./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/busybox-1.22.0/printf-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/busybox-1.22.0/printf-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 64bit --witnessprinter.graph.data.programhash 7d17dd656752f8bfe37b555fca60e9904e2f2b89fd59148dbd3120bfaecc3203 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 20:36:41,769 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 20:36:41,823 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-01-09 20:36:41,829 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 20:36:41,829 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 20:36:41,852 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 20:36:41,853 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 20:36:41,853 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 20:36:41,854 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 20:36:41,854 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 20:36:41,854 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 20:36:41,854 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 20:36:41,855 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 20:36:41,855 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 20:36:41,855 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 20:36:41,855 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 20:36:41,855 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 20:36:41,855 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 20:36:41,856 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 20:36:41,856 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 20:36:41,856 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 20:36:41,856 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 20:36:41,856 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 20:36:41,856 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 20:36:41,856 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 20:36:41,856 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 20:36:41,856 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 20:36:41,856 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 20:36:41,857 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 20:36:41,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 20:36:41,857 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 20:36:41,857 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 20:36:41,857 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 20:36:41,857 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 20:36:41,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 20:36:41,858 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 20:36:41,858 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 20:36:41,858 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 20:36:41,858 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 20:36:41,858 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 20:36:41,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 20:36:41,858 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 20:36:41,858 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 20:36:41,858 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 20:36:41,858 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 20:36:41,858 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-jdk21/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d17dd656752f8bfe37b555fca60e9904e2f2b89fd59148dbd3120bfaecc3203 [2025-01-09 20:36:42,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 20:36:42,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 20:36:42,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 20:36:42,073 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 20:36:42,073 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 20:36:42,074 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/busybox-1.22.0/printf-2.i [2025-01-09 20:36:43,266 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/959bc9aad/a86a5f9aba38486abe38452ea299abc7/FLAG6098b0fe9 [2025-01-09 20:36:43,639 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 20:36:43,642 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i [2025-01-09 20:36:43,666 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/959bc9aad/a86a5f9aba38486abe38452ea299abc7/FLAG6098b0fe9 [2025-01-09 20:36:43,811 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/959bc9aad/a86a5f9aba38486abe38452ea299abc7 [2025-01-09 20:36:43,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 20:36:43,815 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 20:36:43,816 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 20:36:43,816 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 20:36:43,819 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 20:36:43,819 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 08:36:43" (1/1) ... [2025-01-09 20:36:43,820 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69d55b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:36:43, skipping insertion in model container [2025-01-09 20:36:43,820 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 08:36:43" (1/1) ... [2025-01-09 20:36:43,870 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 20:36:44,667 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[103699,103712] [2025-01-09 20:36:44,670 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[103875,103888] [2025-01-09 20:36:44,671 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104048,104061] [2025-01-09 20:36:44,671 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104259,104272] [2025-01-09 20:36:44,672 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104572,104585] [2025-01-09 20:36:44,676 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[106719,106732] [2025-01-09 20:36:44,683 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109080,109093] [2025-01-09 20:36:44,684 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109532,109545] [2025-01-09 20:36:44,685 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109885,109898] [2025-01-09 20:36:44,687 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[110424,110437] [2025-01-09 20:36:44,689 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[111343,111356] [2025-01-09 20:36:44,690 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[111696,111709] [2025-01-09 20:36:44,692 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[112237,112250] [2025-01-09 20:36:44,693 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[112970,112983] [2025-01-09 20:36:44,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 20:36:44,762 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 20:36:44,821 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[103699,103712] [2025-01-09 20:36:44,826 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[103875,103888] [2025-01-09 20:36:44,827 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104048,104061] [2025-01-09 20:36:44,827 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104259,104272] [2025-01-09 20:36:44,828 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[104572,104585] [2025-01-09 20:36:44,835 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[106719,106732] [2025-01-09 20:36:44,838 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109080,109093] [2025-01-09 20:36:44,839 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109532,109545] [2025-01-09 20:36:44,840 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[109885,109898] [2025-01-09 20:36:44,841 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[110424,110437] [2025-01-09 20:36:44,842 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[111343,111356] [2025-01-09 20:36:44,843 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[111696,111709] [2025-01-09 20:36:44,844 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[112237,112250] [2025-01-09 20:36:44,845 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/printf-2.i[112970,112983] [2025-01-09 20:36:44,867 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 20:36:44,986 WARN L1212 FunctionHandler]: The following functions are not defined or handled internally: vasprintf [2025-01-09 20:36:44,991 INFO L204 MainTranslator]: Completed translation [2025-01-09 20:36:44,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:36:44 WrapperNode [2025-01-09 20:36:44,992 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 20:36:44,992 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 20:36:44,993 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 20:36:44,993 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 20:36:44,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:36:44" (1/1) ... [2025-01-09 20:36:45,036 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:36:44" (1/1) ... [2025-01-09 20:36:45,129 INFO L138 Inliner]: procedures = 648, calls = 850, calls flagged for inlining = 31, calls inlined = 29, statements flattened = 1825 [2025-01-09 20:36:45,129 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 20:36:45,130 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 20:36:45,130 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 20:36:45,130 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 20:36:45,138 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:36:44" (1/1) ... [2025-01-09 20:36:45,139 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:36:44" (1/1) ... [2025-01-09 20:36:45,150 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:36:44" (1/1) ... [2025-01-09 20:36:45,160 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2025-01-09 20:36:45,160 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:36:44" (1/1) ... [2025-01-09 20:36:45,161 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:36:44" (1/1) ... [2025-01-09 20:36:45,214 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:36:44" (1/1) ... [2025-01-09 20:36:45,220 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:36:44" (1/1) ... [2025-01-09 20:36:45,232 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:36:44" (1/1) ... [2025-01-09 20:36:45,243 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:36:44" (1/1) ... [2025-01-09 20:36:45,246 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:36:44" (1/1) ... [2025-01-09 20:36:45,263 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 20:36:45,264 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 20:36:45,264 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 20:36:45,265 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 20:36:45,265 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:36:44" (1/1) ... [2025-01-09 20:36:45,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 20:36:45,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 20:36:45,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 20:36:45,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 20:36:45,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2025-01-09 20:36:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure bb_putchar [2025-01-09 20:36:45,316 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_putchar [2025-01-09 20:36:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 20:36:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2025-01-09 20:36:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure ret_ERANGE [2025-01-09 20:36:45,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ret_ERANGE [2025-01-09 20:36:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2025-01-09 20:36:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2025-01-09 20:36:45,316 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2025-01-09 20:36:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2025-01-09 20:36:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-01-09 20:36:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure get_width_prec [2025-01-09 20:36:45,316 INFO L138 BoogieDeclarations]: Found implementation of procedure get_width_prec [2025-01-09 20:36:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2025-01-09 20:36:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 20:36:45,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 20:36:45,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2025-01-09 20:36:45,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 20:36:45,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 20:36:45,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2025-01-09 20:36:45,317 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2025-01-09 20:36:45,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2025-01-09 20:36:45,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2025-01-09 20:36:45,317 INFO L130 BoogieDeclarations]: Found specification of procedure handle_errors [2025-01-09 20:36:45,317 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_errors [2025-01-09 20:36:45,317 INFO L130 BoogieDeclarations]: Found specification of procedure bb_process_escape_sequence [2025-01-09 20:36:45,317 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_process_escape_sequence [2025-01-09 20:36:45,317 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 20:36:45,317 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 20:36:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure print_direc [2025-01-09 20:36:45,318 INFO L138 BoogieDeclarations]: Found implementation of procedure print_direc [2025-01-09 20:36:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 20:36:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2025-01-09 20:36:45,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2025-01-09 20:36:45,319 INFO L130 BoogieDeclarations]: Found specification of procedure bb_ascii_isalnum [2025-01-09 20:36:45,319 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_ascii_isalnum [2025-01-09 20:36:45,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-01-09 20:36:45,319 INFO L130 BoogieDeclarations]: Found specification of procedure bb_strtoll [2025-01-09 20:36:45,319 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_strtoll [2025-01-09 20:36:45,319 INFO L130 BoogieDeclarations]: Found specification of procedure multiconvert [2025-01-09 20:36:45,319 INFO L138 BoogieDeclarations]: Found implementation of procedure multiconvert [2025-01-09 20:36:45,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2025-01-09 20:36:45,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-01-09 20:36:45,319 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg [2025-01-09 20:36:45,319 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg [2025-01-09 20:36:45,615 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 20:36:45,617 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 20:36:51,263 INFO L? ?]: Removed 570 outVars from TransFormulas that were not future-live. [2025-01-09 20:36:51,264 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 20:36:51,281 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 20:36:51,285 INFO L312 CfgBuilder]: Removed 14 assume(true) statements. [2025-01-09 20:36:51,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 08:36:51 BoogieIcfgContainer [2025-01-09 20:36:51,285 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 20:36:51,287 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 20:36:51,287 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 20:36:51,291 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 20:36:51,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 08:36:43" (1/3) ... [2025-01-09 20:36:51,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63834bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 08:36:51, skipping insertion in model container [2025-01-09 20:36:51,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 08:36:44" (2/3) ... [2025-01-09 20:36:51,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63834bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 08:36:51, skipping insertion in model container [2025-01-09 20:36:51,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 08:36:51" (3/3) ... [2025-01-09 20:36:51,295 INFO L128 eAbstractionObserver]: Analyzing ICFG printf-2.i [2025-01-09 20:36:51,306 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 20:36:51,307 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG printf-2.i that has 14 procedures, 416 locations, 1 initial locations, 23 loop locations, and 16 error locations. [2025-01-09 20:36:51,371 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 20:36:51,382 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;@6bf0200a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 20:36:51,382 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2025-01-09 20:36:51,390 INFO L276 IsEmpty]: Start isEmpty. Operand has 416 states, 348 states have (on average 1.5459770114942528) internal successors, (538), 365 states have internal predecessors, (538), 38 states have call successors, (38), 13 states have call predecessors, (38), 13 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2025-01-09 20:36:51,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-09 20:36:51,402 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:36:51,403 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 20:36:51,404 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting bb_verror_msgErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2025-01-09 20:36:51,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:36:51,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1008850589, now seen corresponding path program 1 times [2025-01-09 20:36:51,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:36:51,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549042431] [2025-01-09 20:36:51,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:36:51,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:36:52,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-09 20:36:52,235 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 20:36:52,235 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:36:52,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:36:52,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:36:52,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:36:52,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549042431] [2025-01-09 20:36:52,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549042431] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:36:52,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:36:52,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 20:36:52,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455065065] [2025-01-09 20:36:52,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:36:52,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 20:36:52,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:36:52,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 20:36:52,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 20:36:52,613 INFO L87 Difference]: Start difference. First operand has 416 states, 348 states have (on average 1.5459770114942528) internal successors, (538), 365 states have internal predecessors, (538), 38 states have call successors, (38), 13 states have call predecessors, (38), 13 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 20:36:52,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:36:52,671 INFO L93 Difference]: Finished difference Result 782 states and 1180 transitions. [2025-01-09 20:36:52,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 20:36:52,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2025-01-09 20:36:52,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:36:52,679 INFO L225 Difference]: With dead ends: 782 [2025-01-09 20:36:52,679 INFO L226 Difference]: Without dead ends: 359 [2025-01-09 20:36:52,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 20:36:52,691 INFO L435 NwaCegarLoop]: 508 mSDtfsCounter, 0 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 20:36:52,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1013 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 20:36:52,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2025-01-09 20:36:52,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2025-01-09 20:36:52,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 298 states have (on average 1.4395973154362416) internal successors, (429), 315 states have internal predecessors, (429), 34 states have call successors, (34), 12 states have call predecessors, (34), 12 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2025-01-09 20:36:52,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 495 transitions. [2025-01-09 20:36:52,737 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 495 transitions. Word has length 25 [2025-01-09 20:36:52,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:36:52,737 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 495 transitions. [2025-01-09 20:36:52,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 20:36:52,738 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 495 transitions. [2025-01-09 20:36:52,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-01-09 20:36:52,738 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:36:52,739 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 20:36:52,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 20:36:52,739 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting bb_verror_msgErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2025-01-09 20:36:52,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:36:52,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1622369928, now seen corresponding path program 1 times [2025-01-09 20:36:52,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:36:52,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862419648] [2025-01-09 20:36:52,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:36:52,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:36:53,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-01-09 20:36:53,329 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 20:36:53,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:36:53,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:36:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:36:53,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:36:53,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862419648] [2025-01-09 20:36:53,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862419648] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 20:36:53,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847924663] [2025-01-09 20:36:53,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:36:53,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 20:36:53,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 20:36:53,594 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 20:36:53,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 20:36:54,299 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-01-09 20:36:54,514 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 20:36:54,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:36:54,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:36:54,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 1909 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 20:36:54,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 20:36:54,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:36:54,566 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 20:36:54,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:36:54,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847924663] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 20:36:54,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 20:36:54,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-01-09 20:36:54,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658583189] [2025-01-09 20:36:54,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 20:36:54,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 20:36:54,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:36:54,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 20:36:54,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-09 20:36:54,622 INFO L87 Difference]: Start difference. First operand 359 states and 495 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 20:36:54,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:36:54,689 INFO L93 Difference]: Finished difference Result 717 states and 991 transitions. [2025-01-09 20:36:54,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 20:36:54,690 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2025-01-09 20:36:54,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:36:54,694 INFO L225 Difference]: With dead ends: 717 [2025-01-09 20:36:54,694 INFO L226 Difference]: Without dead ends: 362 [2025-01-09 20:36:54,695 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-09 20:36:54,696 INFO L435 NwaCegarLoop]: 493 mSDtfsCounter, 0 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 20:36:54,696 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1966 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 20:36:54,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2025-01-09 20:36:54,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2025-01-09 20:36:54,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 301 states have (on average 1.435215946843854) internal successors, (432), 318 states have internal predecessors, (432), 34 states have call successors, (34), 12 states have call predecessors, (34), 12 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2025-01-09 20:36:54,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 498 transitions. [2025-01-09 20:36:54,711 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 498 transitions. Word has length 26 [2025-01-09 20:36:54,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:36:54,711 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 498 transitions. [2025-01-09 20:36:54,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 20:36:54,711 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 498 transitions. [2025-01-09 20:36:54,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-01-09 20:36:54,712 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:36:54,712 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 20:36:54,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 20:36:54,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 20:36:54,913 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting bb_verror_msgErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2025-01-09 20:36:54,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:36:54,913 INFO L85 PathProgramCache]: Analyzing trace with hash -514103653, now seen corresponding path program 2 times [2025-01-09 20:36:54,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:36:54,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677377920] [2025-01-09 20:36:54,914 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 20:36:54,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:36:55,375 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-01-09 20:36:55,413 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 25 of 29 statements. [2025-01-09 20:36:55,413 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 20:36:55,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:36:55,770 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-09 20:36:55,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:36:55,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677377920] [2025-01-09 20:36:55,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677377920] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:36:55,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:36:55,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 20:36:55,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468538361] [2025-01-09 20:36:55,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:36:55,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 20:36:55,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:36:55,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 20:36:55,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 20:36:55,772 INFO L87 Difference]: Start difference. First operand 362 states and 498 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 20:36:55,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:36:55,884 INFO L93 Difference]: Finished difference Result 378 states and 513 transitions. [2025-01-09 20:36:55,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 20:36:55,885 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2025-01-09 20:36:55,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:36:55,887 INFO L225 Difference]: With dead ends: 378 [2025-01-09 20:36:55,887 INFO L226 Difference]: Without dead ends: 370 [2025-01-09 20:36:55,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-09 20:36:55,887 INFO L435 NwaCegarLoop]: 489 mSDtfsCounter, 17 mSDsluCounter, 1953 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2442 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 20:36:55,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2442 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 20:36:55,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2025-01-09 20:36:55,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 367. [2025-01-09 20:36:55,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 305 states have (on average 1.4295081967213115) internal successors, (436), 321 states have internal predecessors, (436), 35 states have call successors, (35), 14 states have call predecessors, (35), 12 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2025-01-09 20:36:55,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 503 transitions. [2025-01-09 20:36:55,906 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 503 transitions. Word has length 29 [2025-01-09 20:36:55,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:36:55,907 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 503 transitions. [2025-01-09 20:36:55,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 20:36:55,907 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 503 transitions. [2025-01-09 20:36:55,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-01-09 20:36:55,908 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:36:55,908 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 20:36:55,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 20:36:55,908 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting bb_verror_msgErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2025-01-09 20:36:55,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:36:55,909 INFO L85 PathProgramCache]: Analyzing trace with hash -514101731, now seen corresponding path program 1 times [2025-01-09 20:36:55,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:36:55,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757454780] [2025-01-09 20:36:55,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:36:55,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:36:56,451 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-09 20:36:56,493 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 20:36:56,494 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:36:56,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:36:56,888 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:36:56,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:36:56,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757454780] [2025-01-09 20:36:56,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757454780] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 20:36:56,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542379920] [2025-01-09 20:36:56,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:36:56,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 20:36:56,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 20:36:56,896 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 20:36:56,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 20:36:57,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-09 20:36:57,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-09 20:36:57,811 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:36:57,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:36:57,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 1965 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 20:36:57,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 20:36:57,899 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:36:57,902 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 20:36:58,107 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 20:36:58,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542379920] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 20:36:58,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 20:36:58,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-01-09 20:36:58,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910432958] [2025-01-09 20:36:58,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 20:36:58,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 20:36:58,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:36:58,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 20:36:58,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-01-09 20:36:58,109 INFO L87 Difference]: Start difference. First operand 367 states and 503 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 20:36:58,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:36:58,165 INFO L93 Difference]: Finished difference Result 733 states and 1010 transitions. [2025-01-09 20:36:58,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 20:36:58,169 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2025-01-09 20:36:58,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:36:58,171 INFO L225 Difference]: With dead ends: 733 [2025-01-09 20:36:58,171 INFO L226 Difference]: Without dead ends: 373 [2025-01-09 20:36:58,172 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-01-09 20:36:58,172 INFO L435 NwaCegarLoop]: 493 mSDtfsCounter, 0 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 20:36:58,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1966 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 20:36:58,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2025-01-09 20:36:58,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2025-01-09 20:36:58,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 311 states have (on average 1.4212218649517685) internal successors, (442), 327 states have internal predecessors, (442), 35 states have call successors, (35), 14 states have call predecessors, (35), 12 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2025-01-09 20:36:58,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 509 transitions. [2025-01-09 20:36:58,196 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 509 transitions. Word has length 29 [2025-01-09 20:36:58,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:36:58,196 INFO L471 AbstractCegarLoop]: Abstraction has 373 states and 509 transitions. [2025-01-09 20:36:58,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 20:36:58,199 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 509 transitions. [2025-01-09 20:36:58,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-01-09 20:36:58,200 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:36:58,200 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 20:36:58,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 20:36:58,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 20:36:58,401 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting bb_verror_msgErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2025-01-09 20:36:58,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:36:58,401 INFO L85 PathProgramCache]: Analyzing trace with hash 259684093, now seen corresponding path program 2 times [2025-01-09 20:36:58,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:36:58,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074200231] [2025-01-09 20:36:58,402 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 20:36:58,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:36:59,073 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-01-09 20:36:59,198 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 25 of 35 statements. [2025-01-09 20:36:59,198 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 20:36:59,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:36:59,566 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-01-09 20:36:59,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:36:59,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074200231] [2025-01-09 20:36:59,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074200231] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:36:59,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:36:59,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 20:36:59,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493372842] [2025-01-09 20:36:59,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:36:59,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 20:36:59,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:36:59,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 20:36:59,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-09 20:36:59,568 INFO L87 Difference]: Start difference. First operand 373 states and 509 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 20:36:59,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:36:59,717 INFO L93 Difference]: Finished difference Result 731 states and 1001 transitions. [2025-01-09 20:36:59,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 20:36:59,718 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2025-01-09 20:36:59,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:36:59,720 INFO L225 Difference]: With dead ends: 731 [2025-01-09 20:36:59,720 INFO L226 Difference]: Without dead ends: 375 [2025-01-09 20:36:59,721 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-09 20:36:59,722 INFO L435 NwaCegarLoop]: 486 mSDtfsCounter, 133 mSDsluCounter, 1789 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 2275 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 20:36:59,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 2275 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 20:36:59,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2025-01-09 20:36:59,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 374. [2025-01-09 20:36:59,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 312 states have (on average 1.419871794871795) internal successors, (443), 328 states have internal predecessors, (443), 35 states have call successors, (35), 14 states have call predecessors, (35), 12 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2025-01-09 20:36:59,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 510 transitions. [2025-01-09 20:36:59,733 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 510 transitions. Word has length 35 [2025-01-09 20:36:59,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:36:59,734 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 510 transitions. [2025-01-09 20:36:59,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 20:36:59,734 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 510 transitions. [2025-01-09 20:36:59,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-01-09 20:36:59,735 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:36:59,735 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 20:36:59,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 20:36:59,735 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting bb_verror_msgErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2025-01-09 20:36:59,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:36:59,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1635074461, now seen corresponding path program 1 times [2025-01-09 20:36:59,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:36:59,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884619092] [2025-01-09 20:36:59,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:36:59,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:37:00,308 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-01-09 20:37:00,336 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-01-09 20:37:00,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:37:00,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:37:00,487 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-01-09 20:37:00,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:37:00,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884619092] [2025-01-09 20:37:00,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884619092] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 20:37:00,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 20:37:00,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 20:37:00,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75575077] [2025-01-09 20:37:00,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 20:37:00,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 20:37:00,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:37:00,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 20:37:00,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 20:37:00,490 INFO L87 Difference]: Start difference. First operand 374 states and 510 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 20:37:00,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:37:00,517 INFO L93 Difference]: Finished difference Result 733 states and 1004 transitions. [2025-01-09 20:37:00,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 20:37:00,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2025-01-09 20:37:00,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:37:00,520 INFO L225 Difference]: With dead ends: 733 [2025-01-09 20:37:00,520 INFO L226 Difference]: Without dead ends: 375 [2025-01-09 20:37:00,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 20:37:00,521 INFO L435 NwaCegarLoop]: 493 mSDtfsCounter, 0 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 20:37:00,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 983 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 20:37:00,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2025-01-09 20:37:00,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2025-01-09 20:37:00,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 313 states have (on average 1.4185303514376997) internal successors, (444), 329 states have internal predecessors, (444), 35 states have call successors, (35), 14 states have call predecessors, (35), 12 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2025-01-09 20:37:00,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 511 transitions. [2025-01-09 20:37:00,536 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 511 transitions. Word has length 37 [2025-01-09 20:37:00,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:37:00,537 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 511 transitions. [2025-01-09 20:37:00,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 20:37:00,537 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 511 transitions. [2025-01-09 20:37:00,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-09 20:37:00,538 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:37:00,538 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 20:37:00,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 20:37:00,538 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting bb_verror_msgErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2025-01-09 20:37:00,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:37:00,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1566362438, now seen corresponding path program 1 times [2025-01-09 20:37:00,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:37:00,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576459019] [2025-01-09 20:37:00,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:37:00,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:37:00,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-09 20:37:00,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 20:37:00,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:37:00,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:37:01,185 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-01-09 20:37:01,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:37:01,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576459019] [2025-01-09 20:37:01,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576459019] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 20:37:01,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424818667] [2025-01-09 20:37:01,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 20:37:01,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 20:37:01,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 20:37:01,190 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 20:37:01,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 20:37:01,977 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-09 20:37:02,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 20:37:02,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 20:37:02,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:37:02,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 2176 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 20:37:02,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 20:37:02,219 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-01-09 20:37:02,220 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 20:37:02,273 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-01-09 20:37:02,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424818667] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 20:37:02,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 20:37:02,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-01-09 20:37:02,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529128060] [2025-01-09 20:37:02,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 20:37:02,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 20:37:02,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 20:37:02,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 20:37:02,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-09 20:37:02,276 INFO L87 Difference]: Start difference. First operand 375 states and 511 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 20:37:02,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 20:37:02,321 INFO L93 Difference]: Finished difference Result 737 states and 1010 transitions. [2025-01-09 20:37:02,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 20:37:02,322 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2025-01-09 20:37:02,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 20:37:02,324 INFO L225 Difference]: With dead ends: 737 [2025-01-09 20:37:02,324 INFO L226 Difference]: Without dead ends: 378 [2025-01-09 20:37:02,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-09 20:37:02,325 INFO L435 NwaCegarLoop]: 493 mSDtfsCounter, 0 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 20:37:02,325 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1473 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 20:37:02,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2025-01-09 20:37:02,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2025-01-09 20:37:02,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 316 states have (on average 1.4145569620253164) internal successors, (447), 332 states have internal predecessors, (447), 35 states have call successors, (35), 14 states have call predecessors, (35), 12 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2025-01-09 20:37:02,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 514 transitions. [2025-01-09 20:37:02,335 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 514 transitions. Word has length 38 [2025-01-09 20:37:02,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 20:37:02,335 INFO L471 AbstractCegarLoop]: Abstraction has 378 states and 514 transitions. [2025-01-09 20:37:02,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-09 20:37:02,336 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 514 transitions. [2025-01-09 20:37:02,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-01-09 20:37:02,336 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 20:37:02,336 INFO L218 NwaCegarLoop]: trace histogram [10, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 20:37:02,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-09 20:37:02,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 20:37:02,541 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting bb_verror_msgErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [multiconvertErr0ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr1ASSERT_VIOLATIONERROR_FUNCTION, multiconvertErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2025-01-09 20:37:02,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 20:37:02,542 INFO L85 PathProgramCache]: Analyzing trace with hash 471931939, now seen corresponding path program 2 times [2025-01-09 20:37:02,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 20:37:02,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284882752] [2025-01-09 20:37:02,542 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 20:37:02,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 20:37:02,946 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 41 statements into 2 equivalence classes. [2025-01-09 20:37:03,254 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 41 of 41 statements. [2025-01-09 20:37:03,254 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 20:37:03,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 20:37:03,569 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-01-09 20:37:03,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 20:37:03,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284882752] [2025-01-09 20:37:03,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284882752] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 20:37:03,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494677680] [2025-01-09 20:37:03,570 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 20:37:03,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 20:37:03,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 20:37:03,575 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 20:37:03,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 20:37:04,340 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 41 statements into 2 equivalence classes.