./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc 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/heap-manipulation/dll_of_dll-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 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 14:32:20,389 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 14:32:20,448 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 14:32:20,454 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 14:32:20,456 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 14:32:20,477 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 14:32:20,480 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 14:32:20,480 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 14:32:20,480 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 14:32:20,480 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 14:32:20,481 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 14:32:20,481 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 14:32:20,481 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 14:32:20,481 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 14:32:20,482 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 14:32:20,482 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 14:32:20,482 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 14:32:20,482 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 14:32:20,482 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 14:32:20,482 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 14:32:20,482 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 14:32:20,482 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 14:32:20,482 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 14:32:20,482 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 14:32:20,483 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 14:32:20,483 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 14:32:20,483 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 14:32:20,483 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 14:32:20,483 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 14:32:20,483 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 14:32:20,483 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 14:32:20,483 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 14:32:20,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 14:32:20,483 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 14:32:20,483 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 14:32:20,484 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 14:32:20,484 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 14:32:20,484 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 14:32:20,484 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 14:32:20,484 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 14:32:20,484 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 14:32:20,484 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 14:32:20,485 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 14:32:20,485 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 -> 0e14b8baad7c8f50637b16b3adcb891ef363d7563e7c4e0e74695e7b8e3d1787 [2025-02-05 14:32:20,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 14:32:20,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 14:32:20,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 14:32:20,755 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 14:32:20,755 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 14:32:20,757 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2025-02-05 14:32:21,953 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8cb0330a5/8335a3d84e43432e95f0510a6693883e/FLAG0f98aef21 [2025-02-05 14:32:22,230 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 14:32:22,230 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i [2025-02-05 14:32:22,263 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8cb0330a5/8335a3d84e43432e95f0510a6693883e/FLAG0f98aef21 [2025-02-05 14:32:22,517 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8cb0330a5/8335a3d84e43432e95f0510a6693883e [2025-02-05 14:32:22,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 14:32:22,522 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 14:32:22,523 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 14:32:22,523 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 14:32:22,527 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 14:32:22,528 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 02:32:22" (1/1) ... [2025-02-05 14:32:22,529 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67ab2be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:32:22, skipping insertion in model container [2025-02-05 14:32:22,529 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 02:32:22" (1/1) ... [2025-02-05 14:32:22,555 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 14:32:22,756 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/heap-manipulation/dll_of_dll-1.i[22634,22647] [2025-02-05 14:32:22,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 14:32:22,810 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 14:32:22,839 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/heap-manipulation/dll_of_dll-1.i[22634,22647] [2025-02-05 14:32:22,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 14:32:22,887 INFO L204 MainTranslator]: Completed translation [2025-02-05 14:32:22,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:32:22 WrapperNode [2025-02-05 14:32:22,888 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 14:32:22,889 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 14:32:22,890 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 14:32:22,890 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 14:32:22,894 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:32:22" (1/1) ... [2025-02-05 14:32:22,911 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:32:22" (1/1) ... [2025-02-05 14:32:22,933 INFO L138 Inliner]: procedures = 140, calls = 94, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 199 [2025-02-05 14:32:22,933 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 14:32:22,934 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 14:32:22,934 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 14:32:22,934 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 14:32:22,940 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:32:22" (1/1) ... [2025-02-05 14:32:22,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:32:22" (1/1) ... [2025-02-05 14:32:22,944 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:32:22" (1/1) ... [2025-02-05 14:32:22,983 INFO L175 MemorySlicer]: Split 48 memory accesses to 3 slices as follows [2, 40, 6]. 83 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 13 writes are split as follows [0, 11, 2]. [2025-02-05 14:32:22,983 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:32:22" (1/1) ... [2025-02-05 14:32:22,983 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:32:22" (1/1) ... [2025-02-05 14:32:22,997 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:32:22" (1/1) ... [2025-02-05 14:32:23,002 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:32:22" (1/1) ... [2025-02-05 14:32:23,003 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:32:22" (1/1) ... [2025-02-05 14:32:23,004 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:32:22" (1/1) ... [2025-02-05 14:32:23,010 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 14:32:23,011 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 14:32:23,011 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 14:32:23,011 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 14:32:23,017 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:32:22" (1/1) ... [2025-02-05 14:32:23,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 14:32:23,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:32:23,042 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) [2025-02-05 14:32:23,043 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 [2025-02-05 14:32:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2025-02-05 14:32:23,059 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2025-02-05 14:32:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2025-02-05 14:32:23,059 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2025-02-05 14:32:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-05 14:32:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 14:32:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2025-02-05 14:32:23,059 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2025-02-05 14:32:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-05 14:32:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-05 14:32:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-05 14:32:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-05 14:32:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2025-02-05 14:32:23,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2025-02-05 14:32:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-05 14:32:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-05 14:32:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-05 14:32:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-05 14:32:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-05 14:32:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-05 14:32:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-05 14:32:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2025-02-05 14:32:23,059 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2025-02-05 14:32:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2025-02-05 14:32:23,059 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2025-02-05 14:32:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 14:32:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 14:32:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-05 14:32:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 14:32:23,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 14:32:23,156 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 14:32:23,158 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 14:32:23,172 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L597: havoc #t~ret12.base, #t~ret12.offset; [2025-02-05 14:32:23,224 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L593: havoc #t~mem11.base, #t~mem11.offset;call ULTIMATE.dealloc(~#dll~0.base, ~#dll~0.offset);havoc ~#dll~0.base, ~#dll~0.offset; [2025-02-05 14:32:23,360 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L641: havoc dll_create_master_#t~ret21#1.base, dll_create_master_#t~ret21#1.offset; [2025-02-05 14:32:23,376 INFO L? ?]: Removed 74 outVars from TransFormulas that were not future-live. [2025-02-05 14:32:23,376 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 14:32:23,384 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 14:32:23,384 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 14:32:23,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 02:32:23 BoogieIcfgContainer [2025-02-05 14:32:23,384 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 14:32:23,386 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 14:32:23,386 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 14:32:23,389 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 14:32:23,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 02:32:22" (1/3) ... [2025-02-05 14:32:23,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f37913f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 02:32:23, skipping insertion in model container [2025-02-05 14:32:23,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:32:22" (2/3) ... [2025-02-05 14:32:23,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f37913f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 02:32:23, skipping insertion in model container [2025-02-05 14:32:23,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 02:32:23" (3/3) ... [2025-02-05 14:32:23,391 INFO L128 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2025-02-05 14:32:23,400 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 14:32:23,401 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG dll_of_dll-1.i that has 7 procedures, 129 locations, 1 initial locations, 24 loop locations, and 1 error locations. [2025-02-05 14:32:23,431 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 14:32:23,438 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;@4f327a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 14:32:23,439 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 14:32:23,441 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 97 states have (on average 1.6082474226804124) internal successors, (156), 117 states have internal predecessors, (156), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2025-02-05 14:32:23,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-05 14:32:23,446 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:32:23,446 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2025-02-05 14:32:23,446 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:32:23,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:32:23,449 INFO L85 PathProgramCache]: Analyzing trace with hash -10315666, now seen corresponding path program 1 times [2025-02-05 14:32:23,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:32:23,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461987224] [2025-02-05 14:32:23,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:32:23,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:32:23,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-05 14:32:23,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-05 14:32:23,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:32:23,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:32:23,706 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 14:32:23,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:32:23,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461987224] [2025-02-05 14:32:23,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461987224] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:32:23,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919746355] [2025-02-05 14:32:23,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:32:23,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:32:23,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:32:23,713 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) [2025-02-05 14:32:23,715 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 [2025-02-05 14:32:23,797 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-05 14:32:23,839 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-05 14:32:23,839 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:32:23,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:32:23,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-05 14:32:23,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:32:23,856 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-05 14:32:23,857 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 14:32:23,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919746355] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 14:32:23,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 14:32:23,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-05 14:32:23,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973850869] [2025-02-05 14:32:23,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 14:32:23,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 14:32:23,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:32:23,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 14:32:23,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 14:32:23,873 INFO L87 Difference]: Start difference. First operand has 129 states, 97 states have (on average 1.6082474226804124) internal successors, (156), 117 states have internal predecessors, (156), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 14:32:23,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:32:23,893 INFO L93 Difference]: Finished difference Result 253 states and 413 transitions. [2025-02-05 14:32:23,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 14:32:23,895 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2025-02-05 14:32:23,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:32:23,899 INFO L225 Difference]: With dead ends: 253 [2025-02-05 14:32:23,900 INFO L226 Difference]: Without dead ends: 121 [2025-02-05 14:32:23,902 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 14:32:23,903 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 14:32:23,904 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 14:32:23,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2025-02-05 14:32:23,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2025-02-05 14:32:23,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 91 states have (on average 1.2747252747252746) internal successors, (116), 109 states have internal predecessors, (116), 24 states have call successors, (24), 6 states have call predecessors, (24), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2025-02-05 14:32:23,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 150 transitions. [2025-02-05 14:32:23,933 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 150 transitions. Word has length 38 [2025-02-05 14:32:23,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:32:23,934 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 150 transitions. [2025-02-05 14:32:23,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 14:32:23,935 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 150 transitions. [2025-02-05 14:32:23,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-05 14:32:23,936 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:32:23,936 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2025-02-05 14:32:23,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 14:32:24,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-02-05 14:32:24,137 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:32:24,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:32:24,139 INFO L85 PathProgramCache]: Analyzing trace with hash -2021818514, now seen corresponding path program 1 times [2025-02-05 14:32:24,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:32:24,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735980253] [2025-02-05 14:32:24,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:32:24,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:32:24,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-05 14:32:24,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-05 14:32:24,195 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:32:24,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:32:24,776 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:32:24,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:32:24,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735980253] [2025-02-05 14:32:24,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735980253] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:32:24,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896162408] [2025-02-05 14:32:24,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:32:24,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:32:24,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:32:24,779 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) [2025-02-05 14:32:24,780 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 [2025-02-05 14:32:24,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-05 14:32:24,891 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-05 14:32:24,891 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:32:24,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:32:24,896 INFO L256 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-05 14:32:24,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:32:24,989 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 14:32:24,990 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 14:32:24,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896162408] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 14:32:24,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 14:32:24,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2025-02-05 14:32:24,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256020975] [2025-02-05 14:32:24,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 14:32:24,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 14:32:24,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:32:24,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 14:32:24,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-02-05 14:32:24,994 INFO L87 Difference]: Start difference. First operand 121 states and 150 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 14:32:25,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:32:25,141 INFO L93 Difference]: Finished difference Result 252 states and 326 transitions. [2025-02-05 14:32:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 14:32:25,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2025-02-05 14:32:25,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:32:25,143 INFO L225 Difference]: With dead ends: 252 [2025-02-05 14:32:25,144 INFO L226 Difference]: Without dead ends: 134 [2025-02-05 14:32:25,145 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-02-05 14:32:25,146 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 14 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:32:25,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 558 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:32:25,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2025-02-05 14:32:25,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2025-02-05 14:32:25,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 99 states have (on average 1.2626262626262625) internal successors, (125), 117 states have internal predecessors, (125), 27 states have call successors, (27), 8 states have call predecessors, (27), 7 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-05 14:32:25,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 165 transitions. [2025-02-05 14:32:25,166 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 165 transitions. Word has length 39 [2025-02-05 14:32:25,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:32:25,167 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 165 transitions. [2025-02-05 14:32:25,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 14:32:25,167 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 165 transitions. [2025-02-05 14:32:25,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-02-05 14:32:25,169 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:32:25,169 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:32:25,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-05 14:32:25,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:32:25,373 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:32:25,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:32:25,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1637650286, now seen corresponding path program 1 times [2025-02-05 14:32:25,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:32:25,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215692985] [2025-02-05 14:32:25,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:32:25,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:32:25,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-02-05 14:32:25,423 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-02-05 14:32:25,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:32:25,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:32:26,212 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-02-05 14:32:26,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:32:26,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215692985] [2025-02-05 14:32:26,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215692985] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:32:26,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338751943] [2025-02-05 14:32:26,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:32:26,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:32:26,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:32:26,218 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) [2025-02-05 14:32:26,225 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 [2025-02-05 14:32:26,354 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-02-05 14:32:26,468 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-02-05 14:32:26,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:32:26,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:32:26,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-02-05 14:32:26,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:32:26,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-05 14:32:26,630 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 16 treesize of output 8 [2025-02-05 14:32:26,722 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-02-05 14:32:26,723 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:32:26,949 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 30 treesize of output 26 [2025-02-05 14:32:26,958 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 30 treesize of output 26 [2025-02-05 14:32:27,063 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-02-05 14:32:27,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338751943] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:32:27,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:32:27,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 15] total 24 [2025-02-05 14:32:27,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014441683] [2025-02-05 14:32:27,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:32:27,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-05 14:32:27,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:32:27,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-05 14:32:27,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2025-02-05 14:32:27,065 INFO L87 Difference]: Start difference. First operand 134 states and 165 transitions. Second operand has 24 states, 21 states have (on average 3.142857142857143) internal successors, (66), 20 states have internal predecessors, (66), 8 states have call successors, (15), 4 states have call predecessors, (15), 7 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2025-02-05 14:32:28,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:32:28,223 INFO L93 Difference]: Finished difference Result 343 states and 426 transitions. [2025-02-05 14:32:28,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-05 14:32:28,223 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 3.142857142857143) internal successors, (66), 20 states have internal predecessors, (66), 8 states have call successors, (15), 4 states have call predecessors, (15), 7 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) Word has length 111 [2025-02-05 14:32:28,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:32:28,225 INFO L225 Difference]: With dead ends: 343 [2025-02-05 14:32:28,225 INFO L226 Difference]: Without dead ends: 205 [2025-02-05 14:32:28,226 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=192, Invalid=1614, Unknown=0, NotChecked=0, Total=1806 [2025-02-05 14:32:28,226 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 176 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 2074 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-05 14:32:28,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 2074 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1610 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-05 14:32:28,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2025-02-05 14:32:28,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 173. [2025-02-05 14:32:28,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 133 states have (on average 1.2330827067669172) internal successors, (164), 150 states have internal predecessors, (164), 29 states have call successors, (29), 11 states have call predecessors, (29), 10 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-05 14:32:28,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 208 transitions. [2025-02-05 14:32:28,237 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 208 transitions. Word has length 111 [2025-02-05 14:32:28,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:32:28,237 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 208 transitions. [2025-02-05 14:32:28,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 3.142857142857143) internal successors, (66), 20 states have internal predecessors, (66), 8 states have call successors, (15), 4 states have call predecessors, (15), 7 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2025-02-05 14:32:28,238 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 208 transitions. [2025-02-05 14:32:28,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-02-05 14:32:28,239 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:32:28,240 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:32:28,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-05 14:32:28,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:32:28,444 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:32:28,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:32:28,445 INFO L85 PathProgramCache]: Analyzing trace with hash -313273545, now seen corresponding path program 1 times [2025-02-05 14:32:28,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:32:28,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127260512] [2025-02-05 14:32:28,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:32:28,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:32:28,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-02-05 14:32:28,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-02-05 14:32:28,486 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:32:28,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:32:28,987 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 12 proven. 54 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2025-02-05 14:32:28,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:32:28,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127260512] [2025-02-05 14:32:28,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127260512] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:32:28,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963760242] [2025-02-05 14:32:28,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:32:28,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:32:28,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:32:28,995 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) [2025-02-05 14:32:28,996 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 [2025-02-05 14:32:29,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-02-05 14:32:29,218 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-02-05 14:32:29,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:32:29,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:32:29,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 1082 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-02-05 14:32:29,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:32:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-02-05 14:32:29,282 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 14:32:29,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963760242] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 14:32:29,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 14:32:29,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 10 [2025-02-05 14:32:29,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554176674] [2025-02-05 14:32:29,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 14:32:29,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 14:32:29,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:32:29,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 14:32:29,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-05 14:32:29,284 INFO L87 Difference]: Start difference. First operand 173 states and 208 transitions. Second operand has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2025-02-05 14:32:29,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:32:29,516 INFO L93 Difference]: Finished difference Result 336 states and 412 transitions. [2025-02-05 14:32:29,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 14:32:29,517 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 114 [2025-02-05 14:32:29,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:32:29,518 INFO L225 Difference]: With dead ends: 336 [2025-02-05 14:32:29,518 INFO L226 Difference]: Without dead ends: 177 [2025-02-05 14:32:29,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2025-02-05 14:32:29,519 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 49 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 14:32:29,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 507 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 14:32:29,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2025-02-05 14:32:29,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2025-02-05 14:32:29,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 136 states have (on average 1.2279411764705883) internal successors, (167), 154 states have internal predecessors, (167), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (17), 13 states have call predecessors, (17), 15 states have call successors, (17) [2025-02-05 14:32:29,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 213 transitions. [2025-02-05 14:32:29,529 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 213 transitions. Word has length 114 [2025-02-05 14:32:29,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:32:29,529 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 213 transitions. [2025-02-05 14:32:29,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2025-02-05 14:32:29,529 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 213 transitions. [2025-02-05 14:32:29,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-02-05 14:32:29,531 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:32:29,532 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:32:29,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-05 14:32:29,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:32:29,736 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:32:29,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:32:29,737 INFO L85 PathProgramCache]: Analyzing trace with hash -2028264169, now seen corresponding path program 1 times [2025-02-05 14:32:29,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:32:29,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35235971] [2025-02-05 14:32:29,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:32:29,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:32:29,762 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-02-05 14:32:29,861 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-02-05 14:32:29,861 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:32:29,861 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:32:35,717 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 50 proven. 74 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 14:32:35,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:32:35,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35235971] [2025-02-05 14:32:35,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35235971] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:32:35,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768602578] [2025-02-05 14:32:35,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:32:35,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:32:35,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:32:35,720 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) [2025-02-05 14:32:35,722 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 [2025-02-05 14:32:35,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-02-05 14:32:35,959 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-02-05 14:32:35,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:32:35,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:32:35,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 196 conjuncts are in the unsatisfiable core [2025-02-05 14:32:35,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:32:36,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-05 14:32:36,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-05 14:32:36,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2025-02-05 14:32:36,667 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 [2025-02-05 14:32:36,783 INFO L349 Elim1Store]: treesize reduction 33, result has 38.9 percent of original size [2025-02-05 14:32:36,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 29 [2025-02-05 14:32:36,892 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 29 treesize of output 21 [2025-02-05 14:32:36,896 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 21 treesize of output 17 [2025-02-05 14:32:36,901 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 17 treesize of output 13 [2025-02-05 14:32:36,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2025-02-05 14:32:37,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-05 14:32:37,454 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 66 treesize of output 42 [2025-02-05 14:32:37,471 INFO L349 Elim1Store]: treesize reduction 21, result has 4.5 percent of original size [2025-02-05 14:32:37,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 54 [2025-02-05 14:32:37,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 16 [2025-02-05 14:32:50,555 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 134 treesize of output 86 [2025-02-05 14:33:03,909 INFO L349 Elim1Store]: treesize reduction 105, result has 16.0 percent of original size [2025-02-05 14:33:03,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 111 treesize of output 145 [2025-02-05 14:33:04,041 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 14:33:04,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 115 [2025-02-05 14:33:05,907 INFO L349 Elim1Store]: treesize reduction 98, result has 4.9 percent of original size [2025-02-05 14:33:05,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 67 treesize of output 43 [2025-02-05 14:33:05,962 INFO L349 Elim1Store]: treesize reduction 109, result has 0.9 percent of original size [2025-02-05 14:33:05,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 67 treesize of output 1 [2025-02-05 14:33:06,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 41 [2025-02-05 14:33:06,368 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 [2025-02-05 14:33:06,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-05 14:33:06,842 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 [2025-02-05 14:33:06,847 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 24 treesize of output 16 [2025-02-05 14:33:07,042 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 29 treesize of output 17 [2025-02-05 14:33:07,921 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 16 treesize of output 8 [2025-02-05 14:33:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 82 proven. 38 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-05 14:33:07,924 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:33:11,707 INFO L349 Elim1Store]: treesize reduction 21, result has 67.2 percent of original size [2025-02-05 14:33:11,708 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 57 [2025-02-05 14:33:11,717 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-05 14:33:11,718 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-05 14:33:11,724 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 37 treesize of output 29 [2025-02-05 14:33:11,733 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-05 14:33:11,742 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-02-05 14:33:11,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 47 [2025-02-05 14:33:13,663 INFO L349 Elim1Store]: treesize reduction 263, result has 46.2 percent of original size [2025-02-05 14:33:13,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 20910 treesize of output 15142 [2025-02-05 14:33:13,727 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-05 14:33:13,729 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-05 14:33:13,908 INFO L349 Elim1Store]: treesize reduction 116, result has 49.1 percent of original size [2025-02-05 14:33:13,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 1033 treesize of output 1084 [2025-02-05 14:33:13,983 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 14:33:13,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 989 treesize of output 1009 [2025-02-05 14:33:14,006 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 1308 treesize of output 1228 [2025-02-05 14:33:14,040 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 1883 treesize of output 1727 [2025-02-05 14:33:14,127 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 14:33:14,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1246 treesize of output 1247 [2025-02-05 14:33:14,182 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 14:33:14,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1238 treesize of output 1231 [2025-02-05 14:33:14,228 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-05 14:33:14,250 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-02-05 14:33:14,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 47 [2025-02-05 14:33:16,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2025-02-05 14:33:16,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 14:33:16,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 61 [2025-02-05 14:33:16,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2025-02-05 14:33:16,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2025-02-05 14:33:17,213 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 [2025-02-05 14:33:17,226 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 9 treesize of output 5 [2025-02-05 14:33:17,484 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 77 treesize of output 73 [2025-02-05 14:33:17,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 14:33:17,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 14:33:17,514 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 58 treesize of output 54 [2025-02-05 14:33:19,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768602578] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:33:19,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-05 14:33:19,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 41] total 82 [2025-02-05 14:33:19,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274329621] [2025-02-05 14:33:19,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-05 14:33:19,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2025-02-05 14:33:19,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:33:19,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2025-02-05 14:33:19,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=7323, Unknown=7, NotChecked=0, Total=7656 [2025-02-05 14:33:19,168 INFO L87 Difference]: Start difference. First operand 177 states and 213 transitions. Second operand has 82 states, 70 states have (on average 2.085714285714286) internal successors, (146), 67 states have internal predecessors, (146), 21 states have call successors, (24), 9 states have call predecessors, (24), 19 states have return successors, (26), 22 states have call predecessors, (26), 18 states have call successors, (26) [2025-02-05 14:33:31,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-05 14:33:41,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-05 14:33:55,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]