./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_strcpy_original-2.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/array-examples/standard_strcpy_original-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d1a303ac3a0660bf920920173d22fca6c20b09d575ad3b8f2f9d91205d4f1f6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 09:59:08,990 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 09:59:09,045 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 09:59:09,050 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 09:59:09,053 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 09:59:09,076 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 09:59:09,080 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 09:59:09,080 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 09:59:09,080 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 09:59:09,080 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 09:59:09,080 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 09:59:09,080 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 09:59:09,080 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 09:59:09,080 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 09:59:09,081 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 09:59:09,081 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 09:59:09,081 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 09:59:09,081 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 09:59:09,081 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 09:59:09,081 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 09:59:09,081 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 09:59:09,081 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 09:59:09,081 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 09:59:09,081 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 09:59:09,081 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 09:59:09,081 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 09:59:09,081 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 09:59:09,081 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 09:59:09,081 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 09:59:09,081 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 09:59:09,081 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 09:59:09,081 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 09:59:09,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 09:59:09,082 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 09:59:09,082 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 09:59:09,082 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 09:59:09,082 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 09:59:09,082 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 09:59:09,082 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 09:59:09,082 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 09:59:09,082 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 09:59:09,082 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 09:59:09,082 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 09:59:09,082 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 -> 1d1a303ac3a0660bf920920173d22fca6c20b09d575ad3b8f2f9d91205d4f1f6 [2025-02-05 09:59:09,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 09:59:09,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 09:59:09,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 09:59:09,463 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 09:59:09,463 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 09:59:09,464 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_strcpy_original-2.i [2025-02-05 09:59:10,530 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/98977f812/fa48fa01bc4444c2bd6b4ad1c0b0c7cc/FLAG008d10eb3 [2025-02-05 09:59:10,728 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 09:59:10,732 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/standard_strcpy_original-2.i [2025-02-05 09:59:10,737 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/98977f812/fa48fa01bc4444c2bd6b4ad1c0b0c7cc/FLAG008d10eb3 [2025-02-05 09:59:11,085 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/98977f812/fa48fa01bc4444c2bd6b4ad1c0b0c7cc [2025-02-05 09:59:11,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 09:59:11,088 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 09:59:11,088 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 09:59:11,089 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 09:59:11,091 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 09:59:11,092 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 09:59:11" (1/1) ... [2025-02-05 09:59:11,092 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2959b12a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:11, skipping insertion in model container [2025-02-05 09:59:11,092 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 09:59:11" (1/1) ... [2025-02-05 09:59:11,101 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 09:59:11,180 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/array-examples/standard_strcpy_original-2.i[896,909] [2025-02-05 09:59:11,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 09:59:11,194 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 09:59:11,201 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/array-examples/standard_strcpy_original-2.i[896,909] [2025-02-05 09:59:11,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 09:59:11,214 INFO L204 MainTranslator]: Completed translation [2025-02-05 09:59:11,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:11 WrapperNode [2025-02-05 09:59:11,215 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 09:59:11,215 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 09:59:11,215 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 09:59:11,216 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 09:59:11,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:11" (1/1) ... [2025-02-05 09:59:11,224 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:11" (1/1) ... [2025-02-05 09:59:11,233 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2025-02-05 09:59:11,234 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 09:59:11,234 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 09:59:11,234 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 09:59:11,234 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 09:59:11,240 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:11" (1/1) ... [2025-02-05 09:59:11,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:11" (1/1) ... [2025-02-05 09:59:11,241 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:11" (1/1) ... [2025-02-05 09:59:11,251 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 2, 5]. 56 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2025-02-05 09:59:11,251 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:11" (1/1) ... [2025-02-05 09:59:11,251 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:11" (1/1) ... [2025-02-05 09:59:11,254 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:11" (1/1) ... [2025-02-05 09:59:11,255 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:11" (1/1) ... [2025-02-05 09:59:11,255 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:11" (1/1) ... [2025-02-05 09:59:11,256 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:11" (1/1) ... [2025-02-05 09:59:11,257 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 09:59:11,257 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 09:59:11,258 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 09:59:11,258 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 09:59:11,258 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:11" (1/1) ... [2025-02-05 09:59:11,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 09:59:11,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:59:11,282 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 09:59:11,287 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 09:59:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 09:59:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 09:59:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 09:59:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-05 09:59:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-05 09:59:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-05 09:59:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-05 09:59:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-05 09:59:11,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 09:59:11,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 09:59:11,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-05 09:59:11,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-05 09:59:11,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-05 09:59:11,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-05 09:59:11,342 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 09:59:11,343 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 09:59:11,434 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L18: call ULTIMATE.dealloc(main_~#src~0#1.base, main_~#src~0#1.offset);havoc main_~#src~0#1.base, main_~#src~0#1.offset;call ULTIMATE.dealloc(main_~#dst~0#1.base, main_~#dst~0#1.offset);havoc main_~#dst~0#1.base, main_~#dst~0#1.offset; [2025-02-05 09:59:11,443 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-02-05 09:59:11,444 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 09:59:11,449 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 09:59:11,449 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 09:59:11,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 09:59:11 BoogieIcfgContainer [2025-02-05 09:59:11,450 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 09:59:11,451 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 09:59:11,451 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 09:59:11,454 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 09:59:11,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 09:59:11" (1/3) ... [2025-02-05 09:59:11,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657972d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 09:59:11, skipping insertion in model container [2025-02-05 09:59:11,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:59:11" (2/3) ... [2025-02-05 09:59:11,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657972d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 09:59:11, skipping insertion in model container [2025-02-05 09:59:11,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 09:59:11" (3/3) ... [2025-02-05 09:59:11,456 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_strcpy_original-2.i [2025-02-05 09:59:11,464 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 09:59:11,465 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_strcpy_original-2.i that has 1 procedures, 18 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-02-05 09:59:11,498 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 09:59:11,505 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;@3ac2e756, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 09:59:11,506 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 09:59:11,508 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:11,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-05 09:59:11,512 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:59:11,513 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:59:11,513 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:59:11,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:59:11,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1245051366, now seen corresponding path program 1 times [2025-02-05 09:59:11,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:59:11,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024746870] [2025-02-05 09:59:11,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:59:11,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:59:11,566 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-05 09:59:11,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-05 09:59:11,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:59:11,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:59:11,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 09:59:11,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:59:11,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024746870] [2025-02-05 09:59:11,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024746870] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 09:59:11,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 09:59:11,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 09:59:11,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958491205] [2025-02-05 09:59:11,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 09:59:11,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 09:59:11,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:59:11,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 09:59:11,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 09:59:11,654 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:11,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:59:11,676 INFO L93 Difference]: Finished difference Result 34 states and 48 transitions. [2025-02-05 09:59:11,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 09:59:11,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-05 09:59:11,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:59:11,684 INFO L225 Difference]: With dead ends: 34 [2025-02-05 09:59:11,684 INFO L226 Difference]: Without dead ends: 15 [2025-02-05 09:59:11,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 09:59:11,688 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:59:11,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:59:11,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-02-05 09:59:11,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2025-02-05 09:59:11,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:11,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2025-02-05 09:59:11,705 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 10 [2025-02-05 09:59:11,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:59:11,706 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2025-02-05 09:59:11,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:11,706 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2025-02-05 09:59:11,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-05 09:59:11,706 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:59:11,706 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:59:11,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 09:59:11,707 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:59:11,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:59:11,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1262915407, now seen corresponding path program 1 times [2025-02-05 09:59:11,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:59:11,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226941348] [2025-02-05 09:59:11,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:59:11,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:59:11,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-05 09:59:11,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-05 09:59:11,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:59:11,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:59:11,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 09:59:11,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:59:11,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226941348] [2025-02-05 09:59:11,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226941348] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:59:11,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089961591] [2025-02-05 09:59:11,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:59:11,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:59:11,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:59:11,774 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 09:59:11,776 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 09:59:11,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-05 09:59:11,822 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-05 09:59:11,822 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:59:11,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:59:11,823 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 09:59:11,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:59:11,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 09:59:11,863 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:59:11,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 09:59:11,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089961591] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:59:11,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:59:11,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-05 09:59:11,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776647786] [2025-02-05 09:59:11,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:59:11,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 09:59:11,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:59:11,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 09:59:11,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-05 09:59:11,897 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:11,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:59:11,915 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2025-02-05 09:59:11,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 09:59:11,915 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-02-05 09:59:11,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:59:11,916 INFO L225 Difference]: With dead ends: 29 [2025-02-05 09:59:11,916 INFO L226 Difference]: Without dead ends: 18 [2025-02-05 09:59:11,916 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-05 09:59:11,917 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:59:11,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:59:11,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-02-05 09:59:11,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2025-02-05 09:59:11,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:11,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2025-02-05 09:59:11,922 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 13 [2025-02-05 09:59:11,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:59:11,922 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2025-02-05 09:59:11,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:11,924 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2025-02-05 09:59:11,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-05 09:59:11,924 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:59:11,924 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:59:11,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-05 09:59:12,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:59:12,125 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:59:12,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:59:12,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1700437417, now seen corresponding path program 2 times [2025-02-05 09:59:12,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:59:12,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028887860] [2025-02-05 09:59:12,128 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 09:59:12,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:59:12,154 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-05 09:59:12,174 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 16 statements. [2025-02-05 09:59:12,174 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-05 09:59:12,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:59:12,380 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 09:59:12,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:59:12,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028887860] [2025-02-05 09:59:12,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028887860] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 09:59:12,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 09:59:12,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 09:59:12,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880988434] [2025-02-05 09:59:12,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 09:59:12,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 09:59:12,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:59:12,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 09:59:12,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-02-05 09:59:12,381 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:12,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:59:12,439 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2025-02-05 09:59:12,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 09:59:12,439 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-02-05 09:59:12,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:59:12,440 INFO L225 Difference]: With dead ends: 37 [2025-02-05 09:59:12,440 INFO L226 Difference]: Without dead ends: 21 [2025-02-05 09:59:12,440 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2025-02-05 09:59:12,441 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 13 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:59:12,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:59:12,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-02-05 09:59:12,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2025-02-05 09:59:12,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:12,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2025-02-05 09:59:12,444 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 16 [2025-02-05 09:59:12,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:59:12,444 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2025-02-05 09:59:12,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:12,444 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2025-02-05 09:59:12,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-05 09:59:12,444 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:59:12,444 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:59:12,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 09:59:12,445 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:59:12,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:59:12,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1467510538, now seen corresponding path program 1 times [2025-02-05 09:59:12,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:59:12,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250291620] [2025-02-05 09:59:12,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:59:12,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:59:12,454 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-05 09:59:12,460 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-05 09:59:12,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:59:12,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:59:12,543 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 09:59:12,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:59:12,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250291620] [2025-02-05 09:59:12,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250291620] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:59:12,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654566563] [2025-02-05 09:59:12,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:59:12,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:59:12,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:59:12,546 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 09:59:12,547 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 09:59:12,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-05 09:59:12,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-05 09:59:12,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:59:12,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:59:12,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 09:59:12,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:59:12,610 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 09:59:12,610 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:59:12,659 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 09:59:12,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654566563] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:59:12,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:59:12,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-05 09:59:12,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120367956] [2025-02-05 09:59:12,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:59:12,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-05 09:59:12,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:59:12,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-05 09:59:12,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-05 09:59:12,660 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:12,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:59:12,674 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2025-02-05 09:59:12,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-05 09:59:12,674 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-02-05 09:59:12,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:59:12,675 INFO L225 Difference]: With dead ends: 41 [2025-02-05 09:59:12,675 INFO L226 Difference]: Without dead ends: 27 [2025-02-05 09:59:12,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-05 09:59:12,676 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:59:12,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:59:12,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-02-05 09:59:12,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2025-02-05 09:59:12,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:12,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2025-02-05 09:59:12,679 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 19 [2025-02-05 09:59:12,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:59:12,679 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2025-02-05 09:59:12,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:12,680 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2025-02-05 09:59:12,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-05 09:59:12,680 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:59:12,680 INFO L218 NwaCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:59:12,685 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 [2025-02-05 09:59:12,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:59:12,881 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:59:12,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:59:12,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1524086582, now seen corresponding path program 2 times [2025-02-05 09:59:12,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:59:12,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095494205] [2025-02-05 09:59:12,882 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 09:59:12,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:59:12,900 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-02-05 09:59:12,909 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-02-05 09:59:12,909 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 09:59:12,909 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:59:13,063 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 09:59:13,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:59:13,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095494205] [2025-02-05 09:59:13,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095494205] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:59:13,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915205750] [2025-02-05 09:59:13,064 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 09:59:13,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:59:13,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:59:13,066 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 09:59:13,067 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 09:59:13,123 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-02-05 09:59:13,145 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-02-05 09:59:13,145 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 09:59:13,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:59:13,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-05 09:59:13,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:59:13,180 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 09:59:13,182 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:59:13,365 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 09:59:13,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915205750] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:59:13,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:59:13,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-02-05 09:59:13,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145625381] [2025-02-05 09:59:13,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:59:13,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-05 09:59:13,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:59:13,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-05 09:59:13,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-05 09:59:13,368 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:13,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:59:13,391 INFO L93 Difference]: Finished difference Result 53 states and 72 transitions. [2025-02-05 09:59:13,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-05 09:59:13,392 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-02-05 09:59:13,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:59:13,392 INFO L225 Difference]: With dead ends: 53 [2025-02-05 09:59:13,392 INFO L226 Difference]: Without dead ends: 39 [2025-02-05 09:59:13,393 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-05 09:59:13,393 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:59:13,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:59:13,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2025-02-05 09:59:13,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2025-02-05 09:59:13,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:13,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2025-02-05 09:59:13,398 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 25 [2025-02-05 09:59:13,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:59:13,398 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2025-02-05 09:59:13,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:13,398 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2025-02-05 09:59:13,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-02-05 09:59:13,399 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:59:13,399 INFO L218 NwaCegarLoop]: trace histogram [22, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:59:13,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-05 09:59:13,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:59:13,600 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:59:13,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:59:13,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1166734262, now seen corresponding path program 3 times [2025-02-05 09:59:13,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:59:13,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91093354] [2025-02-05 09:59:13,601 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 09:59:13,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:59:13,623 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 12 equivalence classes. [2025-02-05 09:59:13,632 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 37 statements. [2025-02-05 09:59:13,633 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-05 09:59:13,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:59:13,836 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2025-02-05 09:59:13,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:59:13,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91093354] [2025-02-05 09:59:13,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91093354] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:59:13,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200994969] [2025-02-05 09:59:13,837 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 09:59:13,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:59:13,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:59:13,840 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 09:59:13,841 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 09:59:13,906 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 12 equivalence classes. [2025-02-05 09:59:13,916 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 37 statements. [2025-02-05 09:59:13,916 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-05 09:59:13,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:59:13,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-05 09:59:13,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:59:14,046 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 11 [2025-02-05 09:59:14,096 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2025-02-05 09:59:14,096 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:59:14,135 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-05 09:59:14,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 26 treesize of output 18 [2025-02-05 09:59:14,172 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2025-02-05 09:59:14,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200994969] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:59:14,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:59:14,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-02-05 09:59:14,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843095521] [2025-02-05 09:59:14,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:59:14,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-05 09:59:14,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:59:14,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-05 09:59:14,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-02-05 09:59:14,173 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:14,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:59:14,225 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2025-02-05 09:59:14,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 09:59:14,226 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2025-02-05 09:59:14,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:59:14,227 INFO L225 Difference]: With dead ends: 46 [2025-02-05 09:59:14,228 INFO L226 Difference]: Without dead ends: 44 [2025-02-05 09:59:14,229 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-02-05 09:59:14,229 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 22 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:59:14,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 45 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:59:14,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-02-05 09:59:14,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2025-02-05 09:59:14,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 42 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:14,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2025-02-05 09:59:14,255 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 37 [2025-02-05 09:59:14,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:59:14,255 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2025-02-05 09:59:14,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:14,255 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2025-02-05 09:59:14,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-05 09:59:14,256 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:59:14,256 INFO L218 NwaCegarLoop]: trace histogram [22, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:59:14,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-05 09:59:14,456 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,SelfDestructingSolverStorable5 [2025-02-05 09:59:14,456 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:59:14,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:59:14,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1287852198, now seen corresponding path program 1 times [2025-02-05 09:59:14,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:59:14,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824278426] [2025-02-05 09:59:14,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:59:14,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:59:14,472 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-05 09:59:14,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-05 09:59:14,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:59:14,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:59:14,931 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-05 09:59:14,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:59:14,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824278426] [2025-02-05 09:59:14,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824278426] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:59:14,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013087703] [2025-02-05 09:59:14,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:59:14,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:59:14,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:59:14,933 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 09:59:14,935 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 09:59:14,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-05 09:59:15,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-05 09:59:15,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:59:15,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:59:15,018 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-05 09:59:15,019 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:59:15,051 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-05 09:59:15,052 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:59:15,651 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-05 09:59:15,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013087703] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:59:15,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:59:15,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2025-02-05 09:59:15,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538624236] [2025-02-05 09:59:15,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:59:15,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-02-05 09:59:15,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:59:15,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-02-05 09:59:15,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-02-05 09:59:15,654 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 49 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 49 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:15,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:59:15,707 INFO L93 Difference]: Finished difference Result 85 states and 118 transitions. [2025-02-05 09:59:15,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-02-05 09:59:15,708 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 49 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2025-02-05 09:59:15,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:59:15,708 INFO L225 Difference]: With dead ends: 85 [2025-02-05 09:59:15,708 INFO L226 Difference]: Without dead ends: 67 [2025-02-05 09:59:15,709 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-02-05 09:59:15,710 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:59:15,710 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:59:15,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2025-02-05 09:59:15,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2025-02-05 09:59:15,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 66 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:15,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2025-02-05 09:59:15,716 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 42 [2025-02-05 09:59:15,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:59:15,717 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2025-02-05 09:59:15,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 49 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:15,717 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2025-02-05 09:59:15,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-02-05 09:59:15,718 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:59:15,718 INFO L218 NwaCegarLoop]: trace histogram [46, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:59:15,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-05 09:59:15,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:59:15,919 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:59:15,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:59:15,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1013557670, now seen corresponding path program 2 times [2025-02-05 09:59:15,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:59:15,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282098998] [2025-02-05 09:59:15,919 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 09:59:15,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:59:15,940 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 66 statements into 2 equivalence classes. [2025-02-05 09:59:15,966 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 66 of 66 statements. [2025-02-05 09:59:15,966 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 09:59:15,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:59:17,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-05 09:59:17,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:59:17,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282098998] [2025-02-05 09:59:17,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282098998] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:59:17,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671316731] [2025-02-05 09:59:17,315 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 09:59:17,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:59:17,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:59:17,318 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) [2025-02-05 09:59:17,318 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 [2025-02-05 09:59:17,396 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 66 statements into 2 equivalence classes. [2025-02-05 09:59:17,446 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 66 of 66 statements. [2025-02-05 09:59:17,446 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 09:59:17,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:59:17,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-02-05 09:59:17,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:59:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-05 09:59:17,521 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:59:19,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-05 09:59:19,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671316731] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:59:19,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:59:19,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2025-02-05 09:59:19,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050576505] [2025-02-05 09:59:19,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:59:19,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2025-02-05 09:59:19,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:59:19,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2025-02-05 09:59:19,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2025-02-05 09:59:19,647 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand has 97 states, 97 states have (on average 1.1443298969072164) internal successors, (111), 97 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:19,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:59:19,736 INFO L93 Difference]: Finished difference Result 133 states and 190 transitions. [2025-02-05 09:59:19,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-02-05 09:59:19,736 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.1443298969072164) internal successors, (111), 97 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2025-02-05 09:59:19,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:59:19,737 INFO L225 Difference]: With dead ends: 133 [2025-02-05 09:59:19,737 INFO L226 Difference]: Without dead ends: 115 [2025-02-05 09:59:19,739 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2025-02-05 09:59:19,740 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 09:59:19,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 09:59:19,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2025-02-05 09:59:19,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2025-02-05 09:59:19,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.0526315789473684) internal successors, (120), 114 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:19,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2025-02-05 09:59:19,748 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 66 [2025-02-05 09:59:19,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:59:19,748 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2025-02-05 09:59:19,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.1443298969072164) internal successors, (111), 97 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:19,748 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2025-02-05 09:59:19,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-02-05 09:59:19,749 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:59:19,749 INFO L218 NwaCegarLoop]: trace histogram [94, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:59:19,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-05 09:59:19,954 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,SelfDestructingSolverStorable7 [2025-02-05 09:59:19,954 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:59:19,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:59:19,955 INFO L85 PathProgramCache]: Analyzing trace with hash -12966822, now seen corresponding path program 3 times [2025-02-05 09:59:19,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:59:19,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306127784] [2025-02-05 09:59:19,955 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 09:59:19,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:59:19,984 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 114 statements into 48 equivalence classes. [2025-02-05 09:59:19,989 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 114 statements. [2025-02-05 09:59:19,989 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-05 09:59:19,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:59:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4472 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2025-02-05 09:59:20,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:59:20,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306127784] [2025-02-05 09:59:20,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306127784] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:59:20,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264670910] [2025-02-05 09:59:20,106 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 09:59:20,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:59:20,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:59:20,108 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) [2025-02-05 09:59:20,109 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 [2025-02-05 09:59:20,211 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 114 statements into 48 equivalence classes. [2025-02-05 09:59:20,222 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 114 statements. [2025-02-05 09:59:20,222 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-05 09:59:20,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:59:20,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-05 09:59:20,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:59:20,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4472 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2025-02-05 09:59:20,534 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:59:20,569 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-05 09:59:20,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 11 [2025-02-05 09:59:20,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4472 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2025-02-05 09:59:20,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264670910] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:59:20,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:59:20,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-02-05 09:59:20,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058491567] [2025-02-05 09:59:20,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:59:20,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-05 09:59:20,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:59:20,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-05 09:59:20,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2025-02-05 09:59:20,665 INFO L87 Difference]: Start difference. First operand 115 states and 120 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:20,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:59:20,842 INFO L93 Difference]: Finished difference Result 155 states and 170 transitions. [2025-02-05 09:59:20,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-05 09:59:20,843 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2025-02-05 09:59:20,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:59:20,843 INFO L225 Difference]: With dead ends: 155 [2025-02-05 09:59:20,843 INFO L226 Difference]: Without dead ends: 126 [2025-02-05 09:59:20,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2025-02-05 09:59:20,844 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 09:59:20,847 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 96 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 09:59:20,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2025-02-05 09:59:20,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 118. [2025-02-05 09:59:20,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.0341880341880343) internal successors, (121), 117 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:20,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 121 transitions. [2025-02-05 09:59:20,860 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 121 transitions. Word has length 114 [2025-02-05 09:59:20,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:59:20,861 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 121 transitions. [2025-02-05 09:59:20,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:20,861 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 121 transitions. [2025-02-05 09:59:20,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-02-05 09:59:20,862 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:59:20,862 INFO L218 NwaCegarLoop]: trace histogram [94, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:59:20,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-05 09:59:21,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:59:21,063 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:59:21,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:59:21,063 INFO L85 PathProgramCache]: Analyzing trace with hash -789248135, now seen corresponding path program 4 times [2025-02-05 09:59:21,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:59:21,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513413139] [2025-02-05 09:59:21,064 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 09:59:21,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:59:21,113 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 117 statements into 2 equivalence classes. [2025-02-05 09:59:21,162 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 117 of 117 statements. [2025-02-05 09:59:21,165 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 09:59:21,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:59:25,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4478 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-05 09:59:25,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:59:25,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513413139] [2025-02-05 09:59:25,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513413139] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:59:25,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708557044] [2025-02-05 09:59:25,351 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 09:59:25,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:59:25,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:59:25,353 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) [2025-02-05 09:59:25,354 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 [2025-02-05 09:59:25,482 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 117 statements into 2 equivalence classes. [2025-02-05 09:59:25,577 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 117 of 117 statements. [2025-02-05 09:59:25,578 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 09:59:25,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:59:25,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 956 conjuncts, 96 conjuncts are in the unsatisfiable core [2025-02-05 09:59:25,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:59:25,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4478 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-05 09:59:25,751 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:59:33,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4478 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-05 09:59:33,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708557044] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:59:33,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:59:33,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2025-02-05 09:59:33,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245377502] [2025-02-05 09:59:33,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:59:33,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2025-02-05 09:59:33,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:59:33,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2025-02-05 09:59:33,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-02-05 09:59:33,079 INFO L87 Difference]: Start difference. First operand 118 states and 121 transitions. Second operand has 193 states, 193 states have (on average 1.072538860103627) internal successors, (207), 193 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:33,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:59:33,346 INFO L93 Difference]: Finished difference Result 235 states and 336 transitions. [2025-02-05 09:59:33,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2025-02-05 09:59:33,346 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 1.072538860103627) internal successors, (207), 193 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2025-02-05 09:59:33,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:59:33,347 INFO L225 Difference]: With dead ends: 235 [2025-02-05 09:59:33,348 INFO L226 Difference]: Without dead ends: 214 [2025-02-05 09:59:33,350 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-02-05 09:59:33,350 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 09:59:33,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 142 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 09:59:33,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2025-02-05 09:59:33,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2025-02-05 09:59:33,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 1.0187793427230047) internal successors, (217), 213 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:33,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 217 transitions. [2025-02-05 09:59:33,372 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 217 transitions. Word has length 117 [2025-02-05 09:59:33,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:59:33,373 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 217 transitions. [2025-02-05 09:59:33,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 1.072538860103627) internal successors, (207), 193 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:59:33,374 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 217 transitions. [2025-02-05 09:59:33,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2025-02-05 09:59:33,375 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:59:33,376 INFO L218 NwaCegarLoop]: trace histogram [190, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:59:33,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-05 09:59:33,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:59:33,576 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:59:33,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:59:33,577 INFO L85 PathProgramCache]: Analyzing trace with hash -252449927, now seen corresponding path program 5 times [2025-02-05 09:59:33,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:59:33,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120032283] [2025-02-05 09:59:33,577 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 09:59:33,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:59:33,630 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 213 statements into 96 equivalence classes. [2025-02-05 09:59:37,027 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) and asserted 213 of 213 statements. [2025-02-05 09:59:37,027 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2025-02-05 09:59:37,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:59:52,239 INFO L134 CoverageAnalysis]: Checked inductivity of 18158 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-05 09:59:52,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:59:52,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120032283] [2025-02-05 09:59:52,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120032283] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:59:52,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835030610] [2025-02-05 09:59:52,240 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 09:59:52,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:59:52,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:59:52,242 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) [2025-02-05 09:59:52,243 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 [2025-02-05 09:59:52,468 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 213 statements into 96 equivalence classes.