52,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686205226] [2025-03-16 16:11:52,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686205226] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 16:11:52,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 16:11:52,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 16:11:52,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609824463] [2025-03-16 16:11:52,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 16:11:52,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 16:11:52,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-16 16:11:52,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 16:11:52,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 16:11:52,928 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 16:11:57,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.45s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-16 16:12:00,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2025-03-16 16:12:06,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.89s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-16 16:12:10,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2025-03-16 16:12:14,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-16 16:12:18,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.61s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers []