./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d 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/uthash-2.0.2/uthash_JEN_test7-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash 1f8d40fc3d39b827c494ff373d43bd116589a8fd89c6e972621bd6e0216b2f6d --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 04:55:07,201 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 04:55:07,237 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 04:55:07,240 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 04:55:07,241 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 04:55:07,257 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 04:55:07,257 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 04:55:07,258 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 04:55:07,258 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 04:55:07,258 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 04:55:07,258 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 04:55:07,258 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 04:55:07,258 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 04:55:07,259 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 04:55:07,259 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 04:55:07,259 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 04:55:07,259 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 04:55:07,259 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 04:55:07,259 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 04:55:07,259 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 04:55:07,259 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 04:55:07,260 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 04:55:07,260 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 04:55:07,260 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 04:55:07,260 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 04:55:07,260 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 04:55:07,260 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 04:55:07,260 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 04:55:07,260 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 04:55:07,260 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 04:55:07,260 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 04:55:07,261 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 04:55:07,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 04:55:07,261 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 04:55:07,261 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 04:55:07,261 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 04:55:07,261 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 04:55:07,261 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 04:55:07,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 04:55:07,262 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 04:55:07,262 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 04:55:07,262 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 04:55:07,262 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 04:55:07,262 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f8d40fc3d39b827c494ff373d43bd116589a8fd89c6e972621bd6e0216b2f6d [2025-02-08 04:55:07,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 04:55:07,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 04:55:07,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 04:55:07,501 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 04:55:07,501 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 04:55:07,502 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i [2025-02-08 04:55:08,606 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/79796099a/5855638b9f9b46a1bbd0cdbcb84d757e/FLAG680582db8 [2025-02-08 04:55:08,946 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 04:55:08,946 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i [2025-02-08 04:55:08,966 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/79796099a/5855638b9f9b46a1bbd0cdbcb84d757e/FLAG680582db8 [2025-02-08 04:55:09,190 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/79796099a/5855638b9f9b46a1bbd0cdbcb84d757e [2025-02-08 04:55:09,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 04:55:09,194 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 04:55:09,196 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 04:55:09,196 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 04:55:09,198 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 04:55:09,199 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 04:55:09" (1/1) ... [2025-02-08 04:55:09,200 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c7c3dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:55:09, skipping insertion in model container [2025-02-08 04:55:09,201 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 04:55:09" (1/1) ... [2025-02-08 04:55:09,239 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 04:55:09,501 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/uthash-2.0.2/uthash_JEN_test7-2.i[33021,33034] [2025-02-08 04:55:09,562 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/uthash-2.0.2/uthash_JEN_test7-2.i[44124,44137] [2025-02-08 04:55:09,563 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/uthash-2.0.2/uthash_JEN_test7-2.i[44245,44258] [2025-02-08 04:55:09,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 04:55:09,587 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 04:55:09,617 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/uthash-2.0.2/uthash_JEN_test7-2.i[33021,33034] [2025-02-08 04:55:09,678 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/uthash-2.0.2/uthash_JEN_test7-2.i[44124,44137] [2025-02-08 04:55:09,678 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/uthash-2.0.2/uthash_JEN_test7-2.i[44245,44258] [2025-02-08 04:55:09,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 04:55:09,707 INFO L204 MainTranslator]: Completed translation [2025-02-08 04:55:09,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:55:09 WrapperNode [2025-02-08 04:55:09,708 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 04:55:09,708 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 04:55:09,708 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 04:55:09,709 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 04:55:09,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:55:09" (1/1) ... [2025-02-08 04:55:09,728 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:55:09" (1/1) ... [2025-02-08 04:55:09,773 INFO L138 Inliner]: procedures = 176, calls = 320, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1537 [2025-02-08 04:55:09,773 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 04:55:09,774 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 04:55:09,774 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 04:55:09,774 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 04:55:09,780 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:55:09" (1/1) ... [2025-02-08 04:55:09,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:55:09" (1/1) ... [2025-02-08 04:55:09,788 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:55:09" (1/1) ... [2025-02-08 04:55:09,854 INFO L175 MemorySlicer]: Split 301 memory accesses to 3 slices as follows [2, 265, 34]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 58, 4]. [2025-02-08 04:55:09,855 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:55:09" (1/1) ... [2025-02-08 04:55:09,859 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:55:09" (1/1) ... [2025-02-08 04:55:09,901 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:55:09" (1/1) ... [2025-02-08 04:55:09,906 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:55:09" (1/1) ... [2025-02-08 04:55:09,913 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:55:09" (1/1) ... [2025-02-08 04:55:09,918 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:55:09" (1/1) ... [2025-02-08 04:55:09,928 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 04:55:09,929 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 04:55:09,929 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 04:55:09,929 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 04:55:09,929 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:55:09" (1/1) ... [2025-02-08 04:55:09,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 04:55:09,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:55:09,958 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) [2025-02-08 04:55:09,965 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 [2025-02-08 04:55:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 04:55:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 04:55:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 04:55:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 04:55:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 04:55:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 04:55:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-08 04:55:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-08 04:55:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-08 04:55:09,993 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-08 04:55:09,994 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-08 04:55:09,994 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-08 04:55:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 04:55:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 04:55:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 04:55:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 04:55:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 04:55:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 04:55:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 04:55:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 04:55:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 04:55:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 04:55:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 04:55:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 04:55:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 04:55:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 04:55:09,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 04:55:10,179 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 04:55:10,181 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 04:55:11,301 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L713: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-02-08 04:55:11,364 INFO L? ?]: Removed 333 outVars from TransFormulas that were not future-live. [2025-02-08 04:55:11,364 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 04:55:11,398 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 04:55:11,399 INFO L337 CfgBuilder]: Removed 1 assume(true) statements. [2025-02-08 04:55:11,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 04:55:11 BoogieIcfgContainer [2025-02-08 04:55:11,399 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 04:55:11,401 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 04:55:11,401 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 04:55:11,404 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 04:55:11,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 04:55:09" (1/3) ... [2025-02-08 04:55:11,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@678e3021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 04:55:11, skipping insertion in model container [2025-02-08 04:55:11,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:55:09" (2/3) ... [2025-02-08 04:55:11,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@678e3021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 04:55:11, skipping insertion in model container [2025-02-08 04:55:11,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 04:55:11" (3/3) ... [2025-02-08 04:55:11,406 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test7-2.i [2025-02-08 04:55:11,416 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 04:55:11,418 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_test7-2.i that has 4 procedures, 431 locations, 1 initial locations, 43 loop locations, and 2 error locations. [2025-02-08 04:55:11,460 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 04:55:11,468 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;@11b17ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 04:55:11,468 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-08 04:55:11,473 INFO L276 IsEmpty]: Start isEmpty. Operand has 423 states, 416 states have (on average 1.6225961538461537) internal successors, (675), 418 states have internal predecessors, (675), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 04:55:11,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 04:55:11,476 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:55:11,477 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:55:11,477 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:55:11,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:55:11,481 INFO L85 PathProgramCache]: Analyzing trace with hash -692763222, now seen corresponding path program 1 times [2025-02-08 04:55:11,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:55:11,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343947126] [2025-02-08 04:55:11,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:55:11,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:55:11,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 04:55:11,547 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 04:55:11,547 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:55:11,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:55:11,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 04:55:11,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:55:11,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343947126] [2025-02-08 04:55:11,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343947126] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:55:11,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:55:11,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 04:55:11,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217986730] [2025-02-08 04:55:11,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:55:11,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 04:55:11,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:55:11,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 04:55:11,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 04:55:11,599 INFO L87 Difference]: Start difference. First operand has 423 states, 416 states have (on average 1.6225961538461537) internal successors, (675), 418 states have internal predecessors, (675), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 04:55:11,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:55:11,719 INFO L93 Difference]: Finished difference Result 845 states and 1361 transitions. [2025-02-08 04:55:11,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 04:55:11,721 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-08 04:55:11,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:55:11,728 INFO L225 Difference]: With dead ends: 845 [2025-02-08 04:55:11,729 INFO L226 Difference]: Without dead ends: 387 [2025-02-08 04:55:11,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 04:55:11,736 INFO L435 NwaCegarLoop]: 566 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 04:55:11,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 566 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 04:55:11,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2025-02-08 04:55:11,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2025-02-08 04:55:11,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 381 states have (on average 1.4540682414698163) internal successors, (554), 382 states have internal predecessors, (554), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 04:55:11,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 560 transitions. [2025-02-08 04:55:11,788 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 560 transitions. Word has length 7 [2025-02-08 04:55:11,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:55:11,789 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 560 transitions. [2025-02-08 04:55:11,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 04:55:11,789 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 560 transitions. [2025-02-08 04:55:11,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-08 04:55:11,790 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:55:11,790 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:55:11,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 04:55:11,790 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:55:11,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:55:11,791 INFO L85 PathProgramCache]: Analyzing trace with hash 2046307096, now seen corresponding path program 1 times [2025-02-08 04:55:11,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:55:11,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490514918] [2025-02-08 04:55:11,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:55:11,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:55:11,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 04:55:11,821 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 04:55:11,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:55:11,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:55:11,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 04:55:11,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:55:11,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490514918] [2025-02-08 04:55:11,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490514918] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:55:11,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:55:11,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 04:55:11,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007339974] [2025-02-08 04:55:11,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:55:11,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 04:55:11,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:55:11,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 04:55:11,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 04:55:11,937 INFO L87 Difference]: Start difference. First operand 387 states and 560 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 04:55:12,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:55:12,155 INFO L93 Difference]: Finished difference Result 957 states and 1388 transitions. [2025-02-08 04:55:12,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 04:55:12,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-08 04:55:12,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:55:12,162 INFO L225 Difference]: With dead ends: 957 [2025-02-08 04:55:12,162 INFO L226 Difference]: Without dead ends: 768 [2025-02-08 04:55:12,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 04:55:12,163 INFO L435 NwaCegarLoop]: 499 mSDtfsCounter, 545 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 04:55:12,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 1491 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 04:55:12,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2025-02-08 04:55:12,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 389. [2025-02-08 04:55:12,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 383 states have (on average 1.4516971279373367) internal successors, (556), 384 states have internal predecessors, (556), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 04:55:12,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 562 transitions. [2025-02-08 04:55:12,192 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 562 transitions. Word has length 9 [2025-02-08 04:55:12,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:55:12,192 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 562 transitions. [2025-02-08 04:55:12,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 04:55:12,193 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 562 transitions. [2025-02-08 04:55:12,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-02-08 04:55:12,195 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:55:12,195 INFO L218 NwaCegarLoop]: trace histogram [2, 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, 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, 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] [2025-02-08 04:55:12,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 04:55:12,196 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:55:12,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:55:12,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1765994817, now seen corresponding path program 1 times [2025-02-08 04:55:12,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:55:12,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362629166] [2025-02-08 04:55:12,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:55:12,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:55:12,231 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-02-08 04:55:12,241 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-02-08 04:55:12,242 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:55:12,242 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:55:12,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 04:55:12,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:55:12,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362629166] [2025-02-08 04:55:12,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362629166] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:55:12,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:55:12,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 04:55:12,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298929256] [2025-02-08 04:55:12,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:55:12,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 04:55:12,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:55:12,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 04:55:12,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 04:55:12,566 INFO L87 Difference]: Start difference. First operand 389 states and 562 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 04:55:12,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:55:12,702 INFO L93 Difference]: Finished difference Result 733 states and 1055 transitions. [2025-02-08 04:55:12,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 04:55:12,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2025-02-08 04:55:12,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:55:12,704 INFO L225 Difference]: With dead ends: 733 [2025-02-08 04:55:12,704 INFO L226 Difference]: Without dead ends: 347 [2025-02-08 04:55:12,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 04:55:12,705 INFO L435 NwaCegarLoop]: 423 mSDtfsCounter, 36 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 04:55:12,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1255 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 04:55:12,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2025-02-08 04:55:12,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2025-02-08 04:55:12,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 341 states have (on average 1.404692082111437) internal successors, (479), 342 states have internal predecessors, (479), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 04:55:12,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 485 transitions. [2025-02-08 04:55:12,720 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 485 transitions. Word has length 84 [2025-02-08 04:55:12,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:55:12,721 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 485 transitions. [2025-02-08 04:55:12,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 04:55:12,721 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 485 transitions. [2025-02-08 04:55:12,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-02-08 04:55:12,724 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:55:12,724 INFO L218 NwaCegarLoop]: trace histogram [2, 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, 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, 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] [2025-02-08 04:55:12,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 04:55:12,724 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:55:12,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:55:12,725 INFO L85 PathProgramCache]: Analyzing trace with hash -492632503, now seen corresponding path program 1 times [2025-02-08 04:55:12,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:55:12,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479013239] [2025-02-08 04:55:12,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:55:12,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:55:12,764 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-02-08 04:55:12,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-02-08 04:55:12,777 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:55:12,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:55:12,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 04:55:12,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:55:12,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479013239] [2025-02-08 04:55:12,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479013239] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:55:12,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:55:12,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 04:55:12,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078757892] [2025-02-08 04:55:12,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:55:12,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 04:55:12,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:55:12,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 04:55:12,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 04:55:12,911 INFO L87 Difference]: Start difference. First operand 347 states and 485 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 04:55:13,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:55:13,085 INFO L93 Difference]: Finished difference Result 685 states and 961 transitions. [2025-02-08 04:55:13,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 04:55:13,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2025-02-08 04:55:13,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:55:13,088 INFO L225 Difference]: With dead ends: 685 [2025-02-08 04:55:13,088 INFO L226 Difference]: Without dead ends: 341 [2025-02-08 04:55:13,088 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 04:55:13,089 INFO L435 NwaCegarLoop]: 425 mSDtfsCounter, 9 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 04:55:13,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1256 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 04:55:13,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2025-02-08 04:55:13,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2025-02-08 04:55:13,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 335 states have (on average 1.4) internal successors, (469), 336 states have internal predecessors, (469), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 04:55:13,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 475 transitions. [2025-02-08 04:55:13,099 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 475 transitions. Word has length 84 [2025-02-08 04:55:13,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:55:13,099 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 475 transitions. [2025-02-08 04:55:13,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 04:55:13,100 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 475 transitions. [2025-02-08 04:55:13,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-02-08 04:55:13,101 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:55:13,101 INFO L218 NwaCegarLoop]: trace histogram [2, 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, 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, 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] [2025-02-08 04:55:13,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 04:55:13,101 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:55:13,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:55:13,102 INFO L85 PathProgramCache]: Analyzing trace with hash -930137403, now seen corresponding path program 1 times [2025-02-08 04:55:13,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:55:13,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775848234] [2025-02-08 04:55:13,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:55:13,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:55:13,132 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-02-08 04:55:13,152 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-02-08 04:55:13,152 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:55:13,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:55:13,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 04:55:13,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:55:13,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775848234] [2025-02-08 04:55:13,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775848234] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:55:13,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:55:13,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 04:55:13,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863757395] [2025-02-08 04:55:13,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:55:13,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 04:55:13,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:55:13,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 04:55:13,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 04:55:13,263 INFO L87 Difference]: Start difference. First operand 341 states and 475 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 04:55:13,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:55:13,398 INFO L93 Difference]: Finished difference Result 925 states and 1298 transitions. [2025-02-08 04:55:13,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 04:55:13,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2025-02-08 04:55:13,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:55:13,401 INFO L225 Difference]: With dead ends: 925 [2025-02-08 04:55:13,401 INFO L226 Difference]: Without dead ends: 587 [2025-02-08 04:55:13,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 04:55:13,402 INFO L435 NwaCegarLoop]: 609 mSDtfsCounter, 293 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 04:55:13,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 1025 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 04:55:13,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2025-02-08 04:55:13,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 580. [2025-02-08 04:55:13,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 574 states have (on average 1.416376306620209) internal successors, (813), 575 states have internal predecessors, (813), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 04:55:13,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 819 transitions. [2025-02-08 04:55:13,416 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 819 transitions. Word has length 84 [2025-02-08 04:55:13,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:55:13,416 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 819 transitions. [2025-02-08 04:55:13,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 04:55:13,416 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 819 transitions. [2025-02-08 04:55:13,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-02-08 04:55:13,417 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:55:13,417 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:55:13,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 04:55:13,418 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:55:13,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:55:13,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1705524552, now seen corresponding path program 1 times [2025-02-08 04:55:13,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:55:13,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521509668] [2025-02-08 04:55:13,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:55:13,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:55:13,453 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-02-08 04:55:13,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-02-08 04:55:13,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:55:13,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:55:13,742 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 04:55:13,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:55:13,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521509668] [2025-02-08 04:55:13,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521509668] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:55:13,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:55:13,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 04:55:13,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392146061] [2025-02-08 04:55:13,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:55:13,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 04:55:13,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:55:13,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 04:55:13,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 04:55:13,746 INFO L87 Difference]: Start difference. First operand 580 states and 819 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:55:13,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:55:13,903 INFO L93 Difference]: Finished difference Result 860 states and 1215 transitions. [2025-02-08 04:55:13,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 04:55:13,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 99 [2025-02-08 04:55:13,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:55:13,907 INFO L225 Difference]: With dead ends: 860 [2025-02-08 04:55:13,907 INFO L226 Difference]: Without dead ends: 856 [2025-02-08 04:55:13,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 04:55:13,908 INFO L435 NwaCegarLoop]: 460 mSDtfsCounter, 451 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 04:55:13,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 1335 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 04:55:13,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2025-02-08 04:55:13,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 582. [2025-02-08 04:55:13,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 576 states have (on average 1.4149305555555556) internal successors, (815), 577 states have internal predecessors, (815), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 04:55:13,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 821 transitions. [2025-02-08 04:55:13,934 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 821 transitions. Word has length 99 [2025-02-08 04:55:13,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:55:13,935 INFO L471 AbstractCegarLoop]: Abstraction has 582 states and 821 transitions. [2025-02-08 04:55:13,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:55:13,935 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 821 transitions. [2025-02-08 04:55:13,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-02-08 04:55:13,939 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:55:13,939 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1] [2025-02-08 04:55:13,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 04:55:13,939 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:55:13,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:55:13,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1655969729, now seen corresponding path program 1 times [2025-02-08 04:55:13,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:55:13,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781217969] [2025-02-08 04:55:13,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:55:13,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:55:13,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-02-08 04:55:14,015 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-02-08 04:55:14,015 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:55:14,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:55:14,178 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 04:55:14,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:55:14,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781217969] [2025-02-08 04:55:14,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781217969] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:55:14,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:55:14,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 04:55:14,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679087723] [2025-02-08 04:55:14,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:55:14,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 04:55:14,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:55:14,181 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 04:55:14,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 04:55:14,182 INFO L87 Difference]: Start difference. First operand 582 states and 821 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:55:14,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:55:14,283 INFO L93 Difference]: Finished difference Result 845 states and 1199 transitions. [2025-02-08 04:55:14,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 04:55:14,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 152 [2025-02-08 04:55:14,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:55:14,286 INFO L225 Difference]: With dead ends: 845 [2025-02-08 04:55:14,286 INFO L226 Difference]: Without dead ends: 498 [2025-02-08 04:55:14,286 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 04:55:14,287 INFO L435 NwaCegarLoop]: 348 mSDtfsCounter, 30 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 04:55:14,287 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1025 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 04:55:14,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2025-02-08 04:55:14,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 498. [2025-02-08 04:55:14,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 492 states have (on average 1.3434959349593496) internal successors, (661), 493 states have internal predecessors, (661), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 04:55:14,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 667 transitions. [2025-02-08 04:55:14,297 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 667 transitions. Word has length 152 [2025-02-08 04:55:14,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:55:14,298 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 667 transitions. [2025-02-08 04:55:14,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:55:14,298 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 667 transitions. [2025-02-08 04:55:14,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-02-08 04:55:14,299 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:55:14,299 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1] [2025-02-08 04:55:14,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 04:55:14,300 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:55:14,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:55:14,300 INFO L85 PathProgramCache]: Analyzing trace with hash -579827333, now seen corresponding path program 1 times [2025-02-08 04:55:14,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:55:14,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126486621] [2025-02-08 04:55:14,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:55:14,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:55:14,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-02-08 04:55:14,354 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-02-08 04:55:14,354 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:55:14,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:55:14,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:55:14,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:55:14,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126486621] [2025-02-08 04:55:14,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126486621] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:55:14,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:55:14,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 04:55:14,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491468862] [2025-02-08 04:55:14,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:55:14,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 04:55:14,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:55:14,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 04:55:14,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 04:55:14,470 INFO L87 Difference]: Start difference. First operand 498 states and 667 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:55:14,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:55:14,692 INFO L93 Difference]: Finished difference Result 1058 states and 1419 transitions. [2025-02-08 04:55:14,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 04:55:14,692 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 152 [2025-02-08 04:55:14,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:55:14,694 INFO L225 Difference]: With dead ends: 1058 [2025-02-08 04:55:14,695 INFO L226 Difference]: Without dead ends: 643 [2025-02-08 04:55:14,695 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 04:55:14,696 INFO L435 NwaCegarLoop]: 422 mSDtfsCounter, 790 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 04:55:14,696 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 701 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 04:55:14,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2025-02-08 04:55:14,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 636. [2025-02-08 04:55:14,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 630 states have (on average 1.3476190476190477) internal successors, (849), 631 states have internal predecessors, (849), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 04:55:14,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 855 transitions. [2025-02-08 04:55:14,728 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 855 transitions. Word has length 152 [2025-02-08 04:55:14,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:55:14,729 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 855 transitions. [2025-02-08 04:55:14,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:55:14,729 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 855 transitions. [2025-02-08 04:55:14,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2025-02-08 04:55:14,730 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:55:14,730 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:55:14,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 04:55:14,730 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:55:14,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:55:14,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1710531789, now seen corresponding path program 1 times [2025-02-08 04:55:14,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:55:14,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795737160] [2025-02-08 04:55:14,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:55:14,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:55:14,773 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-02-08 04:55:14,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-02-08 04:55:14,812 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:55:14,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:55:15,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:55:15,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:55:15,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795737160] [2025-02-08 04:55:15,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795737160] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:55:15,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904059178] [2025-02-08 04:55:15,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:55:15,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:55:15,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:55:15,349 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) [2025-02-08 04:55:15,353 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 [2025-02-08 04:55:15,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-02-08 04:55:15,680 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-02-08 04:55:15,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:55:15,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:55:15,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 04:55:15,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:55:15,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 04:55:15,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:55:15,936 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:55:15,936 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 04:55:16,092 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:55:16,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904059178] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 04:55:16,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 04:55:16,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2025-02-08 04:55:16,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137646599] [2025-02-08 04:55:16,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 04:55:16,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 04:55:16,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:55:16,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 04:55:16,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2025-02-08 04:55:16,095 INFO L87 Difference]: Start difference. First operand 636 states and 855 transitions. Second operand has 12 states, 12 states have (on average 26.833333333333332) internal successors, (322), 12 states have internal predecessors, (322), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-08 04:55:16,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:55:16,627 INFO L93 Difference]: Finished difference Result 2872 states and 3878 transitions. [2025-02-08 04:55:16,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 04:55:16,628 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 26.833333333333332) internal successors, (322), 12 states have internal predecessors, (322), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 162 [2025-02-08 04:55:16,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:55:16,637 INFO L225 Difference]: With dead ends: 2872 [2025-02-08 04:55:16,637 INFO L226 Difference]: Without dead ends: 2468 [2025-02-08 04:55:16,638 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 316 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2025-02-08 04:55:16,640 INFO L435 NwaCegarLoop]: 680 mSDtfsCounter, 1319 mSDsluCounter, 4107 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 4787 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 04:55:16,640 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1323 Valid, 4787 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 04:55:16,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2468 states. [2025-02-08 04:55:16,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2468 to 966. [2025-02-08 04:55:16,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 956 states have (on average 1.3399581589958158) internal successors, (1281), 957 states have internal predecessors, (1281), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 04:55:16,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1293 transitions. [2025-02-08 04:55:16,686 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1293 transitions. Word has length 162 [2025-02-08 04:55:16,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:55:16,686 INFO L471 AbstractCegarLoop]: Abstraction has 966 states and 1293 transitions. [2025-02-08 04:55:16,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.833333333333332) internal successors, (322), 12 states have internal predecessors, (322), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-08 04:55:16,687 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1293 transitions. [2025-02-08 04:55:16,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2025-02-08 04:55:16,690 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:55:16,690 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 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, 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, 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] [2025-02-08 04:55:16,703 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 [2025-02-08 04:55:16,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:55:16,892 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:55:16,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:55:16,892 INFO L85 PathProgramCache]: Analyzing trace with hash -306204736, now seen corresponding path program 1 times [2025-02-08 04:55:16,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:55:16,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503706769] [2025-02-08 04:55:16,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:55:16,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:55:16,994 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 387 statements into 1 equivalence classes. [2025-02-08 04:55:17,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 387 of 387 statements. [2025-02-08 04:55:17,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:55:17,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:55:19,323 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:55:19,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:55:19,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503706769] [2025-02-08 04:55:19,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503706769] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:55:19,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931519044] [2025-02-08 04:55:19,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:55:19,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:55:19,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:55:19,327 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) [2025-02-08 04:55:19,329 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 [2025-02-08 04:55:19,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 387 statements into 1 equivalence classes. [2025-02-08 04:55:19,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 387 of 387 statements. [2025-02-08 04:55:19,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:55:19,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:55:19,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 1896 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-08 04:55:19,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:55:19,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 04:55:20,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:55:20,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:55:20,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:55:20,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:55:20,330 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:55:20,330 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 04:55:20,730 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:55:20,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931519044] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 04:55:20,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 04:55:20,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 23 [2025-02-08 04:55:20,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881947953] [2025-02-08 04:55:20,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 04:55:20,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 04:55:20,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:55:20,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 04:55:20,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2025-02-08 04:55:20,734 INFO L87 Difference]: Start difference. First operand 966 states and 1293 transitions. Second operand has 23 states, 23 states have (on average 43.34782608695652) internal successors, (997), 23 states have internal predecessors, (997), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-08 04:55:22,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:55:22,041 INFO L93 Difference]: Finished difference Result 6094 states and 8237 transitions. [2025-02-08 04:55:22,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-08 04:55:22,042 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 43.34782608695652) internal successors, (997), 23 states have internal predecessors, (997), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 387 [2025-02-08 04:55:22,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:55:22,059 INFO L225 Difference]: With dead ends: 6094 [2025-02-08 04:55:22,059 INFO L226 Difference]: Without dead ends: 5690 [2025-02-08 04:55:22,062 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 762 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=296, Invalid=696, Unknown=0, NotChecked=0, Total=992 [2025-02-08 04:55:22,063 INFO L435 NwaCegarLoop]: 1688 mSDtfsCounter, 5627 mSDsluCounter, 15752 mSDsCounter, 0 mSdLazyCounter, 1910 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5637 SdHoareTripleChecker+Valid, 17440 SdHoareTripleChecker+Invalid, 1938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-08 04:55:22,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5637 Valid, 17440 Invalid, 1938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1910 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-08 04:55:22,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5690 states. [2025-02-08 04:55:22,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5690 to 1782. [2025-02-08 04:55:22,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1782 states, 1766 states have (on average 1.3335220838052095) internal successors, (2355), 1767 states have internal predecessors, (2355), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-08 04:55:22,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1782 states to 1782 states and 2379 transitions. [2025-02-08 04:55:22,137 INFO L78 Accepts]: Start accepts. Automaton has 1782 states and 2379 transitions. Word has length 387 [2025-02-08 04:55:22,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:55:22,137 INFO L471 AbstractCegarLoop]: Abstraction has 1782 states and 2379 transitions. [2025-02-08 04:55:22,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 43.34782608695652) internal successors, (997), 23 states have internal predecessors, (997), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-08 04:55:22,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1782 states and 2379 transitions. [2025-02-08 04:55:22,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 838 [2025-02-08 04:55:22,151 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:55:22,152 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 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, 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, 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] [2025-02-08 04:55:22,164 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 [2025-02-08 04:55:22,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:55:22,356 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:55:22,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:55:22,358 INFO L85 PathProgramCache]: Analyzing trace with hash -933901984, now seen corresponding path program 2 times [2025-02-08 04:55:22,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:55:22,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477643539] [2025-02-08 04:55:22,358 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 04:55:22,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:55:22,598 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 837 statements into 2 equivalence classes. [2025-02-08 04:55:22,622 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 72 of 837 statements. [2025-02-08 04:55:22,622 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 04:55:22,623 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:55:22,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3381 trivial. 0 not checked. [2025-02-08 04:55:22,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:55:22,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477643539] [2025-02-08 04:55:22,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477643539] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:55:22,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:55:22,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 04:55:22,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808301958] [2025-02-08 04:55:22,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:55:22,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 04:55:22,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:55:22,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 04:55:22,757 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 04:55:22,758 INFO L87 Difference]: Start difference. First operand 1782 states and 2379 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:55:23,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:55:23,051 INFO L93 Difference]: Finished difference Result 2198 states and 2948 transitions. [2025-02-08 04:55:23,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 04:55:23,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 837 [2025-02-08 04:55:23,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:55:23,058 INFO L225 Difference]: With dead ends: 2198 [2025-02-08 04:55:23,058 INFO L226 Difference]: Without dead ends: 1797 [2025-02-08 04:55:23,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-08 04:55:23,060 INFO L435 NwaCegarLoop]: 353 mSDtfsCounter, 14 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 04:55:23,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1501 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 04:55:23,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2025-02-08 04:55:23,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1788. [2025-02-08 04:55:23,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1788 states, 1772 states have (on average 1.332392776523702) internal successors, (2361), 1773 states have internal predecessors, (2361), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-08 04:55:23,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2385 transitions. [2025-02-08 04:55:23,106 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2385 transitions. Word has length 837 [2025-02-08 04:55:23,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:55:23,108 INFO L471 AbstractCegarLoop]: Abstraction has 1788 states and 2385 transitions. [2025-02-08 04:55:23,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:55:23,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2385 transitions. [2025-02-08 04:55:23,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2025-02-08 04:55:23,122 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:55:23,123 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 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, 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, 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] [2025-02-08 04:55:23,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 04:55:23,123 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:55:23,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:55:23,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1220480549, now seen corresponding path program 1 times [2025-02-08 04:55:23,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:55:23,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504520367] [2025-02-08 04:55:23,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:55:23,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:55:23,300 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 838 statements into 1 equivalence classes. [2025-02-08 04:55:23,567 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 838 of 838 statements. [2025-02-08 04:55:23,568 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:55:23,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:55:30,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 0 proven. 3377 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:55:30,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:55:30,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504520367] [2025-02-08 04:55:30,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504520367] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:55:30,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018680076] [2025-02-08 04:55:30,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:55:30,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:55:30,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:55:30,551 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) [2025-02-08 04:55:30,553 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 [2025-02-08 04:55:31,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 838 statements into 1 equivalence classes. [2025-02-08 04:55:31,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 838 of 838 statements. [2025-02-08 04:55:31,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:55:31,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:55:31,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 4159 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 04:55:31,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:55:31,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 04:55:31,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:55:31,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:55:32,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:55:32,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:55:32,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:55:32,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:55:32,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:55:32,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:55:32,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:55:32,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:55:32,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 0 proven. 3377 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:55:32,649 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 04:55:33,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 0 proven. 3377 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:55:33,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018680076] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 04:55:33,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 04:55:33,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 14] total 42 [2025-02-08 04:55:33,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278087228] [2025-02-08 04:55:33,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 04:55:33,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-02-08 04:55:33,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:55:33,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-02-08 04:55:33,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=1127, Unknown=0, NotChecked=0, Total=1722 [2025-02-08 04:55:33,558 INFO L87 Difference]: Start difference. First operand 1788 states and 2385 transitions. Second operand has 42 states, 42 states have (on average 55.904761904761905) internal successors, (2348), 42 states have internal predecessors, (2348), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-08 04:55:37,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:55:37,230 INFO L93 Difference]: Finished difference Result 12678 states and 17095 transitions. [2025-02-08 04:55:37,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2025-02-08 04:55:37,231 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 55.904761904761905) internal successors, (2348), 42 states have internal predecessors, (2348), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 838 [2025-02-08 04:55:37,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:55:37,263 INFO L225 Difference]: With dead ends: 12678 [2025-02-08 04:55:37,263 INFO L226 Difference]: Without dead ends: 12268 [2025-02-08 04:55:37,268 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1717 GetRequests, 1653 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1333 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1128, Invalid=2778, Unknown=0, NotChecked=0, Total=3906 [2025-02-08 04:55:37,269 INFO L435 NwaCegarLoop]: 3704 mSDtfsCounter, 16601 mSDsluCounter, 49213 mSDsCounter, 0 mSdLazyCounter, 5809 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16623 SdHoareTripleChecker+Valid, 52917 SdHoareTripleChecker+Invalid, 5885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 5809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-02-08 04:55:37,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16623 Valid, 52917 Invalid, 5885 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 5809 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-02-08 04:55:37,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12268 states. [2025-02-08 04:55:37,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12268 to 3420. [2025-02-08 04:55:37,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3420 states, 3392 states have (on average 1.3293042452830188) internal successors, (4509), 3393 states have internal predecessors, (4509), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-02-08 04:55:37,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3420 states to 3420 states and 4557 transitions. [2025-02-08 04:55:37,395 INFO L78 Accepts]: Start accepts. Automaton has 3420 states and 4557 transitions. Word has length 838 [2025-02-08 04:55:37,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:55:37,397 INFO L471 AbstractCegarLoop]: Abstraction has 3420 states and 4557 transitions. [2025-02-08 04:55:37,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 55.904761904761905) internal successors, (2348), 42 states have internal predecessors, (2348), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-08 04:55:37,398 INFO L276 IsEmpty]: Start isEmpty. Operand 3420 states and 4557 transitions. [2025-02-08 04:55:37,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1739 [2025-02-08 04:55:37,414 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:55:37,414 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 2, 2, 2, 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, 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, 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] [2025-02-08 04:55:37,431 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 [2025-02-08 04:55:37,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:55:37,619 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:55:37,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:55:37,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1441455771, now seen corresponding path program 2 times [2025-02-08 04:55:37,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:55:37,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824017508] [2025-02-08 04:55:37,621 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 04:55:37,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:55:37,939 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 1738 statements into 2 equivalence classes. [2025-02-08 04:55:37,951 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 73 of 1738 statements. [2025-02-08 04:55:37,951 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 04:55:37,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:55:38,053 INFO L134 CoverageAnalysis]: Checked inductivity of 17331 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17331 trivial. 0 not checked. [2025-02-08 04:55:38,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:55:38,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824017508] [2025-02-08 04:55:38,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824017508] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:55:38,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:55:38,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 04:55:38,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619148991] [2025-02-08 04:55:38,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:55:38,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 04:55:38,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:55:38,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 04:55:38,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 04:55:38,055 INFO L87 Difference]: Start difference. First operand 3420 states and 4557 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:55:38,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:55:38,217 INFO L93 Difference]: Finished difference Result 3827 states and 5108 transitions. [2025-02-08 04:55:38,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 04:55:38,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1738 [2025-02-08 04:55:38,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:55:38,227 INFO L225 Difference]: With dead ends: 3827 [2025-02-08 04:55:38,228 INFO L226 Difference]: Without dead ends: 3420 [2025-02-08 04:55:38,229 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 04:55:38,230 INFO L435 NwaCegarLoop]: 357 mSDtfsCounter, 17 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 04:55:38,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 956 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 04:55:38,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3420 states. [2025-02-08 04:55:38,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3420 to 3420. [2025-02-08 04:55:38,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3420 states, 3392 states have (on average 1.3284198113207548) internal successors, (4506), 3393 states have internal predecessors, (4506), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-02-08 04:55:38,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3420 states to 3420 states and 4554 transitions. [2025-02-08 04:55:38,306 INFO L78 Accepts]: Start accepts. Automaton has 3420 states and 4554 transitions. Word has length 1738 [2025-02-08 04:55:38,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:55:38,308 INFO L471 AbstractCegarLoop]: Abstraction has 3420 states and 4554 transitions. [2025-02-08 04:55:38,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:55:38,308 INFO L276 IsEmpty]: Start isEmpty. Operand 3420 states and 4554 transitions. [2025-02-08 04:55:38,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1739 [2025-02-08 04:55:38,324 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:55:38,325 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 2, 2, 2, 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, 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, 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] [2025-02-08 04:55:38,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-08 04:55:38,326 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:55:38,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:55:38,326 INFO L85 PathProgramCache]: Analyzing trace with hash 342659298, now seen corresponding path program 1 times [2025-02-08 04:55:38,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:55:38,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372010517] [2025-02-08 04:55:38,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:55:38,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:55:38,794 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1738 statements into 1 equivalence classes. [2025-02-08 04:55:39,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1738 of 1738 statements. [2025-02-08 04:55:39,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:55:39,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:55:42,030 INFO L134 CoverageAnalysis]: Checked inductivity of 17331 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17331 trivial. 0 not checked. [2025-02-08 04:55:42,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:55:42,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372010517] [2025-02-08 04:55:42,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372010517] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:55:42,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:55:42,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 04:55:42,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448846058] [2025-02-08 04:55:42,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:55:42,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 04:55:42,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:55:42,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 04:55:42,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-08 04:55:42,033 INFO L87 Difference]: Start difference. First operand 3420 states and 4554 transitions. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:55:42,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:55:42,322 INFO L93 Difference]: Finished difference Result 3842 states and 5126 transitions. [2025-02-08 04:55:42,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 04:55:42,323 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1738 [2025-02-08 04:55:42,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:55:42,332 INFO L225 Difference]: With dead ends: 3842 [2025-02-08 04:55:42,332 INFO L226 Difference]: Without dead ends: 3435 [2025-02-08 04:55:42,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-08 04:55:42,334 INFO L435 NwaCegarLoop]: 348 mSDtfsCounter, 14 mSDsluCounter, 1454 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 04:55:42,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1802 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 04:55:42,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2025-02-08 04:55:42,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 3432. [2025-02-08 04:55:42,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3432 states, 3404 states have (on average 1.3281433607520563) internal successors, (4521), 3405 states have internal predecessors, (4521), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-02-08 04:55:42,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3432 states to 3432 states and 4569 transitions. [2025-02-08 04:55:42,409 INFO L78 Accepts]: Start accepts. Automaton has 3432 states and 4569 transitions. Word has length 1738 [2025-02-08 04:55:42,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:55:42,410 INFO L471 AbstractCegarLoop]: Abstraction has 3432 states and 4569 transitions. [2025-02-08 04:55:42,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:55:42,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3432 states and 4569 transitions. [2025-02-08 04:55:42,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1740 [2025-02-08 04:55:42,426 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:55:42,426 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 2, 2, 2, 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, 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, 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, 1] [2025-02-08 04:55:42,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-08 04:55:42,427 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:55:42,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:55:42,428 INFO L85 PathProgramCache]: Analyzing trace with hash -149710461, now seen corresponding path program 1 times [2025-02-08 04:55:42,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:55:42,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684452914] [2025-02-08 04:55:42,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:55:42,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:55:42,766 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1739 statements into 1 equivalence classes. [2025-02-08 04:55:43,468 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1739 of 1739 statements. [2025-02-08 04:55:43,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:55:43,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:55:45,774 INFO L134 CoverageAnalysis]: Checked inductivity of 17331 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17331 trivial. 0 not checked. [2025-02-08 04:55:45,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:55:45,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684452914] [2025-02-08 04:55:45,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684452914] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:55:45,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:55:45,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 04:55:45,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001386855] [2025-02-08 04:55:45,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:55:45,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 04:55:45,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:55:45,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 04:55:45,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 04:55:45,776 INFO L87 Difference]: Start difference. First operand 3432 states and 4569 transitions. Second operand has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:55:46,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:55:46,028 INFO L93 Difference]: Finished difference Result 3860 states and 5147 transitions. [2025-02-08 04:55:46,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 04:55:46,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1739 [2025-02-08 04:55:46,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:55:46,044 INFO L225 Difference]: With dead ends: 3860 [2025-02-08 04:55:46,044 INFO L226 Difference]: Without dead ends: 3441 [2025-02-08 04:55:46,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 04:55:46,050 INFO L435 NwaCegarLoop]: 358 mSDtfsCounter, 8 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 04:55:46,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1522 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 04:55:46,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3441 states. [2025-02-08 04:55:46,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3441 to 3441. [2025-02-08 04:55:46,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3441 states, 3413 states have (on average 1.3272780544975096) internal successors, (4530), 3414 states have internal predecessors, (4530), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-02-08 04:55:46,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3441 states to 3441 states and 4578 transitions. [2025-02-08 04:55:46,119 INFO L78 Accepts]: Start accepts. Automaton has 3441 states and 4578 transitions. Word has length 1739 [2025-02-08 04:55:46,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:55:46,120 INFO L471 AbstractCegarLoop]: Abstraction has 3441 states and 4578 transitions. [2025-02-08 04:55:46,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:55:46,121 INFO L276 IsEmpty]: Start isEmpty. Operand 3441 states and 4578 transitions. [2025-02-08 04:55:46,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1740 [2025-02-08 04:55:46,136 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:55:46,137 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 2, 2, 2, 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, 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, 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, 1] [2025-02-08 04:55:46,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-08 04:55:46,137 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:55:46,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:55:46,138 INFO L85 PathProgramCache]: Analyzing trace with hash -829659929, now seen corresponding path program 1 times [2025-02-08 04:55:46,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:55:46,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614013383] [2025-02-08 04:55:46,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:55:46,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:55:46,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1739 statements into 1 equivalence classes. [2025-02-08 04:55:47,384 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1739 of 1739 statements. [2025-02-08 04:55:47,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:55:47,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:55:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 17331 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17331 trivial. 0 not checked. [2025-02-08 04:55:51,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:55:51,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614013383] [2025-02-08 04:55:51,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614013383] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:55:51,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:55:51,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-08 04:55:51,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900805803] [2025-02-08 04:55:51,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:55:51,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 04:55:51,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:55:51,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 04:55:51,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-08 04:55:51,052 INFO L87 Difference]: Start difference. First operand 3441 states and 4578 transitions. Second operand has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:55:51,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:55:51,492 INFO L93 Difference]: Finished difference Result 3908 states and 5213 transitions. [2025-02-08 04:55:51,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 04:55:51,493 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1739 [2025-02-08 04:55:51,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:55:51,499 INFO L225 Difference]: With dead ends: 3908 [2025-02-08 04:55:51,499 INFO L226 Difference]: Without dead ends: 3480 [2025-02-08 04:55:51,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-02-08 04:55:51,501 INFO L435 NwaCegarLoop]: 349 mSDtfsCounter, 33 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 2446 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 04:55:51,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 2446 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 04:55:51,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2025-02-08 04:55:51,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 3471. [2025-02-08 04:55:51,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3471 states, 3443 states have (on average 1.32791170490851) internal successors, (4572), 3444 states have internal predecessors, (4572), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-02-08 04:55:51,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3471 states to 3471 states and 4620 transitions. [2025-02-08 04:55:51,563 INFO L78 Accepts]: Start accepts. Automaton has 3471 states and 4620 transitions. Word has length 1739 [2025-02-08 04:55:51,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:55:51,564 INFO L471 AbstractCegarLoop]: Abstraction has 3471 states and 4620 transitions. [2025-02-08 04:55:51,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 9 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:55:51,565 INFO L276 IsEmpty]: Start isEmpty. Operand 3471 states and 4620 transitions. [2025-02-08 04:55:51,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1740 [2025-02-08 04:55:51,580 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:55:51,581 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 2, 2, 2, 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, 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, 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, 1] [2025-02-08 04:55:51,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-08 04:55:51,581 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:55:51,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:55:51,582 INFO L85 PathProgramCache]: Analyzing trace with hash -41457885, now seen corresponding path program 1 times [2025-02-08 04:55:51,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:55:51,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061320752] [2025-02-08 04:55:51,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:55:51,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:55:51,902 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1739 statements into 1 equivalence classes. [2025-02-08 04:55:52,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1739 of 1739 statements. [2025-02-08 04:55:52,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:55:52,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:56:24,749 INFO L134 CoverageAnalysis]: Checked inductivity of 17331 backedges. 0 proven. 17327 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:56:24,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:56:24,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061320752] [2025-02-08 04:56:24,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061320752] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:56:24,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088888696] [2025-02-08 04:56:24,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:56:24,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:56:24,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:56:24,755 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) [2025-02-08 04:56:24,756 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 [2025-02-08 04:56:26,074 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1739 statements into 1 equivalence classes. [2025-02-08 04:56:27,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1739 of 1739 statements. [2025-02-08 04:56:27,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:56:27,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:56:27,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 8684 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-02-08 04:56:27,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:56:27,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 04:56:27,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:27,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:27,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:27,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:27,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:27,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:27,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:27,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:27,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:28,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:28,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:28,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:28,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:28,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:28,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:28,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:28,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:28,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:28,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:28,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:28,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:29,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-08 04:56:29,098 INFO L134 CoverageAnalysis]: Checked inductivity of 17331 backedges. 0 proven. 17327 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:56:29,098 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 04:56:31,331 INFO L134 CoverageAnalysis]: Checked inductivity of 17331 backedges. 0 proven. 17327 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:56:31,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088888696] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 04:56:31,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 04:56:31,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 26, 26] total 79 [2025-02-08 04:56:31,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456526735] [2025-02-08 04:56:31,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 04:56:31,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2025-02-08 04:56:31,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:56:31,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2025-02-08 04:56:31,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2226, Invalid=3936, Unknown=0, NotChecked=0, Total=6162 [2025-02-08 04:56:31,342 INFO L87 Difference]: Start difference. First operand 3471 states and 4620 transitions. Second operand has 79 states, 79 states have (on average 63.91139240506329) internal successors, (5049), 79 states have internal predecessors, (5049), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6)