./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-1.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_BER_nondet_test3-1.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 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 04:45:11,934 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 04:45:11,996 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 04:45:12,000 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 04:45:12,000 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 04:45:12,014 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 04:45:12,015 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 04:45:12,015 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 04:45:12,015 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 04:45:12,015 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 04:45:12,015 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 04:45:12,015 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 04:45:12,016 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 04:45:12,016 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 04:45:12,016 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 04:45:12,016 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 04:45:12,016 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 04:45:12,016 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 04:45:12,016 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 04:45:12,016 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 04:45:12,016 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 04:45:12,016 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 04:45:12,017 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 04:45:12,017 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 04:45:12,017 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 04:45:12,017 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 04:45:12,017 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 04:45:12,017 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 04:45:12,017 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 04:45:12,017 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 04:45:12,017 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 04:45:12,017 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 04:45:12,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 04:45:12,018 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 04:45:12,018 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 04:45:12,018 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 04:45:12,018 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 04:45:12,018 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 04:45:12,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 04:45:12,018 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 04:45:12,018 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 04:45:12,018 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 04:45:12,018 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 04:45:12,018 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 -> 6fd297418200393a9bb890e84311a80b6eacd7d5d7cdd65efb1397f8b8ab870f [2025-02-08 04:45:12,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 04:45:12,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 04:45:12,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 04:45:12,245 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 04:45:12,245 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 04:45:12,246 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-1.i [2025-02-08 04:45:13,423 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ffa150fc7/6ce73d792e4b4fccb0aca0331e703628/FLAGe565bf8c6 [2025-02-08 04:45:13,779 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 04:45:13,779 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test3-1.i [2025-02-08 04:45:13,790 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ffa150fc7/6ce73d792e4b4fccb0aca0331e703628/FLAGe565bf8c6 [2025-02-08 04:45:14,012 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ffa150fc7/6ce73d792e4b4fccb0aca0331e703628 [2025-02-08 04:45:14,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 04:45:14,017 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 04:45:14,023 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 04:45:14,023 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 04:45:14,029 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 04:45:14,030 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 04:45:14" (1/1) ... [2025-02-08 04:45:14,033 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ab8e68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:45:14, skipping insertion in model container [2025-02-08 04:45:14,035 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 04:45:14" (1/1) ... [2025-02-08 04:45:14,078 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 04:45:14,328 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_BER_nondet_test3-1.i[33519,33532] [2025-02-08 04:45:14,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 04:45:14,425 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 04:45:14,458 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_BER_nondet_test3-1.i[33519,33532] [2025-02-08 04:45:14,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 04:45:14,562 INFO L204 MainTranslator]: Completed translation [2025-02-08 04:45:14,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:45:14 WrapperNode [2025-02-08 04:45:14,563 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 04:45:14,564 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 04:45:14,564 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 04:45:14,565 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 04:45:14,569 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:45:14" (1/1) ... [2025-02-08 04:45:14,588 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:45:14" (1/1) ... [2025-02-08 04:45:14,638 INFO L138 Inliner]: procedures = 177, calls = 273, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1386 [2025-02-08 04:45:14,638 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 04:45:14,639 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 04:45:14,639 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 04:45:14,639 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 04:45:14,653 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:45:14" (1/1) ... [2025-02-08 04:45:14,653 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:45:14" (1/1) ... [2025-02-08 04:45:14,660 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:45:14" (1/1) ... [2025-02-08 04:45:14,720 INFO L175 MemorySlicer]: Split 254 memory accesses to 3 slices as follows [2, 34, 218]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 4, 50]. [2025-02-08 04:45:14,721 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:45:14" (1/1) ... [2025-02-08 04:45:14,721 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:45:14" (1/1) ... [2025-02-08 04:45:14,746 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:45:14" (1/1) ... [2025-02-08 04:45:14,749 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:45:14" (1/1) ... [2025-02-08 04:45:14,751 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:45:14" (1/1) ... [2025-02-08 04:45:14,753 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:45:14" (1/1) ... [2025-02-08 04:45:14,761 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 04:45:14,762 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 04:45:14,762 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 04:45:14,762 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 04:45:14,763 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:45:14" (1/1) ... [2025-02-08 04:45:14,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 04:45:14,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:45:14,788 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 04:45:14,793 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 04:45:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 04:45:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 04:45:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 04:45:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 04:45:14,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 04:45:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 04:45:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 04:45:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 04:45:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-08 04:45:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-08 04:45:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-08 04:45:14,811 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-08 04:45:14,811 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-08 04:45:14,811 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-08 04:45:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 04:45:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 04:45:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 04:45:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 04:45:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 04:45:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 04:45:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 04:45:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 04:45:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 04:45:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 04:45:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 04:45:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 04:45:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 04:45:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 04:45:14,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 04:45:15,013 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 04:45:15,014 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 04:45:16,048 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L734: 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 04:45:16,118 INFO L? ?]: Removed 313 outVars from TransFormulas that were not future-live. [2025-02-08 04:45:16,118 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 04:45:16,151 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 04:45:16,151 INFO L337 CfgBuilder]: Removed 1 assume(true) statements. [2025-02-08 04:45:16,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 04:45:16 BoogieIcfgContainer [2025-02-08 04:45:16,152 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 04:45:16,153 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 04:45:16,154 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 04:45:16,157 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 04:45:16,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 04:45:14" (1/3) ... [2025-02-08 04:45:16,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@761e628d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 04:45:16, skipping insertion in model container [2025-02-08 04:45:16,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 04:45:14" (2/3) ... [2025-02-08 04:45:16,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@761e628d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 04:45:16, skipping insertion in model container [2025-02-08 04:45:16,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 04:45:16" (3/3) ... [2025-02-08 04:45:16,158 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test3-1.i [2025-02-08 04:45:16,168 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 04:45:16,169 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_nondet_test3-1.i that has 5 procedures, 404 locations, 1 initial locations, 38 loop locations, and 1 error locations. [2025-02-08 04:45:16,217 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 04:45:16,226 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;@2d6a2715, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 04:45:16,226 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-08 04:45:16,231 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 387 states have (on average 1.6175710594315245) internal successors, (626), 389 states have internal predecessors, (626), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 04:45:16,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-08 04:45:16,265 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:16,265 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:45:16,266 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:16,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:16,270 INFO L85 PathProgramCache]: Analyzing trace with hash 866567231, now seen corresponding path program 1 times [2025-02-08 04:45:16,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:16,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118506130] [2025-02-08 04:45:16,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:16,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:16,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 04:45:16,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 04:45:16,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:16,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:16,367 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 04:45:16,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:16,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118506130] [2025-02-08 04:45:16,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118506130] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:16,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:45:16,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 04:45:16,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384753259] [2025-02-08 04:45:16,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:16,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 04:45:16,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:16,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 04:45:16,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 04:45:16,388 INFO L87 Difference]: Start difference. First operand has 396 states, 387 states have (on average 1.6175710594315245) internal successors, (626), 389 states have internal predecessors, (626), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 04:45:16,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:16,464 INFO L93 Difference]: Finished difference Result 790 states and 1271 transitions. [2025-02-08 04:45:16,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 04:45:16,465 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-02-08 04:45:16,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:16,471 INFO L225 Difference]: With dead ends: 790 [2025-02-08 04:45:16,471 INFO L226 Difference]: Without dead ends: 393 [2025-02-08 04:45:16,473 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 04:45:16,475 INFO L435 NwaCegarLoop]: 531 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:16,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 531 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 04:45:16,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2025-02-08 04:45:16,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2025-02-08 04:45:16,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 385 states have (on average 1.4519480519480519) internal successors, (559), 386 states have internal predecessors, (559), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 04:45:16,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 569 transitions. [2025-02-08 04:45:16,510 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 569 transitions. Word has length 11 [2025-02-08 04:45:16,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:16,510 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 569 transitions. [2025-02-08 04:45:16,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 04:45:16,510 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 569 transitions. [2025-02-08 04:45:16,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-08 04:45:16,511 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:16,511 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:45:16,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 04:45:16,511 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:16,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:16,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1720072209, now seen corresponding path program 1 times [2025-02-08 04:45:16,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:16,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098156844] [2025-02-08 04:45:16,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:16,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:16,528 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 04:45:16,547 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 04:45:16,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:16,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:16,710 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 04:45:16,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:16,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098156844] [2025-02-08 04:45:16,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098156844] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:16,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:45:16,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 04:45:16,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488960373] [2025-02-08 04:45:16,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:16,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 04:45:16,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:16,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 04:45:16,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 04:45:16,712 INFO L87 Difference]: Start difference. First operand 393 states and 569 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 04:45:17,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:17,037 INFO L93 Difference]: Finished difference Result 1078 states and 1578 transitions. [2025-02-08 04:45:17,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 04:45:17,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-02-08 04:45:17,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:17,040 INFO L225 Difference]: With dead ends: 1078 [2025-02-08 04:45:17,040 INFO L226 Difference]: Without dead ends: 685 [2025-02-08 04:45:17,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 04:45:17,042 INFO L435 NwaCegarLoop]: 516 mSDtfsCounter, 428 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:17,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 1501 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 04:45:17,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2025-02-08 04:45:17,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 684. [2025-02-08 04:45:17,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 675 states have (on average 1.471111111111111) internal successors, (993), 677 states have internal predecessors, (993), 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 04:45:17,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1005 transitions. [2025-02-08 04:45:17,067 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1005 transitions. Word has length 13 [2025-02-08 04:45:17,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:17,067 INFO L471 AbstractCegarLoop]: Abstraction has 684 states and 1005 transitions. [2025-02-08 04:45:17,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 04:45:17,067 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1005 transitions. [2025-02-08 04:45:17,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-02-08 04:45:17,069 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:17,069 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:45:17,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 04:45:17,069 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:17,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:17,069 INFO L85 PathProgramCache]: Analyzing trace with hash -376230999, now seen corresponding path program 1 times [2025-02-08 04:45:17,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:17,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866552768] [2025-02-08 04:45:17,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:17,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:17,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-02-08 04:45:17,116 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-02-08 04:45:17,116 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:17,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:17,300 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 04:45:17,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:17,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866552768] [2025-02-08 04:45:17,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866552768] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:17,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:45:17,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 04:45:17,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047442760] [2025-02-08 04:45:17,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:17,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 04:45:17,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:17,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 04:45:17,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 04:45:17,301 INFO L87 Difference]: Start difference. First operand 684 states and 1005 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 04:45:17,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:17,438 INFO L93 Difference]: Finished difference Result 953 states and 1392 transitions. [2025-02-08 04:45:17,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 04:45:17,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2025-02-08 04:45:17,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:17,441 INFO L225 Difference]: With dead ends: 953 [2025-02-08 04:45:17,441 INFO L226 Difference]: Without dead ends: 600 [2025-02-08 04:45:17,444 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 04:45:17,445 INFO L435 NwaCegarLoop]: 435 mSDtfsCounter, 30 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:17,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1286 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 04:45:17,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2025-02-08 04:45:17,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2025-02-08 04:45:17,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 591 states have (on average 1.4196277495769882) internal successors, (839), 593 states have internal predecessors, (839), 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 04:45:17,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 851 transitions. [2025-02-08 04:45:17,481 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 851 transitions. Word has length 66 [2025-02-08 04:45:17,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:17,481 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 851 transitions. [2025-02-08 04:45:17,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 04:45:17,481 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 851 transitions. [2025-02-08 04:45:17,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-02-08 04:45:17,483 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:17,483 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:45:17,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 04:45:17,483 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:17,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:17,485 INFO L85 PathProgramCache]: Analyzing trace with hash -661438032, now seen corresponding path program 1 times [2025-02-08 04:45:17,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:17,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117232900] [2025-02-08 04:45:17,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:17,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:17,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-02-08 04:45:17,545 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-02-08 04:45:17,546 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:17,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:17,971 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 04:45:17,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:17,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117232900] [2025-02-08 04:45:17,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117232900] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:17,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:45:17,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 04:45:17,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393623018] [2025-02-08 04:45:17,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:17,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 04:45:17,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:17,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 04:45:17,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-08 04:45:17,974 INFO L87 Difference]: Start difference. First operand 600 states and 851 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 04:45:18,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:18,185 INFO L93 Difference]: Finished difference Result 1109 states and 1542 transitions. [2025-02-08 04:45:18,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 04:45:18,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2025-02-08 04:45:18,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:18,190 INFO L225 Difference]: With dead ends: 1109 [2025-02-08 04:45:18,191 INFO L226 Difference]: Without dead ends: 837 [2025-02-08 04:45:18,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-08 04:45:18,193 INFO L435 NwaCegarLoop]: 440 mSDtfsCounter, 461 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:18,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 1751 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 04:45:18,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2025-02-08 04:45:18,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 599. [2025-02-08 04:45:18,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 590 states have (on average 1.4186440677966101) internal successors, (837), 592 states have internal predecessors, (837), 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 04:45:18,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 849 transitions. [2025-02-08 04:45:18,215 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 849 transitions. Word has length 66 [2025-02-08 04:45:18,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:18,215 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 849 transitions. [2025-02-08 04:45:18,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 04:45:18,216 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 849 transitions. [2025-02-08 04:45:18,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-02-08 04:45:18,218 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:18,218 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] [2025-02-08 04:45:18,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 04:45:18,218 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:18,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:18,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1549070682, now seen corresponding path program 1 times [2025-02-08 04:45:18,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:18,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726058247] [2025-02-08 04:45:18,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:18,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:18,288 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-02-08 04:45:18,294 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-02-08 04:45:18,294 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:18,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:18,437 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 04:45:18,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:18,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726058247] [2025-02-08 04:45:18,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726058247] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:18,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:45:18,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 04:45:18,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740427996] [2025-02-08 04:45:18,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:18,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 04:45:18,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:18,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 04:45:18,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 04:45:18,440 INFO L87 Difference]: Start difference. First operand 599 states and 849 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:18,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:18,549 INFO L93 Difference]: Finished difference Result 1145 states and 1616 transitions. [2025-02-08 04:45:18,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 04:45:18,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 103 [2025-02-08 04:45:18,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:18,552 INFO L225 Difference]: With dead ends: 1145 [2025-02-08 04:45:18,552 INFO L226 Difference]: Without dead ends: 605 [2025-02-08 04:45:18,553 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 04:45:18,553 INFO L435 NwaCegarLoop]: 426 mSDtfsCounter, 105 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:18,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1194 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 04:45:18,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2025-02-08 04:45:18,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 599. [2025-02-08 04:45:18,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 590 states have (on average 1.3949152542372882) internal successors, (823), 592 states have internal predecessors, (823), 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 04:45:18,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 835 transitions. [2025-02-08 04:45:18,566 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 835 transitions. Word has length 103 [2025-02-08 04:45:18,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:18,566 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 835 transitions. [2025-02-08 04:45:18,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:18,566 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 835 transitions. [2025-02-08 04:45:18,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-02-08 04:45:18,567 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:18,567 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] [2025-02-08 04:45:18,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 04:45:18,568 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:18,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:18,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1617212895, now seen corresponding path program 1 times [2025-02-08 04:45:18,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:18,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337779087] [2025-02-08 04:45:18,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:18,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:18,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-02-08 04:45:18,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-02-08 04:45:18,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:18,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:18,985 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 04:45:18,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:18,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337779087] [2025-02-08 04:45:18,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337779087] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:45:18,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778532266] [2025-02-08 04:45:18,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:18,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:45:18,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:45:18,991 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 04:45:18,992 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 04:45:19,192 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-02-08 04:45:19,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-02-08 04:45:19,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:19,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:19,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-08 04:45:19,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:45:19,311 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 04:45:19,331 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 16 treesize of output 17 [2025-02-08 04:45:20,005 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 04:45:20,005 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 04:45:20,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778532266] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:20,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 04:45:20,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 13 [2025-02-08 04:45:20,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752561076] [2025-02-08 04:45:20,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:20,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 04:45:20,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:20,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 04:45:20,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2025-02-08 04:45:20,007 INFO L87 Difference]: Start difference. First operand 599 states and 835 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:22,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-02-08 04:45:22,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:22,912 INFO L93 Difference]: Finished difference Result 1399 states and 1936 transitions. [2025-02-08 04:45:22,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 04:45:22,913 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 103 [2025-02-08 04:45:22,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:22,917 INFO L225 Difference]: With dead ends: 1399 [2025-02-08 04:45:22,917 INFO L226 Difference]: Without dead ends: 885 [2025-02-08 04:45:22,919 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2025-02-08 04:45:22,920 INFO L435 NwaCegarLoop]: 436 mSDtfsCounter, 727 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 2412 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:22,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 2412 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-02-08 04:45:22,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2025-02-08 04:45:22,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 624. [2025-02-08 04:45:22,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 615 states have (on average 1.3869918699186992) internal successors, (853), 617 states have internal predecessors, (853), 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 04:45:22,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 865 transitions. [2025-02-08 04:45:22,957 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 865 transitions. Word has length 103 [2025-02-08 04:45:22,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:22,957 INFO L471 AbstractCegarLoop]: Abstraction has 624 states and 865 transitions. [2025-02-08 04:45:22,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:22,957 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 865 transitions. [2025-02-08 04:45:22,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-02-08 04:45:22,958 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:22,959 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] [2025-02-08 04:45:22,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 04:45:23,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:45:23,160 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:23,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:23,161 INFO L85 PathProgramCache]: Analyzing trace with hash -847156218, now seen corresponding path program 1 times [2025-02-08 04:45:23,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:23,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684305273] [2025-02-08 04:45:23,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:23,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:23,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-02-08 04:45:23,364 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-02-08 04:45:23,364 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:23,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:23,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 04:45:23,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:23,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684305273] [2025-02-08 04:45:23,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684305273] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:45:23,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608270959] [2025-02-08 04:45:23,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:23,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:45:23,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:45:23,537 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 04:45:23,543 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 04:45:23,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-02-08 04:45:23,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-02-08 04:45:23,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:23,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:23,798 INFO L256 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 04:45:23,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:45:23,810 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 04:45:23,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-02-08 04:45:24,047 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 04:45:24,075 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 04:45:24,075 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 04:45:24,271 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 04:45:24,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608270959] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 04:45:24,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 04:45:24,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 7] total 11 [2025-02-08 04:45:24,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718649362] [2025-02-08 04:45:24,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:24,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 04:45:24,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:24,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 04:45:24,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-02-08 04:45:24,275 INFO L87 Difference]: Start difference. First operand 624 states and 865 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:24,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:24,433 INFO L93 Difference]: Finished difference Result 807 states and 1113 transitions. [2025-02-08 04:45:24,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 04:45:24,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 104 [2025-02-08 04:45:24,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:24,437 INFO L225 Difference]: With dead ends: 807 [2025-02-08 04:45:24,437 INFO L226 Difference]: Without dead ends: 797 [2025-02-08 04:45:24,440 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 200 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-02-08 04:45:24,441 INFO L435 NwaCegarLoop]: 437 mSDtfsCounter, 739 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:24,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 1274 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 04:45:24,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2025-02-08 04:45:24,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 626. [2025-02-08 04:45:24,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 617 states have (on average 1.385737439222042) internal successors, (855), 619 states have internal predecessors, (855), 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 04:45:24,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 867 transitions. [2025-02-08 04:45:24,465 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 867 transitions. Word has length 104 [2025-02-08 04:45:24,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:24,466 INFO L471 AbstractCegarLoop]: Abstraction has 626 states and 867 transitions. [2025-02-08 04:45:24,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:24,466 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 867 transitions. [2025-02-08 04:45:24,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-02-08 04:45:24,467 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:24,467 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] [2025-02-08 04:45:24,478 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 04:45:24,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:45:24,668 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:24,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:24,669 INFO L85 PathProgramCache]: Analyzing trace with hash -821945125, now seen corresponding path program 1 times [2025-02-08 04:45:24,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:24,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213634421] [2025-02-08 04:45:24,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:24,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:24,699 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-02-08 04:45:24,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-02-08 04:45:24,720 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:24,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:24,849 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 04:45:24,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:24,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213634421] [2025-02-08 04:45:24,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213634421] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:24,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:45:24,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 04:45:24,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104883399] [2025-02-08 04:45:24,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:24,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 04:45:24,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:24,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 04:45:24,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 04:45:24,851 INFO L87 Difference]: Start difference. First operand 626 states and 867 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:25,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:25,237 INFO L93 Difference]: Finished difference Result 1437 states and 1981 transitions. [2025-02-08 04:45:25,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 04:45:25,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 157 [2025-02-08 04:45:25,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:25,241 INFO L225 Difference]: With dead ends: 1437 [2025-02-08 04:45:25,241 INFO L226 Difference]: Without dead ends: 968 [2025-02-08 04:45:25,242 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-02-08 04:45:25,242 INFO L435 NwaCegarLoop]: 569 mSDtfsCounter, 1473 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:25,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 1306 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 04:45:25,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2025-02-08 04:45:25,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 765. [2025-02-08 04:45:25,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 755 states have (on average 1.3814569536423842) internal successors, (1043), 758 states have internal predecessors, (1043), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 04:45:25,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1057 transitions. [2025-02-08 04:45:25,266 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1057 transitions. Word has length 157 [2025-02-08 04:45:25,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:25,266 INFO L471 AbstractCegarLoop]: Abstraction has 765 states and 1057 transitions. [2025-02-08 04:45:25,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:25,267 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1057 transitions. [2025-02-08 04:45:25,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-02-08 04:45:25,268 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:25,268 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, 1, 1, 1, 1, 1] [2025-02-08 04:45:25,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 04:45:25,268 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:25,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:25,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1285509769, now seen corresponding path program 1 times [2025-02-08 04:45:25,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:25,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229505628] [2025-02-08 04:45:25,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:25,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:25,310 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-02-08 04:45:25,461 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-02-08 04:45:25,461 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:25,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 04:45:25,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:25,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229505628] [2025-02-08 04:45:25,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229505628] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:45:25,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381059334] [2025-02-08 04:45:25,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:25,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:45:25,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:45:25,629 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 04:45:25,632 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 04:45:25,845 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-02-08 04:45:25,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-02-08 04:45:25,933 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:25,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:25,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-08 04:45:25,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:45:25,990 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 04:45:25,990 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 04:45:25,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381059334] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:25,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 04:45:25,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-08 04:45:25,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813405478] [2025-02-08 04:45:25,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:25,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 04:45:25,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:25,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 04:45:25,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 04:45:25,996 INFO L87 Difference]: Start difference. First operand 765 states and 1057 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:26,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:26,202 INFO L93 Difference]: Finished difference Result 1463 states and 2023 transitions. [2025-02-08 04:45:26,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 04:45:26,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 167 [2025-02-08 04:45:26,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:26,206 INFO L225 Difference]: With dead ends: 1463 [2025-02-08 04:45:26,207 INFO L226 Difference]: Without dead ends: 808 [2025-02-08 04:45:26,208 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 04:45:26,209 INFO L435 NwaCegarLoop]: 438 mSDtfsCounter, 17 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:26,209 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1148 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 04:45:26,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2025-02-08 04:45:26,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 792. [2025-02-08 04:45:26,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 782 states have (on average 1.3759590792838874) internal successors, (1076), 785 states have internal predecessors, (1076), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 04:45:26,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1090 transitions. [2025-02-08 04:45:26,231 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1090 transitions. Word has length 167 [2025-02-08 04:45:26,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:26,231 INFO L471 AbstractCegarLoop]: Abstraction has 792 states and 1090 transitions. [2025-02-08 04:45:26,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:26,231 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1090 transitions. [2025-02-08 04:45:26,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-02-08 04:45:26,235 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:26,236 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, 1, 1, 1, 1, 1, 1] [2025-02-08 04:45:26,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 04:45:26,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:45:26,438 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:26,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:26,439 INFO L85 PathProgramCache]: Analyzing trace with hash -259980623, now seen corresponding path program 1 times [2025-02-08 04:45:26,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:26,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842323787] [2025-02-08 04:45:26,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:26,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:26,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-02-08 04:45:26,498 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-02-08 04:45:26,498 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:26,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:26,740 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 04:45:26,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:26,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842323787] [2025-02-08 04:45:26,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842323787] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:26,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:45:26,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 04:45:26,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926245855] [2025-02-08 04:45:26,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:26,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 04:45:26,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:26,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 04:45:26,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 04:45:26,742 INFO L87 Difference]: Start difference. First operand 792 states and 1090 transitions. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:27,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:27,092 INFO L93 Difference]: Finished difference Result 1482 states and 2042 transitions. [2025-02-08 04:45:27,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 04:45:27,092 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2025-02-08 04:45:27,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:27,095 INFO L225 Difference]: With dead ends: 1482 [2025-02-08 04:45:27,096 INFO L226 Difference]: Without dead ends: 804 [2025-02-08 04:45:27,097 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 04:45:27,097 INFO L435 NwaCegarLoop]: 437 mSDtfsCounter, 8 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:27,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1422 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 04:45:27,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2025-02-08 04:45:27,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 800. [2025-02-08 04:45:27,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 790 states have (on average 1.3746835443037975) internal successors, (1086), 793 states have internal predecessors, (1086), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 04:45:27,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1100 transitions. [2025-02-08 04:45:27,117 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1100 transitions. Word has length 168 [2025-02-08 04:45:27,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:27,117 INFO L471 AbstractCegarLoop]: Abstraction has 800 states and 1100 transitions. [2025-02-08 04:45:27,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:27,117 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1100 transitions. [2025-02-08 04:45:27,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2025-02-08 04:45:27,119 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:27,119 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, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:45:27,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 04:45:27,119 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:27,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:27,120 INFO L85 PathProgramCache]: Analyzing trace with hash 8529229, now seen corresponding path program 1 times [2025-02-08 04:45:27,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:27,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458984184] [2025-02-08 04:45:27,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:27,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:27,151 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-02-08 04:45:27,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-02-08 04:45:27,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:27,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:27,369 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 04:45:27,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:27,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458984184] [2025-02-08 04:45:27,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458984184] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:27,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:45:27,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 04:45:27,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253184078] [2025-02-08 04:45:27,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:27,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 04:45:27,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:27,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 04:45:27,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-08 04:45:27,371 INFO L87 Difference]: Start difference. First operand 800 states and 1100 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:27,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:27,990 INFO L93 Difference]: Finished difference Result 1497 states and 2062 transitions. [2025-02-08 04:45:27,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 04:45:27,991 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 169 [2025-02-08 04:45:27,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:27,994 INFO L225 Difference]: With dead ends: 1497 [2025-02-08 04:45:27,994 INFO L226 Difference]: Without dead ends: 822 [2025-02-08 04:45:27,995 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 04:45:27,996 INFO L435 NwaCegarLoop]: 429 mSDtfsCounter, 12 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:27,997 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2027 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 04:45:27,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2025-02-08 04:45:28,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 816. [2025-02-08 04:45:28,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 806 states have (on average 1.3746898263027296) internal successors, (1108), 809 states have internal predecessors, (1108), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 04:45:28,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1122 transitions. [2025-02-08 04:45:28,016 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1122 transitions. Word has length 169 [2025-02-08 04:45:28,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:28,017 INFO L471 AbstractCegarLoop]: Abstraction has 816 states and 1122 transitions. [2025-02-08 04:45:28,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:28,017 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1122 transitions. [2025-02-08 04:45:28,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2025-02-08 04:45:28,018 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:28,018 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, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:45:28,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 04:45:28,019 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:28,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:28,019 INFO L85 PathProgramCache]: Analyzing trace with hash -955855617, now seen corresponding path program 1 times [2025-02-08 04:45:28,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:28,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807342804] [2025-02-08 04:45:28,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:28,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:28,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-02-08 04:45:28,129 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-02-08 04:45:28,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:28,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 04:45:28,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:28,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807342804] [2025-02-08 04:45:28,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807342804] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:45:28,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145250512] [2025-02-08 04:45:28,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:28,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:45:28,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:45:28,330 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 04:45:28,332 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 04:45:28,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-02-08 04:45:28,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-02-08 04:45:28,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:28,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:28,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-08 04:45:28,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:45:28,653 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 04:45:29,127 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 04:45:29,127 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 04:45:29,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145250512] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:29,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 04:45:29,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2025-02-08 04:45:29,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760295637] [2025-02-08 04:45:29,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:29,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 04:45:29,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:29,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 04:45:29,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-02-08 04:45:29,128 INFO L87 Difference]: Start difference. First operand 816 states and 1122 transitions. Second operand has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:30,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:30,122 INFO L93 Difference]: Finished difference Result 1454 states and 1983 transitions. [2025-02-08 04:45:30,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 04:45:30,122 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 169 [2025-02-08 04:45:30,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:30,126 INFO L225 Difference]: With dead ends: 1454 [2025-02-08 04:45:30,126 INFO L226 Difference]: Without dead ends: 1046 [2025-02-08 04:45:30,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2025-02-08 04:45:30,128 INFO L435 NwaCegarLoop]: 485 mSDtfsCounter, 468 mSDsluCounter, 2090 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:30,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 2575 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 04:45:30,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2025-02-08 04:45:30,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 850. [2025-02-08 04:45:30,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 840 states have (on average 1.3642857142857143) internal successors, (1146), 843 states have internal predecessors, (1146), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 04:45:30,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1160 transitions. [2025-02-08 04:45:30,152 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1160 transitions. Word has length 169 [2025-02-08 04:45:30,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:30,152 INFO L471 AbstractCegarLoop]: Abstraction has 850 states and 1160 transitions. [2025-02-08 04:45:30,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:30,153 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1160 transitions. [2025-02-08 04:45:30,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2025-02-08 04:45:30,154 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:30,155 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:45:30,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 04:45:30,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-08 04:45:30,359 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:30,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:30,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1167988452, now seen corresponding path program 1 times [2025-02-08 04:45:30,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:30,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520549119] [2025-02-08 04:45:30,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:30,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:30,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-02-08 04:45:30,514 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-02-08 04:45:30,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:30,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:30,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 04:45:30,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:30,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520549119] [2025-02-08 04:45:30,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520549119] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:45:30,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074722761] [2025-02-08 04:45:30,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:30,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:45:30,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:45:30,658 INFO L229 MonitoredProcess]: Starting monitored process 6 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 04:45:30,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 04:45:30,945 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-02-08 04:45:31,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-02-08 04:45:31,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:31,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:31,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 04:45:31,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:45:31,113 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 04:45:31,113 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 04:45:31,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074722761] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:31,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 04:45:31,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2025-02-08 04:45:31,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477647160] [2025-02-08 04:45:31,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:31,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 04:45:31,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:31,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 04:45:31,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-08 04:45:31,115 INFO L87 Difference]: Start difference. First operand 850 states and 1160 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:31,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:31,544 INFO L93 Difference]: Finished difference Result 1264 states and 1724 transitions. [2025-02-08 04:45:31,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 04:45:31,544 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 170 [2025-02-08 04:45:31,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:31,548 INFO L225 Difference]: With dead ends: 1264 [2025-02-08 04:45:31,548 INFO L226 Difference]: Without dead ends: 856 [2025-02-08 04:45:31,549 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-08 04:45:31,550 INFO L435 NwaCegarLoop]: 429 mSDtfsCounter, 34 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:31,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1864 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 04:45:31,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2025-02-08 04:45:31,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 850. [2025-02-08 04:45:31,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 840 states have (on average 1.3607142857142858) internal successors, (1143), 843 states have internal predecessors, (1143), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 04:45:31,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1157 transitions. [2025-02-08 04:45:31,570 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1157 transitions. Word has length 170 [2025-02-08 04:45:31,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:31,572 INFO L471 AbstractCegarLoop]: Abstraction has 850 states and 1157 transitions. [2025-02-08 04:45:31,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:31,572 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1157 transitions. [2025-02-08 04:45:31,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-02-08 04:45:31,573 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:31,573 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:45:31,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 04:45:31,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-08 04:45:31,774 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:31,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:31,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1867294780, now seen corresponding path program 1 times [2025-02-08 04:45:31,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:31,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447441744] [2025-02-08 04:45:31,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:31,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:31,827 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-02-08 04:45:31,879 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-02-08 04:45:31,879 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:31,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:32,072 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 04:45:32,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:32,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447441744] [2025-02-08 04:45:32,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447441744] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:32,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:45:32,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 04:45:32,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680182685] [2025-02-08 04:45:32,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:32,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 04:45:32,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:32,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 04:45:32,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 04:45:32,074 INFO L87 Difference]: Start difference. First operand 850 states and 1157 transitions. Second operand has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:32,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:32,319 INFO L93 Difference]: Finished difference Result 1267 states and 1725 transitions. [2025-02-08 04:45:32,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 04:45:32,320 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2025-02-08 04:45:32,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:32,323 INFO L225 Difference]: With dead ends: 1267 [2025-02-08 04:45:32,323 INFO L226 Difference]: Without dead ends: 859 [2025-02-08 04:45:32,323 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 04:45:32,324 INFO L435 NwaCegarLoop]: 436 mSDtfsCounter, 8 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:32,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1570 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 04:45:32,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2025-02-08 04:45:32,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 859. [2025-02-08 04:45:32,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 849 states have (on average 1.3568904593639577) internal successors, (1152), 852 states have internal predecessors, (1152), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 04:45:32,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1166 transitions. [2025-02-08 04:45:32,344 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1166 transitions. Word has length 171 [2025-02-08 04:45:32,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:32,344 INFO L471 AbstractCegarLoop]: Abstraction has 859 states and 1166 transitions. [2025-02-08 04:45:32,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:32,345 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1166 transitions. [2025-02-08 04:45:32,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-02-08 04:45:32,346 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:32,346 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:45:32,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-08 04:45:32,346 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:32,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:32,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1849636392, now seen corresponding path program 1 times [2025-02-08 04:45:32,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:32,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072927263] [2025-02-08 04:45:32,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:32,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:32,377 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-02-08 04:45:32,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-02-08 04:45:32,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:32,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:32,569 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 04:45:32,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:32,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072927263] [2025-02-08 04:45:32,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072927263] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:32,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:45:32,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 04:45:32,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75854594] [2025-02-08 04:45:32,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:32,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 04:45:32,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:32,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 04:45:32,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-08 04:45:32,571 INFO L87 Difference]: Start difference. First operand 859 states and 1166 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:32,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:32,860 INFO L93 Difference]: Finished difference Result 1291 states and 1752 transitions. [2025-02-08 04:45:32,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 04:45:32,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 172 [2025-02-08 04:45:32,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:32,863 INFO L225 Difference]: With dead ends: 1291 [2025-02-08 04:45:32,863 INFO L226 Difference]: Without dead ends: 874 [2025-02-08 04:45:32,864 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 04:45:32,864 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 12 mSDsluCounter, 1854 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2282 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:32,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2282 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 04:45:32,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2025-02-08 04:45:32,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 871. [2025-02-08 04:45:32,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 861 states have (on average 1.3554006968641115) internal successors, (1167), 864 states have internal predecessors, (1167), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 04:45:32,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1181 transitions. [2025-02-08 04:45:32,881 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1181 transitions. Word has length 172 [2025-02-08 04:45:32,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:32,881 INFO L471 AbstractCegarLoop]: Abstraction has 871 states and 1181 transitions. [2025-02-08 04:45:32,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:32,882 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1181 transitions. [2025-02-08 04:45:32,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-02-08 04:45:32,883 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:32,883 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:45:32,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-08 04:45:32,883 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:32,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:32,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1087761076, now seen corresponding path program 1 times [2025-02-08 04:45:32,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:32,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465176292] [2025-02-08 04:45:32,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:32,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:32,913 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-02-08 04:45:33,054 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-02-08 04:45:33,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:33,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:33,273 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 04:45:33,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:33,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465176292] [2025-02-08 04:45:33,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465176292] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:45:33,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094563119] [2025-02-08 04:45:33,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:33,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:45:33,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:45:33,276 INFO L229 MonitoredProcess]: Starting monitored process 7 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 04:45:33,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 04:45:33,520 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-02-08 04:45:33,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-02-08 04:45:33,630 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:33,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:33,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-08 04:45:33,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:45:33,834 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 04:45:33,834 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 04:45:33,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094563119] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:33,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 04:45:33,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-02-08 04:45:33,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098103024] [2025-02-08 04:45:33,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:33,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 04:45:33,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:33,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 04:45:33,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-08 04:45:33,836 INFO L87 Difference]: Start difference. First operand 871 states and 1181 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:34,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:34,193 INFO L93 Difference]: Finished difference Result 1315 states and 1782 transitions. [2025-02-08 04:45:34,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 04:45:34,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 172 [2025-02-08 04:45:34,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:34,196 INFO L225 Difference]: With dead ends: 1315 [2025-02-08 04:45:34,196 INFO L226 Difference]: Without dead ends: 886 [2025-02-08 04:45:34,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-08 04:45:34,197 INFO L435 NwaCegarLoop]: 433 mSDtfsCounter, 12 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:34,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2288 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 04:45:34,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2025-02-08 04:45:34,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 871. [2025-02-08 04:45:34,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 861 states have (on average 1.3554006968641115) internal successors, (1167), 864 states have internal predecessors, (1167), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 04:45:34,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1181 transitions. [2025-02-08 04:45:34,219 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1181 transitions. Word has length 172 [2025-02-08 04:45:34,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:34,219 INFO L471 AbstractCegarLoop]: Abstraction has 871 states and 1181 transitions. [2025-02-08 04:45:34,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:34,219 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1181 transitions. [2025-02-08 04:45:34,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-02-08 04:45:34,220 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:34,221 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:45:34,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 04:45:34,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-08 04:45:34,421 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:34,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:34,422 INFO L85 PathProgramCache]: Analyzing trace with hash -813338027, now seen corresponding path program 1 times [2025-02-08 04:45:34,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:34,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133496933] [2025-02-08 04:45:34,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:34,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:34,453 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-02-08 04:45:34,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-02-08 04:45:34,477 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:34,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:34,696 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 04:45:34,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:34,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133496933] [2025-02-08 04:45:34,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133496933] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:34,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:45:34,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-08 04:45:34,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400994142] [2025-02-08 04:45:34,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:34,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 04:45:34,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:34,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 04:45:34,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-08 04:45:34,698 INFO L87 Difference]: Start difference. First operand 871 states and 1181 transitions. Second operand has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:35,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:35,024 INFO L93 Difference]: Finished difference Result 1330 states and 1800 transitions. [2025-02-08 04:45:35,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 04:45:35,024 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 173 [2025-02-08 04:45:35,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:35,027 INFO L225 Difference]: With dead ends: 1330 [2025-02-08 04:45:35,027 INFO L226 Difference]: Without dead ends: 901 [2025-02-08 04:45:35,028 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-08 04:45:35,028 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 20 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2726 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:35,028 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2726 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 04:45:35,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2025-02-08 04:45:35,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 892. [2025-02-08 04:45:35,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 882 states have (on average 1.3537414965986394) internal successors, (1194), 885 states have internal predecessors, (1194), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 04:45:35,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1208 transitions. [2025-02-08 04:45:35,045 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1208 transitions. Word has length 173 [2025-02-08 04:45:35,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:35,045 INFO L471 AbstractCegarLoop]: Abstraction has 892 states and 1208 transitions. [2025-02-08 04:45:35,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:35,045 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1208 transitions. [2025-02-08 04:45:35,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-02-08 04:45:35,047 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:35,047 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:45:35,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-08 04:45:35,047 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:35,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:35,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1329960289, now seen corresponding path program 1 times [2025-02-08 04:45:35,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:35,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164872453] [2025-02-08 04:45:35,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:35,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:35,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-02-08 04:45:35,199 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-02-08 04:45:35,200 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:35,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:35,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 04:45:35,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:35,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164872453] [2025-02-08 04:45:35,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164872453] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:45:35,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205768092] [2025-02-08 04:45:35,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:35,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:45:35,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:45:35,323 INFO L229 MonitoredProcess]: Starting monitored process 8 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 04:45:35,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 04:45:35,565 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-02-08 04:45:35,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-02-08 04:45:35,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:35,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:35,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-08 04:45:35,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:45:35,761 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 04:45:35,761 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 04:45:35,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205768092] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:35,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 04:45:35,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-02-08 04:45:35,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798242536] [2025-02-08 04:45:35,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:35,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 04:45:35,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:35,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 04:45:35,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-02-08 04:45:35,763 INFO L87 Difference]: Start difference. First operand 892 states and 1208 transitions. Second operand has 8 states, 8 states have (on average 20.5) internal successors, (164), 8 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:36,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:36,147 INFO L93 Difference]: Finished difference Result 1380 states and 1862 transitions. [2025-02-08 04:45:36,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 04:45:36,148 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.5) internal successors, (164), 8 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 173 [2025-02-08 04:45:36,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:36,151 INFO L225 Difference]: With dead ends: 1380 [2025-02-08 04:45:36,151 INFO L226 Difference]: Without dead ends: 930 [2025-02-08 04:45:36,152 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-02-08 04:45:36,153 INFO L435 NwaCegarLoop]: 434 mSDtfsCounter, 40 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 2691 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:36,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 2691 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 04:45:36,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2025-02-08 04:45:36,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 907. [2025-02-08 04:45:36,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 897 states have (on average 1.351170568561873) internal successors, (1212), 900 states have internal predecessors, (1212), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 04:45:36,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1226 transitions. [2025-02-08 04:45:36,185 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1226 transitions. Word has length 173 [2025-02-08 04:45:36,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:36,185 INFO L471 AbstractCegarLoop]: Abstraction has 907 states and 1226 transitions. [2025-02-08 04:45:36,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.5) internal successors, (164), 8 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:36,186 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1226 transitions. [2025-02-08 04:45:36,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-02-08 04:45:36,189 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:36,189 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:45:36,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 04:45:36,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:45:36,390 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:36,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:36,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1765884497, now seen corresponding path program 1 times [2025-02-08 04:45:36,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:36,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490953273] [2025-02-08 04:45:36,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:36,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:36,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-02-08 04:45:36,440 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-02-08 04:45:36,440 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:36,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:36,698 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 04:45:36,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:36,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490953273] [2025-02-08 04:45:36,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490953273] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:36,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:45:36,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-08 04:45:36,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821989223] [2025-02-08 04:45:36,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:36,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 04:45:36,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:36,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 04:45:36,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-02-08 04:45:36,700 INFO L87 Difference]: Start difference. First operand 907 states and 1226 transitions. Second operand has 10 states, 10 states have (on average 16.5) internal successors, (165), 10 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:37,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:37,139 INFO L93 Difference]: Finished difference Result 1399 states and 1890 transitions. [2025-02-08 04:45:37,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 04:45:37,140 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.5) internal successors, (165), 10 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2025-02-08 04:45:37,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:37,142 INFO L225 Difference]: With dead ends: 1399 [2025-02-08 04:45:37,142 INFO L226 Difference]: Without dead ends: 934 [2025-02-08 04:45:37,143 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-02-08 04:45:37,143 INFO L435 NwaCegarLoop]: 434 mSDtfsCounter, 23 mSDsluCounter, 3025 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3459 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:37,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3459 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 04:45:37,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2025-02-08 04:45:37,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 916. [2025-02-08 04:45:37,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 906 states have (on average 1.3476821192052981) internal successors, (1221), 909 states have internal predecessors, (1221), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 04:45:37,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1235 transitions. [2025-02-08 04:45:37,164 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1235 transitions. Word has length 174 [2025-02-08 04:45:37,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:37,165 INFO L471 AbstractCegarLoop]: Abstraction has 916 states and 1235 transitions. [2025-02-08 04:45:37,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.5) internal successors, (165), 10 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:37,165 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1235 transitions. [2025-02-08 04:45:37,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-02-08 04:45:37,166 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:37,166 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:45:37,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-08 04:45:37,166 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:37,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:37,167 INFO L85 PathProgramCache]: Analyzing trace with hash -907747415, now seen corresponding path program 1 times [2025-02-08 04:45:37,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:37,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840681913] [2025-02-08 04:45:37,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:37,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:37,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-02-08 04:45:37,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-02-08 04:45:37,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:37,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:37,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 04:45:37,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:37,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840681913] [2025-02-08 04:45:37,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840681913] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:45:37,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740592313] [2025-02-08 04:45:37,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:37,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:45:37,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:45:37,355 INFO L229 MonitoredProcess]: Starting monitored process 9 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 04:45:37,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 04:45:37,614 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-02-08 04:45:37,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-02-08 04:45:37,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:37,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:37,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-08 04:45:37,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:45:37,945 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 04:45:37,945 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 04:45:37,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740592313] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:37,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 04:45:37,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-02-08 04:45:37,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879191223] [2025-02-08 04:45:37,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:37,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 04:45:37,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:37,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 04:45:37,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-08 04:45:37,947 INFO L87 Difference]: Start difference. First operand 916 states and 1235 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:38,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:38,437 INFO L93 Difference]: Finished difference Result 1713 states and 2309 transitions. [2025-02-08 04:45:38,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 04:45:38,439 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2025-02-08 04:45:38,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:38,442 INFO L225 Difference]: With dead ends: 1713 [2025-02-08 04:45:38,442 INFO L226 Difference]: Without dead ends: 930 [2025-02-08 04:45:38,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-08 04:45:38,444 INFO L435 NwaCegarLoop]: 433 mSDtfsCounter, 12 mSDsluCounter, 1594 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:38,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2027 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 04:45:38,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2025-02-08 04:45:38,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 916. [2025-02-08 04:45:38,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 906 states have (on average 1.3476821192052981) internal successors, (1221), 909 states have internal predecessors, (1221), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 04:45:38,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1235 transitions. [2025-02-08 04:45:38,461 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1235 transitions. Word has length 174 [2025-02-08 04:45:38,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:38,461 INFO L471 AbstractCegarLoop]: Abstraction has 916 states and 1235 transitions. [2025-02-08 04:45:38,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:38,462 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1235 transitions. [2025-02-08 04:45:38,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2025-02-08 04:45:38,463 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:38,463 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:45:38,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 04:45:38,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:45:38,665 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:38,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:38,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1896812464, now seen corresponding path program 1 times [2025-02-08 04:45:38,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:38,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513413145] [2025-02-08 04:45:38,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:38,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:38,697 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-02-08 04:45:38,715 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-02-08 04:45:38,715 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:38,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:38,923 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 04:45:38,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:38,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513413145] [2025-02-08 04:45:38,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513413145] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:38,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:45:38,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-08 04:45:38,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599680180] [2025-02-08 04:45:38,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:38,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 04:45:38,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:38,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 04:45:38,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-08 04:45:38,925 INFO L87 Difference]: Start difference. First operand 916 states and 1235 transitions. Second operand has 9 states, 9 states have (on average 18.555555555555557) internal successors, (167), 9 states have internal predecessors, (167), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:39,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:39,340 INFO L93 Difference]: Finished difference Result 1720 states and 2315 transitions. [2025-02-08 04:45:39,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 04:45:39,340 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.555555555555557) internal successors, (167), 9 states have internal predecessors, (167), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 175 [2025-02-08 04:45:39,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:39,344 INFO L225 Difference]: With dead ends: 1720 [2025-02-08 04:45:39,344 INFO L226 Difference]: Without dead ends: 942 [2025-02-08 04:45:39,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-08 04:45:39,345 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 20 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2160 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:39,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2160 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 04:45:39,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2025-02-08 04:45:39,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 930. [2025-02-08 04:45:39,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 920 states have (on average 1.3467391304347827) internal successors, (1239), 923 states have internal predecessors, (1239), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 04:45:39,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1253 transitions. [2025-02-08 04:45:39,366 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1253 transitions. Word has length 175 [2025-02-08 04:45:39,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:39,367 INFO L471 AbstractCegarLoop]: Abstraction has 930 states and 1253 transitions. [2025-02-08 04:45:39,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.555555555555557) internal successors, (167), 9 states have internal predecessors, (167), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:39,367 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1253 transitions. [2025-02-08 04:45:39,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2025-02-08 04:45:39,368 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:39,368 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:45:39,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-08 04:45:39,368 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:39,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:39,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1529973378, now seen corresponding path program 1 times [2025-02-08 04:45:39,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:39,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726006585] [2025-02-08 04:45:39,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:39,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:39,399 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-02-08 04:45:39,470 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-02-08 04:45:39,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:39,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:39,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 04:45:39,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:39,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726006585] [2025-02-08 04:45:39,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726006585] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:45:39,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609963167] [2025-02-08 04:45:39,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:39,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:45:39,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:45:39,576 INFO L229 MonitoredProcess]: Starting monitored process 10 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 04:45:39,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 04:45:39,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-02-08 04:45:40,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-02-08 04:45:40,077 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:40,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:40,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-08 04:45:40,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:45:40,159 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 04:45:40,159 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 04:45:40,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609963167] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:40,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 04:45:40,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-02-08 04:45:40,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609095740] [2025-02-08 04:45:40,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:40,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 04:45:40,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:40,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 04:45:40,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-08 04:45:40,161 INFO L87 Difference]: Start difference. First operand 930 states and 1253 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:40,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:40,613 INFO L93 Difference]: Finished difference Result 1739 states and 2344 transitions. [2025-02-08 04:45:40,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 04:45:40,614 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 175 [2025-02-08 04:45:40,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:40,617 INFO L225 Difference]: With dead ends: 1739 [2025-02-08 04:45:40,617 INFO L226 Difference]: Without dead ends: 954 [2025-02-08 04:45:40,618 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-08 04:45:40,619 INFO L435 NwaCegarLoop]: 425 mSDtfsCounter, 17 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2050 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:40,619 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2050 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 04:45:40,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2025-02-08 04:45:40,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 944. [2025-02-08 04:45:40,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 934 states have (on average 1.34796573875803) internal successors, (1259), 937 states have internal predecessors, (1259), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 04:45:40,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1273 transitions. [2025-02-08 04:45:40,637 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1273 transitions. Word has length 175 [2025-02-08 04:45:40,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:40,638 INFO L471 AbstractCegarLoop]: Abstraction has 944 states and 1273 transitions. [2025-02-08 04:45:40,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:40,638 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1273 transitions. [2025-02-08 04:45:40,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-02-08 04:45:40,639 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:40,639 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:45:40,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-08 04:45:40,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:45:40,840 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:40,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:40,840 INFO L85 PathProgramCache]: Analyzing trace with hash -235009132, now seen corresponding path program 1 times [2025-02-08 04:45:40,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:40,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226003301] [2025-02-08 04:45:40,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:40,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:40,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-02-08 04:45:40,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-02-08 04:45:40,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:40,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:41,177 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 04:45:41,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:41,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226003301] [2025-02-08 04:45:41,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226003301] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:41,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:45:41,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-08 04:45:41,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719657244] [2025-02-08 04:45:41,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:41,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 04:45:41,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:41,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 04:45:41,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-02-08 04:45:41,179 INFO L87 Difference]: Start difference. First operand 944 states and 1273 transitions. Second operand has 10 states, 10 states have (on average 16.8) internal successors, (168), 10 states have internal predecessors, (168), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:41,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:41,791 INFO L93 Difference]: Finished difference Result 1759 states and 2370 transitions. [2025-02-08 04:45:41,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 04:45:41,791 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.8) internal successors, (168), 10 states have internal predecessors, (168), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 176 [2025-02-08 04:45:41,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:41,794 INFO L225 Difference]: With dead ends: 1759 [2025-02-08 04:45:41,794 INFO L226 Difference]: Without dead ends: 962 [2025-02-08 04:45:41,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-02-08 04:45:41,795 INFO L435 NwaCegarLoop]: 434 mSDtfsCounter, 23 mSDsluCounter, 2607 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3041 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:41,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3041 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1395 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 04:45:41,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2025-02-08 04:45:41,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 950. [2025-02-08 04:45:41,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 940 states have (on average 1.3457446808510638) internal successors, (1265), 943 states have internal predecessors, (1265), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 04:45:41,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1279 transitions. [2025-02-08 04:45:41,824 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1279 transitions. Word has length 176 [2025-02-08 04:45:41,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:41,824 INFO L471 AbstractCegarLoop]: Abstraction has 950 states and 1279 transitions. [2025-02-08 04:45:41,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.8) internal successors, (168), 10 states have internal predecessors, (168), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:41,824 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1279 transitions. [2025-02-08 04:45:41,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-02-08 04:45:41,825 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:41,825 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:45:41,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-02-08 04:45:41,825 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:41,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:41,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1502452090, now seen corresponding path program 1 times [2025-02-08 04:45:41,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:41,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282086896] [2025-02-08 04:45:41,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:41,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:41,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-02-08 04:45:41,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-02-08 04:45:41,919 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:41,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:42,046 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 04:45:42,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:42,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282086896] [2025-02-08 04:45:42,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282086896] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:45:42,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371823153] [2025-02-08 04:45:42,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:42,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:45:42,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:45:42,052 INFO L229 MonitoredProcess]: Starting monitored process 11 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 04:45:42,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 04:45:42,357 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-02-08 04:45:42,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-02-08 04:45:42,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:42,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:42,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-08 04:45:42,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:45:42,610 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 04:45:42,610 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 04:45:42,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371823153] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:42,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 04:45:42,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-02-08 04:45:42,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250145495] [2025-02-08 04:45:42,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:42,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 04:45:42,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:42,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 04:45:42,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-08 04:45:42,611 INFO L87 Difference]: Start difference. First operand 950 states and 1279 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:42,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:42,905 INFO L93 Difference]: Finished difference Result 1439 states and 1934 transitions. [2025-02-08 04:45:42,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 04:45:42,906 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 176 [2025-02-08 04:45:42,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:42,909 INFO L225 Difference]: With dead ends: 1439 [2025-02-08 04:45:42,909 INFO L226 Difference]: Without dead ends: 965 [2025-02-08 04:45:42,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-08 04:45:42,910 INFO L435 NwaCegarLoop]: 433 mSDtfsCounter, 10 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:42,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2288 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 04:45:42,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2025-02-08 04:45:42,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 950. [2025-02-08 04:45:42,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 940 states have (on average 1.3457446808510638) internal successors, (1265), 943 states have internal predecessors, (1265), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 04:45:42,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1279 transitions. [2025-02-08 04:45:42,926 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1279 transitions. Word has length 176 [2025-02-08 04:45:42,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:42,927 INFO L471 AbstractCegarLoop]: Abstraction has 950 states and 1279 transitions. [2025-02-08 04:45:42,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:42,927 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1279 transitions. [2025-02-08 04:45:42,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-02-08 04:45:42,928 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:42,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:45:42,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-08 04:45:43,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-02-08 04:45:43,129 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:43,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:43,134 INFO L85 PathProgramCache]: Analyzing trace with hash 2051629634, now seen corresponding path program 1 times [2025-02-08 04:45:43,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:43,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255496713] [2025-02-08 04:45:43,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:43,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:43,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-02-08 04:45:43,240 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-02-08 04:45:43,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:43,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:43,354 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 04:45:43,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:43,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255496713] [2025-02-08 04:45:43,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255496713] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:45:43,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678445406] [2025-02-08 04:45:43,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:43,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:45:43,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:45:43,357 INFO L229 MonitoredProcess]: Starting monitored process 12 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 04:45:43,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 04:45:43,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-02-08 04:45:43,744 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-02-08 04:45:43,744 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:43,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:43,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-08 04:45:43,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:45:43,816 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 04:45:43,816 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 04:45:43,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678445406] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:43,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 04:45:43,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-02-08 04:45:43,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370510670] [2025-02-08 04:45:43,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:43,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 04:45:43,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:43,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 04:45:43,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-08 04:45:43,817 INFO L87 Difference]: Start difference. First operand 950 states and 1279 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:44,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:44,049 INFO L93 Difference]: Finished difference Result 1447 states and 1942 transitions. [2025-02-08 04:45:44,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 04:45:44,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 176 [2025-02-08 04:45:44,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:44,053 INFO L225 Difference]: With dead ends: 1447 [2025-02-08 04:45:44,053 INFO L226 Difference]: Without dead ends: 973 [2025-02-08 04:45:44,053 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-02-08 04:45:44,053 INFO L435 NwaCegarLoop]: 423 mSDtfsCounter, 39 mSDsluCounter, 1871 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:44,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 2294 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 04:45:44,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2025-02-08 04:45:44,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 941. [2025-02-08 04:45:44,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 931 states have (on average 1.3458646616541354) internal successors, (1253), 934 states have internal predecessors, (1253), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 04:45:44,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1267 transitions. [2025-02-08 04:45:44,075 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1267 transitions. Word has length 176 [2025-02-08 04:45:44,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:44,075 INFO L471 AbstractCegarLoop]: Abstraction has 941 states and 1267 transitions. [2025-02-08 04:45:44,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:44,075 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1267 transitions. [2025-02-08 04:45:44,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-02-08 04:45:44,077 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:44,077 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:45:44,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 04:45:44,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-02-08 04:45:44,277 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:44,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:44,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1106049118, now seen corresponding path program 1 times [2025-02-08 04:45:44,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:44,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457539951] [2025-02-08 04:45:44,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:44,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:44,319 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-02-08 04:45:44,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-02-08 04:45:44,409 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:44,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:44,536 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 04:45:44,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:44,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457539951] [2025-02-08 04:45:44,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457539951] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:45:44,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829153162] [2025-02-08 04:45:44,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:44,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:45:44,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:45:44,538 INFO L229 MonitoredProcess]: Starting monitored process 13 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 04:45:44,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 04:45:44,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-02-08 04:45:45,053 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-02-08 04:45:45,053 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:45,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:45,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 04:45:45,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:45:45,070 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 04:45:45,070 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 04:45:45,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829153162] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:45,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 04:45:45,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2025-02-08 04:45:45,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84874877] [2025-02-08 04:45:45,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:45,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 04:45:45,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:45,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 04:45:45,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 04:45:45,071 INFO L87 Difference]: Start difference. First operand 941 states and 1267 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:45,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:45,147 INFO L93 Difference]: Finished difference Result 1695 states and 2276 transitions. [2025-02-08 04:45:45,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 04:45:45,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 176 [2025-02-08 04:45:45,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:45,152 INFO L225 Difference]: With dead ends: 1695 [2025-02-08 04:45:45,152 INFO L226 Difference]: Without dead ends: 944 [2025-02-08 04:45:45,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 04:45:45,154 INFO L435 NwaCegarLoop]: 442 mSDtfsCounter, 0 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:45,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1322 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 04:45:45,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2025-02-08 04:45:45,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 944. [2025-02-08 04:45:45,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 933 states have (on average 1.3461950696677385) internal successors, (1256), 937 states have internal predecessors, (1256), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2025-02-08 04:45:45,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1271 transitions. [2025-02-08 04:45:45,172 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1271 transitions. Word has length 176 [2025-02-08 04:45:45,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:45,172 INFO L471 AbstractCegarLoop]: Abstraction has 944 states and 1271 transitions. [2025-02-08 04:45:45,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:45,172 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1271 transitions. [2025-02-08 04:45:45,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2025-02-08 04:45:45,174 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:45,174 INFO L218 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:45:45,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-08 04:45:45,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:45:45,375 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:45,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:45,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1943280550, now seen corresponding path program 1 times [2025-02-08 04:45:45,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:45,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510774605] [2025-02-08 04:45:45,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:45,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:45,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 178 statements into 1 equivalence classes. [2025-02-08 04:45:45,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 178 of 178 statements. [2025-02-08 04:45:45,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:45,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:45,625 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 04:45:45,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:45,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510774605] [2025-02-08 04:45:45,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510774605] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:45:45,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795160059] [2025-02-08 04:45:45,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:45,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:45:45,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:45:45,628 INFO L229 MonitoredProcess]: Starting monitored process 14 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 04:45:45,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-08 04:45:45,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 178 statements into 1 equivalence classes. [2025-02-08 04:45:46,106 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 178 of 178 statements. [2025-02-08 04:45:46,106 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:46,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:46,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 04:45:46,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:45:46,150 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 04:45:46,150 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 04:45:46,193 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 04:45:46,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795160059] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 04:45:46,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 04:45:46,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-02-08 04:45:46,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500051862] [2025-02-08 04:45:46,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 04:45:46,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 04:45:46,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:46,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 04:45:46,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2025-02-08 04:45:46,195 INFO L87 Difference]: Start difference. First operand 944 states and 1271 transitions. Second operand has 9 states, 9 states have (on average 20.333333333333332) internal successors, (183), 9 states have internal predecessors, (183), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-08 04:45:46,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:46,373 INFO L93 Difference]: Finished difference Result 1709 states and 2297 transitions. [2025-02-08 04:45:46,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 04:45:46,374 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.333333333333332) internal successors, (183), 9 states have internal predecessors, (183), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 178 [2025-02-08 04:45:46,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:46,377 INFO L225 Difference]: With dead ends: 1709 [2025-02-08 04:45:46,377 INFO L226 Difference]: Without dead ends: 955 [2025-02-08 04:45:46,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2025-02-08 04:45:46,378 INFO L435 NwaCegarLoop]: 442 mSDtfsCounter, 4 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2199 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:46,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2199 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 04:45:46,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2025-02-08 04:45:46,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 953. [2025-02-08 04:45:46,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 941 states have (on average 1.3496280552603612) internal successors, (1270), 945 states have internal predecessors, (1270), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2025-02-08 04:45:46,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1285 transitions. [2025-02-08 04:45:46,401 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1285 transitions. Word has length 178 [2025-02-08 04:45:46,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:46,402 INFO L471 AbstractCegarLoop]: Abstraction has 953 states and 1285 transitions. [2025-02-08 04:45:46,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.333333333333332) internal successors, (183), 9 states have internal predecessors, (183), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-08 04:45:46,402 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1285 transitions. [2025-02-08 04:45:46,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2025-02-08 04:45:46,403 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:46,403 INFO L218 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:45:46,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-08 04:45:46,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:45:46,603 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:46,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:46,604 INFO L85 PathProgramCache]: Analyzing trace with hash 879293858, now seen corresponding path program 2 times [2025-02-08 04:45:46,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:46,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663586488] [2025-02-08 04:45:46,604 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 04:45:46,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:46,636 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 182 statements into 2 equivalence classes. [2025-02-08 04:45:46,655 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 81 of 182 statements. [2025-02-08 04:45:46,655 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 04:45:46,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:46,854 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-02-08 04:45:46,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:46,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663586488] [2025-02-08 04:45:46,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663586488] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:46,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:45:46,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 04:45:46,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880796926] [2025-02-08 04:45:46,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:46,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 04:45:46,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:46,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 04:45:46,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-08 04:45:46,856 INFO L87 Difference]: Start difference. First operand 953 states and 1285 transitions. Second operand has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:47,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:47,246 INFO L93 Difference]: Finished difference Result 1466 states and 1970 transitions. [2025-02-08 04:45:47,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 04:45:47,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 182 [2025-02-08 04:45:47,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:47,251 INFO L225 Difference]: With dead ends: 1466 [2025-02-08 04:45:47,251 INFO L226 Difference]: Without dead ends: 1001 [2025-02-08 04:45:47,255 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-08 04:45:47,255 INFO L435 NwaCegarLoop]: 437 mSDtfsCounter, 23 mSDsluCounter, 2309 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:47,255 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2746 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 04:45:47,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2025-02-08 04:45:47,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 971. [2025-02-08 04:45:47,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 959 states have (on average 1.3461939520333681) internal successors, (1291), 963 states have internal predecessors, (1291), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2025-02-08 04:45:47,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1306 transitions. [2025-02-08 04:45:47,294 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1306 transitions. Word has length 182 [2025-02-08 04:45:47,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:47,295 INFO L471 AbstractCegarLoop]: Abstraction has 971 states and 1306 transitions. [2025-02-08 04:45:47,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:47,295 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1306 transitions. [2025-02-08 04:45:47,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2025-02-08 04:45:47,296 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:47,296 INFO L218 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:45:47,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-02-08 04:45:47,296 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:47,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:47,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1948325211, now seen corresponding path program 1 times [2025-02-08 04:45:47,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:47,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771308477] [2025-02-08 04:45:47,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:47,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:47,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 183 statements into 1 equivalence classes. [2025-02-08 04:45:47,457 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 183 of 183 statements. [2025-02-08 04:45:47,457 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:47,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:47,737 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:45:47,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:47,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771308477] [2025-02-08 04:45:47,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771308477] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:45:47,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401313441] [2025-02-08 04:45:47,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:47,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:45:47,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:45:47,740 INFO L229 MonitoredProcess]: Starting monitored process 15 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 04:45:47,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-08 04:45:48,116 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 183 statements into 1 equivalence classes. [2025-02-08 04:45:48,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 183 of 183 statements. [2025-02-08 04:45:48,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:48,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:48,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-08 04:45:48,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:45:48,401 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-08 04:45:48,401 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 04:45:48,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401313441] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:48,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 04:45:48,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2025-02-08 04:45:48,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790377335] [2025-02-08 04:45:48,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:48,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 04:45:48,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:48,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 04:45:48,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-02-08 04:45:48,402 INFO L87 Difference]: Start difference. First operand 971 states and 1306 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:48,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:48,981 INFO L93 Difference]: Finished difference Result 1802 states and 2423 transitions. [2025-02-08 04:45:48,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 04:45:48,982 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 183 [2025-02-08 04:45:48,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:48,985 INFO L225 Difference]: With dead ends: 1802 [2025-02-08 04:45:48,988 INFO L226 Difference]: Without dead ends: 981 [2025-02-08 04:45:48,989 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-02-08 04:45:48,989 INFO L435 NwaCegarLoop]: 433 mSDtfsCounter, 10 mSDsluCounter, 1594 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:48,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2027 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 04:45:48,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2025-02-08 04:45:49,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 971. [2025-02-08 04:45:49,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 959 states have (on average 1.3461939520333681) internal successors, (1291), 963 states have internal predecessors, (1291), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2025-02-08 04:45:49,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1306 transitions. [2025-02-08 04:45:49,020 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1306 transitions. Word has length 183 [2025-02-08 04:45:49,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:49,020 INFO L471 AbstractCegarLoop]: Abstraction has 971 states and 1306 transitions. [2025-02-08 04:45:49,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:49,020 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1306 transitions. [2025-02-08 04:45:49,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2025-02-08 04:45:49,021 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:49,021 INFO L218 NwaCegarLoop]: trace histogram [6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:45:49,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-08 04:45:49,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-02-08 04:45:49,222 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:49,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:49,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1562997569, now seen corresponding path program 1 times [2025-02-08 04:45:49,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:49,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600783366] [2025-02-08 04:45:49,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:49,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:49,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 183 statements into 1 equivalence classes. [2025-02-08 04:45:49,370 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 183 of 183 statements. [2025-02-08 04:45:49,371 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:49,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:49,623 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 04:45:49,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:49,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600783366] [2025-02-08 04:45:49,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600783366] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:45:49,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27379012] [2025-02-08 04:45:49,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:49,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:45:49,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:45:49,625 INFO L229 MonitoredProcess]: Starting monitored process 16 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 04:45:49,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-08 04:45:50,007 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 183 statements into 1 equivalence classes. [2025-02-08 04:45:50,149 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 183 of 183 statements. [2025-02-08 04:45:50,150 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:50,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:50,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-08 04:45:50,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:45:50,240 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 04:45:50,240 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 04:45:50,333 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-08 04:45:50,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27379012] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 04:45:50,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 04:45:50,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 6] total 18 [2025-02-08 04:45:50,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426091442] [2025-02-08 04:45:50,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 04:45:50,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 04:45:50,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:50,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 04:45:50,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2025-02-08 04:45:50,335 INFO L87 Difference]: Start difference. First operand 971 states and 1306 transitions. Second operand has 18 states, 18 states have (on average 10.722222222222221) internal successors, (193), 18 states have internal predecessors, (193), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 04:45:50,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:50,638 INFO L93 Difference]: Finished difference Result 1727 states and 2313 transitions. [2025-02-08 04:45:50,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-08 04:45:50,639 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.722222222222221) internal successors, (193), 18 states have internal predecessors, (193), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 183 [2025-02-08 04:45:50,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:50,645 INFO L225 Difference]: With dead ends: 1727 [2025-02-08 04:45:50,645 INFO L226 Difference]: Without dead ends: 814 [2025-02-08 04:45:50,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2025-02-08 04:45:50,647 INFO L435 NwaCegarLoop]: 363 mSDtfsCounter, 31 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 2166 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:50,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 2166 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 04:45:50,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2025-02-08 04:45:50,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 810. [2025-02-08 04:45:50,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 798 states have (on average 1.3157894736842106) internal successors, (1050), 802 states have internal predecessors, (1050), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2025-02-08 04:45:50,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1065 transitions. [2025-02-08 04:45:50,666 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1065 transitions. Word has length 183 [2025-02-08 04:45:50,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:50,666 INFO L471 AbstractCegarLoop]: Abstraction has 810 states and 1065 transitions. [2025-02-08 04:45:50,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.722222222222221) internal successors, (193), 18 states have internal predecessors, (193), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 04:45:50,667 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1065 transitions. [2025-02-08 04:45:50,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2025-02-08 04:45:50,667 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:50,667 INFO L218 NwaCegarLoop]: trace histogram [13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:45:50,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-08 04:45:50,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:45:50,869 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:50,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:50,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1599910573, now seen corresponding path program 2 times [2025-02-08 04:45:50,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:50,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143286929] [2025-02-08 04:45:50,870 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 04:45:50,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:50,926 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 190 statements into 2 equivalence classes. [2025-02-08 04:45:50,958 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 82 of 190 statements. [2025-02-08 04:45:50,958 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 04:45:50,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:51,330 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2025-02-08 04:45:51,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:51,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143286929] [2025-02-08 04:45:51,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143286929] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:45:51,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:45:51,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-02-08 04:45:51,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626509223] [2025-02-08 04:45:51,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:45:51,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 04:45:51,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:45:51,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 04:45:51,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2025-02-08 04:45:51,331 INFO L87 Difference]: Start difference. First operand 810 states and 1065 transitions. Second operand has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:51,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:45:51,845 INFO L93 Difference]: Finished difference Result 1389 states and 1849 transitions. [2025-02-08 04:45:51,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 04:45:51,845 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 190 [2025-02-08 04:45:51,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:45:51,851 INFO L225 Difference]: With dead ends: 1389 [2025-02-08 04:45:51,851 INFO L226 Difference]: Without dead ends: 906 [2025-02-08 04:45:51,852 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2025-02-08 04:45:51,852 INFO L435 NwaCegarLoop]: 360 mSDtfsCounter, 52 mSDsluCounter, 2788 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3148 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 04:45:51,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 3148 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 04:45:51,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2025-02-08 04:45:51,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 822. [2025-02-08 04:45:51,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 810 states have (on average 1.3148148148148149) internal successors, (1065), 814 states have internal predecessors, (1065), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2025-02-08 04:45:51,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1080 transitions. [2025-02-08 04:45:51,878 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1080 transitions. Word has length 190 [2025-02-08 04:45:51,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:45:51,878 INFO L471 AbstractCegarLoop]: Abstraction has 822 states and 1080 transitions. [2025-02-08 04:45:51,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:45:51,879 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1080 transitions. [2025-02-08 04:45:51,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2025-02-08 04:45:51,879 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:45:51,879 INFO L218 NwaCegarLoop]: trace histogram [13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:45:51,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-02-08 04:45:51,880 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:45:51,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:45:51,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1177592812, now seen corresponding path program 1 times [2025-02-08 04:45:51,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:45:51,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954710641] [2025-02-08 04:45:51,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:51,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:45:51,922 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 190 statements into 1 equivalence classes. [2025-02-08 04:45:52,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 190 of 190 statements. [2025-02-08 04:45:52,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:52,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:52,366 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 2 proven. 71 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-02-08 04:45:52,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:45:52,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954710641] [2025-02-08 04:45:52,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954710641] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:45:52,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071138557] [2025-02-08 04:45:52,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:45:52,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:45:52,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:45:52,368 INFO L229 MonitoredProcess]: Starting monitored process 17 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 04:45:52,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-08 04:45:52,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 190 statements into 1 equivalence classes. [2025-02-08 04:45:53,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 190 of 190 statements. [2025-02-08 04:45:53,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:45:53,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:45:53,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-08 04:45:53,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:45:53,665 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 59 proven. 15 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-08 04:45:53,665 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 04:46:01,893 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 2 proven. 69 refuted. 2 times theorem prover too weak. 37 trivial. 0 not checked. [2025-02-08 04:46:01,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071138557] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 04:46:01,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 04:46:01,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2025-02-08 04:46:01,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845308350] [2025-02-08 04:46:01,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 04:46:01,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-08 04:46:01,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:46:01,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-08 04:46:01,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=323, Unknown=2, NotChecked=0, Total=462 [2025-02-08 04:46:01,896 INFO L87 Difference]: Start difference. First operand 822 states and 1080 transitions. Second operand has 22 states, 22 states have (on average 8.954545454545455) internal successors, (197), 22 states have internal predecessors, (197), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 04:46:02,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:46:02,546 INFO L93 Difference]: Finished difference Result 1544 states and 2032 transitions. [2025-02-08 04:46:02,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-08 04:46:02,551 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.954545454545455) internal successors, (197), 22 states have internal predecessors, (197), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2025-02-08 04:46:02,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:46:02,553 INFO L225 Difference]: With dead ends: 1544 [2025-02-08 04:46:02,553 INFO L226 Difference]: Without dead ends: 831 [2025-02-08 04:46:02,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=346, Invalid=708, Unknown=2, NotChecked=0, Total=1056 [2025-02-08 04:46:02,561 INFO L435 NwaCegarLoop]: 376 mSDtfsCounter, 8 mSDsluCounter, 2615 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2991 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 04:46:02,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2991 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 04:46:02,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2025-02-08 04:46:02,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 829. [2025-02-08 04:46:02,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 817 states have (on average 1.3108935128518973) internal successors, (1071), 821 states have internal predecessors, (1071), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2025-02-08 04:46:02,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1086 transitions. [2025-02-08 04:46:02,602 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1086 transitions. Word has length 190 [2025-02-08 04:46:02,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:46:02,603 INFO L471 AbstractCegarLoop]: Abstraction has 829 states and 1086 transitions. [2025-02-08 04:46:02,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.954545454545455) internal successors, (197), 22 states have internal predecessors, (197), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 04:46:02,604 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1086 transitions. [2025-02-08 04:46:02,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2025-02-08 04:46:02,605 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:46:02,605 INFO L218 NwaCegarLoop]: trace histogram [20, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:46:02,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-08 04:46:02,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:46:02,806 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:46:02,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:46:02,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1067170984, now seen corresponding path program 2 times [2025-02-08 04:46:02,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:46:02,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696474654] [2025-02-08 04:46:02,807 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 04:46:02,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:46:02,880 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 197 statements into 2 equivalence classes. [2025-02-08 04:46:03,049 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 82 of 197 statements. [2025-02-08 04:46:03,049 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 04:46:03,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:46:03,546 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2025-02-08 04:46:03,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:46:03,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696474654] [2025-02-08 04:46:03,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696474654] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 04:46:03,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 04:46:03,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-02-08 04:46:03,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928124132] [2025-02-08 04:46:03,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 04:46:03,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 04:46:03,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 04:46:03,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 04:46:03,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2025-02-08 04:46:03,549 INFO L87 Difference]: Start difference. First operand 829 states and 1086 transitions. Second operand has 17 states, 17 states have (on average 9.941176470588236) internal successors, (169), 17 states have internal predecessors, (169), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:46:04,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 04:46:04,928 INFO L93 Difference]: Finished difference Result 1432 states and 1912 transitions. [2025-02-08 04:46:04,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-08 04:46:04,928 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.941176470588236) internal successors, (169), 17 states have internal predecessors, (169), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 197 [2025-02-08 04:46:04,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 04:46:04,933 INFO L225 Difference]: With dead ends: 1432 [2025-02-08 04:46:04,933 INFO L226 Difference]: Without dead ends: 937 [2025-02-08 04:46:04,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2025-02-08 04:46:04,937 INFO L435 NwaCegarLoop]: 347 mSDtfsCounter, 41 mSDsluCounter, 4542 mSDsCounter, 0 mSdLazyCounter, 1918 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 4889 SdHoareTripleChecker+Invalid, 1919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-08 04:46:04,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 4889 Invalid, 1919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1918 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-08 04:46:04,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2025-02-08 04:46:04,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 865. [2025-02-08 04:46:04,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 853 states have (on average 1.3153575615474795) internal successors, (1122), 857 states have internal predecessors, (1122), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2025-02-08 04:46:04,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1137 transitions. [2025-02-08 04:46:04,955 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1137 transitions. Word has length 197 [2025-02-08 04:46:04,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 04:46:04,955 INFO L471 AbstractCegarLoop]: Abstraction has 865 states and 1137 transitions. [2025-02-08 04:46:04,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.941176470588236) internal successors, (169), 17 states have internal predecessors, (169), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 04:46:04,956 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1137 transitions. [2025-02-08 04:46:04,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2025-02-08 04:46:04,956 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 04:46:04,957 INFO L218 NwaCegarLoop]: trace histogram [20, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 04:46:04,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2025-02-08 04:46:04,957 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 04:46:04,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 04:46:04,958 INFO L85 PathProgramCache]: Analyzing trace with hash 303626600, now seen corresponding path program 1 times [2025-02-08 04:46:04,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 04:46:04,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882362888] [2025-02-08 04:46:04,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:46:04,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 04:46:04,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 197 statements into 1 equivalence classes. [2025-02-08 04:46:05,196 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 197 of 197 statements. [2025-02-08 04:46:05,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:46:05,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:46:05,729 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 2 proven. 197 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-02-08 04:46:05,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 04:46:05,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882362888] [2025-02-08 04:46:05,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882362888] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 04:46:05,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200099622] [2025-02-08 04:46:05,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 04:46:05,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 04:46:05,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 04:46:05,733 INFO L229 MonitoredProcess]: Starting monitored process 18 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 04:46:05,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-08 04:46:06,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 197 statements into 1 equivalence classes. [2025-02-08 04:46:06,768 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 197 of 197 statements. [2025-02-08 04:46:06,768 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 04:46:06,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 04:46:06,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-02-08 04:46:06,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 04:46:19,831 WARN L286 SmtUtils]: Spent 8.43s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-02-08 04:46:28,591 WARN L286 SmtUtils]: Spent 8.21s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)