./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/rangesum60.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/reducercommutativity/rangesum60.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 6531e15623308e4078ac0600b5852029139b0fe65df20988c6e3b5d5367f33f6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-08 22:14:54,107 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-08 22:14:54,163 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-08 22:14:54,167 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-08 22:14:54,167 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-08 22:14:54,184 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-08 22:14:54,184 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-08 22:14:54,185 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-08 22:14:54,185 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-08 22:14:54,185 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-08 22:14:54,186 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-08 22:14:54,186 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-08 22:14:54,186 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-08 22:14:54,186 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-08 22:14:54,186 INFO L153 SettingsManager]: * Use SBE=true [2025-01-08 22:14:54,186 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-08 22:14:54,187 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-08 22:14:54,187 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-08 22:14:54,187 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-08 22:14:54,187 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-08 22:14:54,187 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-08 22:14:54,187 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-08 22:14:54,187 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-08 22:14:54,187 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-08 22:14:54,187 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-08 22:14:54,187 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-08 22:14:54,187 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-08 22:14:54,187 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-08 22:14:54,188 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-08 22:14:54,188 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:14:54,188 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:14:54,188 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:14:54,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:14:54,188 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-08 22:14:54,188 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:14:54,189 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:14:54,189 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:14:54,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:14:54,189 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-08 22:14:54,189 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-08 22:14:54,189 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-08 22:14:54,189 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-08 22:14:54,189 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-08 22:14:54,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-08 22:14:54,189 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-08 22:14:54,190 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-08 22:14:54,190 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-08 22:14:54,190 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-08 22:14:54,190 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 -> 6531e15623308e4078ac0600b5852029139b0fe65df20988c6e3b5d5367f33f6 [2025-01-08 22:14:54,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-08 22:14:54,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-08 22:14:54,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-08 22:14:54,408 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-08 22:14:54,409 INFO L274 PluginConnector]: CDTParser initialized [2025-01-08 22:14:54,409 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/rangesum60.i [2025-01-08 22:14:55,536 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e6fb301ae/7d4439f880d84f04af7ae760ed9dc19a/FLAG73effdcb5 [2025-01-08 22:14:55,813 INFO L384 CDTParser]: Found 1 translation units. [2025-01-08 22:14:55,813 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/reducercommutativity/rangesum60.i [2025-01-08 22:14:55,818 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e6fb301ae/7d4439f880d84f04af7ae760ed9dc19a/FLAG73effdcb5 [2025-01-08 22:14:56,111 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e6fb301ae/7d4439f880d84f04af7ae760ed9dc19a [2025-01-08 22:14:56,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-08 22:14:56,114 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-08 22:14:56,114 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-08 22:14:56,115 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-08 22:14:56,117 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-08 22:14:56,118 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:14:56" (1/1) ... [2025-01-08 22:14:56,118 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@139279b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:14:56, skipping insertion in model container [2025-01-08 22:14:56,118 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:14:56" (1/1) ... [2025-01-08 22:14:56,127 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-08 22:14:56,231 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/reducercommutativity/rangesum60.i[1465,1478] [2025-01-08 22:14:56,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:14:56,238 INFO L200 MainTranslator]: Completed pre-run [2025-01-08 22:14:56,249 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/reducercommutativity/rangesum60.i[1465,1478] [2025-01-08 22:14:56,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:14:56,265 INFO L204 MainTranslator]: Completed translation [2025-01-08 22:14:56,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:14:56 WrapperNode [2025-01-08 22:14:56,265 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-08 22:14:56,266 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-08 22:14:56,266 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-08 22:14:56,266 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-08 22:14:56,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:14:56" (1/1) ... [2025-01-08 22:14:56,274 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:14:56" (1/1) ... [2025-01-08 22:14:56,283 INFO L138 Inliner]: procedures = 17, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2025-01-08 22:14:56,283 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-08 22:14:56,283 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-08 22:14:56,283 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-08 22:14:56,283 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-08 22:14:56,288 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:14:56" (1/1) ... [2025-01-08 22:14:56,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:14:56" (1/1) ... [2025-01-08 22:14:56,290 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:14:56" (1/1) ... [2025-01-08 22:14:56,297 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2025-01-08 22:14:56,297 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:14:56" (1/1) ... [2025-01-08 22:14:56,297 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:14:56" (1/1) ... [2025-01-08 22:14:56,300 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:14:56" (1/1) ... [2025-01-08 22:14:56,301 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:14:56" (1/1) ... [2025-01-08 22:14:56,302 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:14:56" (1/1) ... [2025-01-08 22:14:56,303 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:14:56" (1/1) ... [2025-01-08 22:14:56,303 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:14:56" (1/1) ... [2025-01-08 22:14:56,304 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-08 22:14:56,305 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-08 22:14:56,305 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-08 22:14:56,305 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-08 22:14:56,306 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:14:56" (1/1) ... [2025-01-08 22:14:56,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:14:56,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:14:56,331 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-08 22:14:56,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-08 22:14:56,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-08 22:14:56,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-08 22:14:56,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-08 22:14:56,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-08 22:14:56,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-08 22:14:56,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-08 22:14:56,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-08 22:14:56,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-08 22:14:56,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-08 22:14:56,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-08 22:14:56,348 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2025-01-08 22:14:56,348 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2025-01-08 22:14:56,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-08 22:14:56,390 INFO L234 CfgBuilder]: Building ICFG [2025-01-08 22:14:56,391 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-08 22:14:56,484 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2025-01-08 22:14:56,485 INFO L283 CfgBuilder]: Performing block encoding [2025-01-08 22:14:56,490 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-08 22:14:56,491 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-08 22:14:56,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:14:56 BoogieIcfgContainer [2025-01-08 22:14:56,491 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-08 22:14:56,492 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-08 22:14:56,493 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-08 22:14:56,496 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-08 22:14:56,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.01 10:14:56" (1/3) ... [2025-01-08 22:14:56,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e59bae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:14:56, skipping insertion in model container [2025-01-08 22:14:56,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:14:56" (2/3) ... [2025-01-08 22:14:56,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e59bae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:14:56, skipping insertion in model container [2025-01-08 22:14:56,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:14:56" (3/3) ... [2025-01-08 22:14:56,497 INFO L128 eAbstractionObserver]: Analyzing ICFG rangesum60.i [2025-01-08 22:14:56,507 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-08 22:14:56,508 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rangesum60.i that has 2 procedures, 25 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-01-08 22:14:56,548 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-08 22:14:56,556 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;@7b8f980f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-08 22:14:56,557 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-08 22:14:56,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:14:56,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-01-08 22:14:56,564 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:14:56,565 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:14:56,565 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:14:56,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:14:56,568 INFO L85 PathProgramCache]: Analyzing trace with hash -283709352, now seen corresponding path program 1 times [2025-01-08 22:14:56,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:14:56,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050323389] [2025-01-08 22:14:56,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:14:56,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:14:56,625 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-01-08 22:14:56,635 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-01-08 22:14:56,635 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:14:56,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:14:56,764 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-08 22:14:56,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:14:56,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050323389] [2025-01-08 22:14:56,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050323389] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:14:56,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:14:56,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-08 22:14:56,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391783454] [2025-01-08 22:14:56,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:14:56,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:14:56,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:14:56,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:14:56,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-08 22:14:56,785 INFO L87 Difference]: Start difference. First operand has 25 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-08 22:14:56,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:14:56,808 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2025-01-08 22:14:56,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:14:56,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2025-01-08 22:14:56,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:14:56,813 INFO L225 Difference]: With dead ends: 48 [2025-01-08 22:14:56,813 INFO L226 Difference]: Without dead ends: 22 [2025-01-08 22:14:56,815 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-08 22:14:56,817 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:14:56,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:14:56,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-01-08 22:14:56,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-01-08 22:14:56,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:14:56,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2025-01-08 22:14:56,842 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 28 [2025-01-08 22:14:56,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:14:56,843 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2025-01-08 22:14:56,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-08 22:14:56,844 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2025-01-08 22:14:56,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-01-08 22:14:56,846 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:14:56,846 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:14:56,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-08 22:14:56,847 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:14:56,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:14:56,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1923479240, now seen corresponding path program 1 times [2025-01-08 22:14:56,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:14:56,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918196552] [2025-01-08 22:14:56,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:14:56,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:14:56,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-08 22:14:56,871 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-08 22:14:56,871 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:14:56,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:14:56,954 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-08 22:14:56,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:14:56,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918196552] [2025-01-08 22:14:56,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918196552] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:14:56,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748392285] [2025-01-08 22:14:56,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:14:56,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:14:56,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:14:56,957 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:14:56,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-08 22:14:57,011 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-08 22:14:57,033 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-08 22:14:57,034 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:14:57,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:14:57,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-08 22:14:57,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:14:57,051 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:14:57,051 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-08 22:14:57,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748392285] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:14:57,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-08 22:14:57,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-01-08 22:14:57,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098888425] [2025-01-08 22:14:57,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:14:57,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:14:57,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:14:57,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:14:57,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-08 22:14:57,053 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-08 22:14:57,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:14:57,065 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2025-01-08 22:14:57,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:14:57,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2025-01-08 22:14:57,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:14:57,065 INFO L225 Difference]: With dead ends: 41 [2025-01-08 22:14:57,066 INFO L226 Difference]: Without dead ends: 25 [2025-01-08 22:14:57,066 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-08 22:14:57,066 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:14:57,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 45 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:14:57,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-01-08 22:14:57,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2025-01-08 22:14:57,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:14:57,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2025-01-08 22:14:57,071 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 29 [2025-01-08 22:14:57,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:14:57,071 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2025-01-08 22:14:57,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-08 22:14:57,072 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2025-01-08 22:14:57,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-08 22:14:57,072 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:14:57,072 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:14:57,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-08 22:14:57,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:14:57,273 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:14:57,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:14:57,274 INFO L85 PathProgramCache]: Analyzing trace with hash -70098359, now seen corresponding path program 1 times [2025-01-08 22:14:57,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:14:57,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204397406] [2025-01-08 22:14:57,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:14:57,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:14:57,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-08 22:14:57,294 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-08 22:14:57,295 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:14:57,295 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:14:57,413 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-01-08 22:14:57,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:14:57,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204397406] [2025-01-08 22:14:57,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204397406] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:14:57,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218375425] [2025-01-08 22:14:57,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:14:57,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:14:57,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:14:57,416 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:14:57,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-08 22:14:57,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-08 22:14:57,476 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-08 22:14:57,476 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:14:57,476 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:14:57,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-08 22:14:57,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:14:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-08 22:14:57,486 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-08 22:14:57,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218375425] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:14:57,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-08 22:14:57,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-01-08 22:14:57,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900472868] [2025-01-08 22:14:57,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:14:57,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:14:57,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:14:57,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:14:57,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-08 22:14:57,488 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-08 22:14:57,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:14:57,495 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2025-01-08 22:14:57,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:14:57,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2025-01-08 22:14:57,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:14:57,496 INFO L225 Difference]: With dead ends: 39 [2025-01-08 22:14:57,496 INFO L226 Difference]: Without dead ends: 25 [2025-01-08 22:14:57,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-08 22:14:57,496 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:14:57,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:14:57,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-01-08 22:14:57,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2025-01-08 22:14:57,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:14:57,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2025-01-08 22:14:57,499 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 38 [2025-01-08 22:14:57,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:14:57,500 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2025-01-08 22:14:57,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-08 22:14:57,500 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2025-01-08 22:14:57,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-08 22:14:57,507 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:14:57,507 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:14:57,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-08 22:14:57,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:14:57,708 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:14:57,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:14:57,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1351865865, now seen corresponding path program 1 times [2025-01-08 22:14:57,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:14:57,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460895495] [2025-01-08 22:14:57,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:14:57,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:14:57,718 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-08 22:14:57,720 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-08 22:14:57,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:14:57,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:14:57,790 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-08 22:14:57,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:14:57,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460895495] [2025-01-08 22:14:57,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460895495] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:14:57,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321624762] [2025-01-08 22:14:57,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:14:57,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:14:57,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:14:57,794 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:14:57,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-08 22:14:57,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-08 22:14:57,860 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-08 22:14:57,861 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:14:57,861 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:14:57,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-08 22:14:57,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:14:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-01-08 22:14:57,876 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-08 22:14:57,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321624762] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:14:57,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-08 22:14:57,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-01-08 22:14:57,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65423017] [2025-01-08 22:14:57,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:14:57,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:14:57,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:14:57,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:14:57,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-08 22:14:57,878 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-08 22:14:57,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:14:57,885 INFO L93 Difference]: Finished difference Result 48 states and 64 transitions. [2025-01-08 22:14:57,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:14:57,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2025-01-08 22:14:57,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:14:57,886 INFO L225 Difference]: With dead ends: 48 [2025-01-08 22:14:57,886 INFO L226 Difference]: Without dead ends: 29 [2025-01-08 22:14:57,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-08 22:14:57,887 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:14:57,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:14:57,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-01-08 22:14:57,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2025-01-08 22:14:57,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:14:57,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2025-01-08 22:14:57,890 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 39 [2025-01-08 22:14:57,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:14:57,890 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2025-01-08 22:14:57,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-08 22:14:57,891 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2025-01-08 22:14:57,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-08 22:14:57,891 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:14:57,891 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:14:57,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-08 22:14:58,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:14:58,095 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:14:58,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:14:58,096 INFO L85 PathProgramCache]: Analyzing trace with hash 128686118, now seen corresponding path program 1 times [2025-01-08 22:14:58,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:14:58,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262356097] [2025-01-08 22:14:58,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:14:58,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:14:58,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-08 22:14:58,105 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-08 22:14:58,105 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:14:58,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:14:58,136 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-08 22:14:58,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:14:58,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262356097] [2025-01-08 22:14:58,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262356097] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:14:58,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721968175] [2025-01-08 22:14:58,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:14:58,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:14:58,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:14:58,139 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:14:58,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-08 22:14:58,179 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-08 22:14:58,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-08 22:14:58,197 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:14:58,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:14:58,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-08 22:14:58,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:14:58,217 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-08 22:14:58,217 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:14:58,249 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-08 22:14:58,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721968175] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:14:58,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:14:58,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-01-08 22:14:58,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118097548] [2025-01-08 22:14:58,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:14:58,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-08 22:14:58,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:14:58,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-08 22:14:58,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-08 22:14:58,251 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-01-08 22:14:58,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:14:58,268 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2025-01-08 22:14:58,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-08 22:14:58,268 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2025-01-08 22:14:58,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:14:58,269 INFO L225 Difference]: With dead ends: 57 [2025-01-08 22:14:58,269 INFO L226 Difference]: Without dead ends: 32 [2025-01-08 22:14:58,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-08 22:14:58,269 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:14:58,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:14:58,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-01-08 22:14:58,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2025-01-08 22:14:58,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:14:58,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2025-01-08 22:14:58,272 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 39 [2025-01-08 22:14:58,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:14:58,272 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2025-01-08 22:14:58,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-01-08 22:14:58,272 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2025-01-08 22:14:58,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-01-08 22:14:58,275 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:14:58,275 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:14:58,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-08 22:14:58,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:14:58,476 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:14:58,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:14:58,477 INFO L85 PathProgramCache]: Analyzing trace with hash -183283898, now seen corresponding path program 2 times [2025-01-08 22:14:58,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:14:58,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013087703] [2025-01-08 22:14:58,477 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:14:58,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:14:58,498 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-01-08 22:14:58,517 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-01-08 22:14:58,518 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:14:58,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:14:58,564 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-01-08 22:14:58,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:14:58,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013087703] [2025-01-08 22:14:58,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013087703] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:14:58,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447502774] [2025-01-08 22:14:58,565 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:14:58,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:14:58,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:14:58,569 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) [2025-01-08 22:14:58,581 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 [2025-01-08 22:14:58,624 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-01-08 22:14:58,646 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-01-08 22:14:58,646 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:14:58,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:14:58,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-08 22:14:58,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:14:58,689 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-08 22:14:58,692 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:14:58,763 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-08 22:14:58,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447502774] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:14:58,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:14:58,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2025-01-08 22:14:58,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259035135] [2025-01-08 22:14:58,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:14:58,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-08 22:14:58,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:14:58,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-08 22:14:58,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-01-08 22:14:58,765 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2025-01-08 22:14:58,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:14:58,793 INFO L93 Difference]: Finished difference Result 67 states and 93 transitions. [2025-01-08 22:14:58,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-08 22:14:58,793 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2025-01-08 22:14:58,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:14:58,794 INFO L225 Difference]: With dead ends: 67 [2025-01-08 22:14:58,794 INFO L226 Difference]: Without dead ends: 42 [2025-01-08 22:14:58,794 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-01-08 22:14:58,795 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 2 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:14:58,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 83 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:14:58,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2025-01-08 22:14:58,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2025-01-08 22:14:58,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 36 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:14:58,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2025-01-08 22:14:58,798 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 42 [2025-01-08 22:14:58,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:14:58,798 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2025-01-08 22:14:58,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2025-01-08 22:14:58,799 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2025-01-08 22:14:58,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-01-08 22:14:58,800 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:14:58,800 INFO L218 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:14:58,805 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 [2025-01-08 22:14:59,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:14:59,001 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:14:59,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:14:59,001 INFO L85 PathProgramCache]: Analyzing trace with hash -223700837, now seen corresponding path program 3 times [2025-01-08 22:14:59,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:14:59,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524097703] [2025-01-08 22:14:59,001 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:14:59,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:14:59,011 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 57 statements into 6 equivalence classes. [2025-01-08 22:14:59,015 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 57 statements. [2025-01-08 22:14:59,015 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-08 22:14:59,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:14:59,034 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2025-01-08 22:14:59,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:14:59,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524097703] [2025-01-08 22:14:59,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524097703] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:14:59,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:14:59,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-08 22:14:59,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863024214] [2025-01-08 22:14:59,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:14:59,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-08 22:14:59,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:14:59,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-08 22:14:59,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:14:59,035 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-08 22:14:59,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:14:59,051 INFO L93 Difference]: Finished difference Result 70 states and 89 transitions. [2025-01-08 22:14:59,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-08 22:14:59,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 57 [2025-01-08 22:14:59,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:14:59,052 INFO L225 Difference]: With dead ends: 70 [2025-01-08 22:14:59,052 INFO L226 Difference]: Without dead ends: 44 [2025-01-08 22:14:59,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:14:59,052 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:14:59,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 65 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:14:59,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-01-08 22:14:59,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2025-01-08 22:14:59,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:14:59,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2025-01-08 22:14:59,056 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 57 [2025-01-08 22:14:59,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:14:59,056 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2025-01-08 22:14:59,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-08 22:14:59,056 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2025-01-08 22:14:59,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-08 22:14:59,057 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:14:59,057 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:14:59,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-08 22:14:59,057 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:14:59,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:14:59,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1472205437, now seen corresponding path program 1 times [2025-01-08 22:14:59,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:14:59,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103104972] [2025-01-08 22:14:59,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:14:59,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:14:59,067 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-08 22:14:59,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-08 22:14:59,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:14:59,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:14:59,137 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2025-01-08 22:14:59,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:14:59,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103104972] [2025-01-08 22:14:59,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103104972] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:14:59,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037346674] [2025-01-08 22:14:59,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:14:59,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:14:59,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:14:59,139 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) [2025-01-08 22:14:59,141 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 [2025-01-08 22:14:59,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-01-08 22:14:59,213 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-01-08 22:14:59,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:14:59,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:14:59,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-08 22:14:59,216 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:14:59,320 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2025-01-08 22:14:59,320 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:14:59,508 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2025-01-08 22:14:59,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037346674] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:14:59,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:14:59,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13, 13] total 26 [2025-01-08 22:14:59,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850071291] [2025-01-08 22:14:59,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:14:59,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-08 22:14:59,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:14:59,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-08 22:14:59,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2025-01-08 22:14:59,509 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 26 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-08 22:14:59,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:14:59,571 INFO L93 Difference]: Finished difference Result 78 states and 102 transitions. [2025-01-08 22:14:59,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-08 22:14:59,572 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 26 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 66 [2025-01-08 22:14:59,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:14:59,572 INFO L225 Difference]: With dead ends: 78 [2025-01-08 22:14:59,573 INFO L226 Difference]: Without dead ends: 52 [2025-01-08 22:14:59,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2025-01-08 22:14:59,573 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:14:59,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 91 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:14:59,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-01-08 22:14:59,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2025-01-08 22:14:59,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:14:59,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2025-01-08 22:14:59,578 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 66 [2025-01-08 22:14:59,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:14:59,578 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2025-01-08 22:14:59,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 26 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-08 22:14:59,578 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2025-01-08 22:14:59,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-01-08 22:14:59,579 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:14:59,579 INFO L218 NwaCegarLoop]: trace histogram [22, 9, 9, 6, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:14:59,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-08 22:14:59,779 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 [2025-01-08 22:14:59,780 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:14:59,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:14:59,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1759837429, now seen corresponding path program 2 times [2025-01-08 22:14:59,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:14:59,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930390953] [2025-01-08 22:14:59,781 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:14:59,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:14:59,794 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes. [2025-01-08 22:14:59,813 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-01-08 22:14:59,813 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:14:59,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:15:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2025-01-08 22:15:00,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:15:00,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930390953] [2025-01-08 22:15:00,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930390953] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:15:00,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908168188] [2025-01-08 22:15:00,310 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:15:00,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:15:00,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:15:00,315 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) [2025-01-08 22:15:00,316 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 [2025-01-08 22:15:00,369 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes. [2025-01-08 22:15:00,405 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-01-08 22:15:00,405 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:15:00,405 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:15:00,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-08 22:15:00,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:15:00,452 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2025-01-08 22:15:00,452 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:15:01,076 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2025-01-08 22:15:01,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908168188] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:15:01,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:15:01,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2025-01-08 22:15:01,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130621] [2025-01-08 22:15:01,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:15:01,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-01-08 22:15:01,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:15:01,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-01-08 22:15:01,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-01-08 22:15:01,079 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 49 states, 49 states have (on average 1.530612244897959) internal successors, (75), 49 states have internal predecessors, (75), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-01-08 22:15:01,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:15:01,133 INFO L93 Difference]: Finished difference Result 103 states and 138 transitions. [2025-01-08 22:15:01,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-01-08 22:15:01,133 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.530612244897959) internal successors, (75), 49 states have internal predecessors, (75), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 79 [2025-01-08 22:15:01,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:15:01,134 INFO L225 Difference]: With dead ends: 103 [2025-01-08 22:15:01,134 INFO L226 Difference]: Without dead ends: 76 [2025-01-08 22:15:01,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-01-08 22:15:01,135 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:15:01,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 118 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:15:01,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2025-01-08 22:15:01,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2025-01-08 22:15:01,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 71 states have internal predecessors, (76), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:15:01,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2025-01-08 22:15:01,140 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 79 [2025-01-08 22:15:01,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:15:01,141 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2025-01-08 22:15:01,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.530612244897959) internal successors, (75), 49 states have internal predecessors, (75), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-01-08 22:15:01,141 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2025-01-08 22:15:01,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-01-08 22:15:01,142 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:15:01,142 INFO L218 NwaCegarLoop]: trace histogram [46, 9, 9, 6, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:15:01,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-08 22:15:01,346 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 [2025-01-08 22:15:01,346 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:15:01,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:15:01,347 INFO L85 PathProgramCache]: Analyzing trace with hash -893275381, now seen corresponding path program 3 times [2025-01-08 22:15:01,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:15:01,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380216896] [2025-01-08 22:15:01,347 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:15:01,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:15:01,366 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 103 statements into 24 equivalence classes. [2025-01-08 22:15:01,381 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 36 of 103 statements. [2025-01-08 22:15:01,381 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:15:01,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:15:01,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1231 trivial. 0 not checked. [2025-01-08 22:15:01,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:15:01,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380216896] [2025-01-08 22:15:01,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380216896] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:15:01,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933659049] [2025-01-08 22:15:01,419 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:15:01,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:15:01,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:15:01,421 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) [2025-01-08 22:15:01,423 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 [2025-01-08 22:15:01,495 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 103 statements into 24 equivalence classes. [2025-01-08 22:15:01,548 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 36 of 103 statements. [2025-01-08 22:15:01,548 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:15:01,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:15:01,549 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-08 22:15:01,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:15:01,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 76 proven. 3 refuted. 0 times theorem prover too weak. 1155 trivial. 0 not checked. [2025-01-08 22:15:01,566 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:15:01,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1231 trivial. 0 not checked. [2025-01-08 22:15:01,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933659049] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:15:01,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:15:01,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-01-08 22:15:01,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260090375] [2025-01-08 22:15:01,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:15:01,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-08 22:15:01,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:15:01,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-08 22:15:01,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-01-08 22:15:01,591 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-08 22:15:01,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:15:01,601 INFO L93 Difference]: Finished difference Result 99 states and 111 transitions. [2025-01-08 22:15:01,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-08 22:15:01,602 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 103 [2025-01-08 22:15:01,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:15:01,602 INFO L225 Difference]: With dead ends: 99 [2025-01-08 22:15:01,602 INFO L226 Difference]: Without dead ends: 80 [2025-01-08 22:15:01,602 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-01-08 22:15:01,603 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:15:01,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:15:01,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-01-08 22:15:01,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2025-01-08 22:15:01,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 75 states have internal predecessors, (80), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:15:01,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2025-01-08 22:15:01,607 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 103 [2025-01-08 22:15:01,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:15:01,608 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2025-01-08 22:15:01,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-08 22:15:01,608 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2025-01-08 22:15:01,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-01-08 22:15:01,608 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:15:01,609 INFO L218 NwaCegarLoop]: trace histogram [46, 9, 9, 6, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:15:01,614 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 [2025-01-08 22:15:01,809 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 [2025-01-08 22:15:01,810 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:15:01,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:15:01,810 INFO L85 PathProgramCache]: Analyzing trace with hash 454742283, now seen corresponding path program 4 times [2025-01-08 22:15:01,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:15:01,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106320545] [2025-01-08 22:15:01,810 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:15:01,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:15:01,836 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 107 statements into 2 equivalence classes. [2025-01-08 22:15:01,855 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 107 of 107 statements. [2025-01-08 22:15:01,855 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:15:01,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:15:01,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1252 backedges. 5 proven. 81 refuted. 0 times theorem prover too weak. 1166 trivial. 0 not checked. [2025-01-08 22:15:01,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:15:01,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106320545] [2025-01-08 22:15:01,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106320545] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:15:01,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606712102] [2025-01-08 22:15:01,955 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:15:01,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:15:01,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:15:01,957 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) [2025-01-08 22:15:01,958 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 [2025-01-08 22:15:02,043 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 107 statements into 2 equivalence classes. [2025-01-08 22:15:02,099 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 107 of 107 statements. [2025-01-08 22:15:02,099 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:15:02,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:15:02,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-08 22:15:02,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:15:02,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1252 backedges. 79 proven. 7 refuted. 0 times theorem prover too weak. 1166 trivial. 0 not checked. [2025-01-08 22:15:02,136 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:15:02,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1252 backedges. 79 proven. 7 refuted. 0 times theorem prover too weak. 1166 trivial. 0 not checked. [2025-01-08 22:15:02,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606712102] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:15:02,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:15:02,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-01-08 22:15:02,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108349759] [2025-01-08 22:15:02,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:15:02,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-08 22:15:02,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:15:02,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-08 22:15:02,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-01-08 22:15:02,174 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-01-08 22:15:02,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:15:02,197 INFO L93 Difference]: Finished difference Result 121 states and 138 transitions. [2025-01-08 22:15:02,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-08 22:15:02,198 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 107 [2025-01-08 22:15:02,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:15:02,199 INFO L225 Difference]: With dead ends: 121 [2025-01-08 22:15:02,199 INFO L226 Difference]: Without dead ends: 92 [2025-01-08 22:15:02,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-01-08 22:15:02,201 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:15:02,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 108 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:15:02,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2025-01-08 22:15:02,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2025-01-08 22:15:02,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 87 states have (on average 1.0574712643678161) internal successors, (92), 87 states have internal predecessors, (92), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:15:02,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2025-01-08 22:15:02,213 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 107 [2025-01-08 22:15:02,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:15:02,213 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2025-01-08 22:15:02,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-01-08 22:15:02,213 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2025-01-08 22:15:02,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-01-08 22:15:02,214 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:15:02,214 INFO L218 NwaCegarLoop]: trace histogram [46, 21, 21, 18, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:15:02,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-08 22:15:02,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:15:02,415 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:15:02,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:15:02,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1076928203, now seen corresponding path program 5 times [2025-01-08 22:15:02,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:15:02,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100554741] [2025-01-08 22:15:02,415 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:15:02,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:15:02,435 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 143 statements into 24 equivalence classes. [2025-01-08 22:15:02,507 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) and asserted 43 of 143 statements. [2025-01-08 22:15:02,507 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2025-01-08 22:15:02,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:15:02,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1810 backedges. 28 proven. 82 refuted. 0 times theorem prover too weak. 1700 trivial. 0 not checked. [2025-01-08 22:15:02,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:15:02,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100554741] [2025-01-08 22:15:02,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100554741] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:15:02,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783627876] [2025-01-08 22:15:02,555 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:15:02,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:15:02,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:15:02,557 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:15:02,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-08 22:15:02,656 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 143 statements into 24 equivalence classes. [2025-01-08 22:15:03,029 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) and asserted 43 of 143 statements. [2025-01-08 22:15:03,029 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2025-01-08 22:15:03,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:15:03,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-08 22:15:03,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:15:03,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1810 backedges. 363 proven. 7 refuted. 0 times theorem prover too weak. 1440 trivial. 0 not checked. [2025-01-08 22:15:03,060 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:15:03,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1810 backedges. 37 proven. 131 refuted. 0 times theorem prover too weak. 1642 trivial. 0 not checked. [2025-01-08 22:15:03,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783627876] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:15:03,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:15:03,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 10 [2025-01-08 22:15:03,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150761529] [2025-01-08 22:15:03,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:15:03,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-08 22:15:03,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:15:03,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-08 22:15:03,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2025-01-08 22:15:03,119 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-08 22:15:03,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:15:03,161 INFO L93 Difference]: Finished difference Result 151 states and 176 transitions. [2025-01-08 22:15:03,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-08 22:15:03,162 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 143 [2025-01-08 22:15:03,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:15:03,163 INFO L225 Difference]: With dead ends: 151 [2025-01-08 22:15:03,163 INFO L226 Difference]: Without dead ends: 110 [2025-01-08 22:15:03,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2025-01-08 22:15:03,164 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:15:03,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 65 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:15:03,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2025-01-08 22:15:03,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2025-01-08 22:15:03,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 105 states have (on average 1.1047619047619048) internal successors, (116), 105 states have internal predecessors, (116), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:15:03,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 122 transitions. [2025-01-08 22:15:03,170 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 122 transitions. Word has length 143 [2025-01-08 22:15:03,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:15:03,170 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 122 transitions. [2025-01-08 22:15:03,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-08 22:15:03,171 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 122 transitions. [2025-01-08 22:15:03,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2025-01-08 22:15:03,172 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:15:03,172 INFO L218 NwaCegarLoop]: trace histogram [46, 39, 39, 21, 18, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:15:03,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-08 22:15:03,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-08 22:15:03,376 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:15:03,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:15:03,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1668649685, now seen corresponding path program 6 times [2025-01-08 22:15:03,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:15:03,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571360977] [2025-01-08 22:15:03,377 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:15:03,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:15:03,406 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 197 statements into 28 equivalence classes. [2025-01-08 22:15:03,487 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 68 of 197 statements. [2025-01-08 22:15:03,487 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-01-08 22:15:03,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:15:03,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3457 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3436 trivial. 0 not checked. [2025-01-08 22:15:03,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:15:03,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571360977] [2025-01-08 22:15:03,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571360977] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:15:03,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519914240] [2025-01-08 22:15:03,610 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:15:03,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:15:03,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:15:03,612 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:15:03,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-08 22:15:03,724 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 197 statements into 28 equivalence classes. [2025-01-08 22:15:03,811 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 68 of 197 statements. [2025-01-08 22:15:03,811 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-01-08 22:15:03,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:15:03,815 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-08 22:15:03,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:15:03,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3457 backedges. 1076 proven. 21 refuted. 0 times theorem prover too weak. 2360 trivial. 0 not checked. [2025-01-08 22:15:03,833 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:15:03,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3457 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3436 trivial. 0 not checked. [2025-01-08 22:15:03,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519914240] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:15:03,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:15:03,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2025-01-08 22:15:03,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629537841] [2025-01-08 22:15:03,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:15:03,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-08 22:15:03,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:15:03,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-08 22:15:03,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2025-01-08 22:15:03,933 INFO L87 Difference]: Start difference. First operand 110 states and 122 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-08 22:15:03,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:15:03,953 INFO L93 Difference]: Finished difference Result 167 states and 195 transitions. [2025-01-08 22:15:03,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-08 22:15:03,953 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 197 [2025-01-08 22:15:03,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:15:03,954 INFO L225 Difference]: With dead ends: 167 [2025-01-08 22:15:03,954 INFO L226 Difference]: Without dead ends: 118 [2025-01-08 22:15:03,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2025-01-08 22:15:03,955 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:15:03,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 141 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:15:03,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2025-01-08 22:15:03,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2025-01-08 22:15:03,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 113 states have (on average 1.0973451327433628) internal successors, (124), 113 states have internal predecessors, (124), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:15:03,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 130 transitions. [2025-01-08 22:15:03,960 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 130 transitions. Word has length 197 [2025-01-08 22:15:03,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:15:03,961 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 130 transitions. [2025-01-08 22:15:03,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-08 22:15:03,961 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 130 transitions. [2025-01-08 22:15:03,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2025-01-08 22:15:03,966 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:15:03,966 INFO L218 NwaCegarLoop]: trace histogram [46, 39, 39, 21, 18, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:15:03,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-08 22:15:04,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-01-08 22:15:04,167 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:15:04,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:15:04,168 INFO L85 PathProgramCache]: Analyzing trace with hash -434132693, now seen corresponding path program 7 times [2025-01-08 22:15:04,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:15:04,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312479848] [2025-01-08 22:15:04,168 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:15:04,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:15:04,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 205 statements into 1 equivalence classes. [2025-01-08 22:15:04,220 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 205 of 205 statements. [2025-01-08 22:15:04,221 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:15:04,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:15:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3541 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2460 trivial. 0 not checked. [2025-01-08 22:15:05,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:15:05,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312479848] [2025-01-08 22:15:05,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312479848] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:15:05,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851944685] [2025-01-08 22:15:05,926 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:15:05,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:15:05,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:15:05,928 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:15:05,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-08 22:15:06,092 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 205 statements into 1 equivalence classes. [2025-01-08 22:15:06,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 205 of 205 statements. [2025-01-08 22:15:06,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:15:06,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:15:06,175 INFO L256 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-01-08 22:15:06,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:15:06,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3541 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2460 trivial. 0 not checked. [2025-01-08 22:15:06,251 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:15:07,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3541 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2460 trivial. 0 not checked. [2025-01-08 22:15:07,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851944685] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:15:07,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:15:07,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 63 [2025-01-08 22:15:07,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524850729] [2025-01-08 22:15:07,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:15:07,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2025-01-08 22:15:07,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:15:07,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2025-01-08 22:15:07,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2025-01-08 22:15:07,495 INFO L87 Difference]: Start difference. First operand 118 states and 130 transitions. Second operand has 63 states, 63 states have (on average 1.4285714285714286) internal successors, (90), 63 states have internal predecessors, (90), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-01-08 22:15:07,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:15:07,558 INFO L93 Difference]: Finished difference Result 201 states and 238 transitions. [2025-01-08 22:15:07,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2025-01-08 22:15:07,558 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.4285714285714286) internal successors, (90), 63 states have internal predecessors, (90), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 205 [2025-01-08 22:15:07,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:15:07,559 INFO L225 Difference]: With dead ends: 201 [2025-01-08 22:15:07,559 INFO L226 Difference]: Without dead ends: 132 [2025-01-08 22:15:07,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 362 SyntacticMatches, 34 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1187 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2025-01-08 22:15:07,560 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:15:07,560 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 95 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:15:07,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2025-01-08 22:15:07,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2025-01-08 22:15:07,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 127 states have (on average 1.0866141732283465) internal successors, (138), 127 states have internal predecessors, (138), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:15:07,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 144 transitions. [2025-01-08 22:15:07,566 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 144 transitions. Word has length 205 [2025-01-08 22:15:07,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:15:07,566 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 144 transitions. [2025-01-08 22:15:07,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.4285714285714286) internal successors, (90), 63 states have internal predecessors, (90), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-01-08 22:15:07,566 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 144 transitions. [2025-01-08 22:15:07,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2025-01-08 22:15:07,568 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:15:07,568 INFO L218 NwaCegarLoop]: trace histogram [60, 39, 39, 21, 18, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:15:07,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-08 22:15:07,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:15:07,769 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:15:07,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:15:07,769 INFO L85 PathProgramCache]: Analyzing trace with hash -352492245, now seen corresponding path program 8 times [2025-01-08 22:15:07,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:15:07,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936812987] [2025-01-08 22:15:07,769 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:15:07,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:15:07,797 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 219 statements into 2 equivalence classes. [2025-01-08 22:15:07,831 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 219 of 219 statements. [2025-01-08 22:15:07,831 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:15:07,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:15:08,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 133 proven. 1131 refuted. 0 times theorem prover too weak. 3026 trivial. 0 not checked. [2025-01-08 22:15:08,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:15:08,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936812987] [2025-01-08 22:15:08,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936812987] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:15:08,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604451004] [2025-01-08 22:15:08,033 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:15:08,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:15:08,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:15:08,035 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:15:08,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-08 22:15:08,201 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 219 statements into 2 equivalence classes. [2025-01-08 22:15:08,281 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 219 of 219 statements. [2025-01-08 22:15:08,281 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:15:08,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:15:08,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-08 22:15:08,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:15:08,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 669 proven. 57 refuted. 0 times theorem prover too weak. 3564 trivial. 0 not checked. [2025-01-08 22:15:08,315 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:15:08,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 133 proven. 1131 refuted. 0 times theorem prover too weak. 3026 trivial. 0 not checked. [2025-01-08 22:15:08,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604451004] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:15:08,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:15:08,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2025-01-08 22:15:08,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208915740] [2025-01-08 22:15:08,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:15:08,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-08 22:15:08,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:15:08,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-08 22:15:08,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2025-01-08 22:15:08,401 INFO L87 Difference]: Start difference. First operand 132 states and 144 transitions. Second operand has 17 states, 17 states have (on average 4.352941176470588) internal successors, (74), 17 states have internal predecessors, (74), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-08 22:15:08,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:15:08,450 INFO L93 Difference]: Finished difference Result 223 states and 256 transitions. [2025-01-08 22:15:08,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-08 22:15:08,450 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.352941176470588) internal successors, (74), 17 states have internal predecessors, (74), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 219 [2025-01-08 22:15:08,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:15:08,451 INFO L225 Difference]: With dead ends: 223 [2025-01-08 22:15:08,451 INFO L226 Difference]: Without dead ends: 156 [2025-01-08 22:15:08,451 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2025-01-08 22:15:08,452 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:15:08,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 87 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:15:08,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2025-01-08 22:15:08,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2025-01-08 22:15:08,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 151 states have (on average 1.0728476821192052) internal successors, (162), 151 states have internal predecessors, (162), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:15:08,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 168 transitions. [2025-01-08 22:15:08,464 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 168 transitions. Word has length 219 [2025-01-08 22:15:08,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:15:08,465 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 168 transitions. [2025-01-08 22:15:08,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.352941176470588) internal successors, (74), 17 states have internal predecessors, (74), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-08 22:15:08,465 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 168 transitions. [2025-01-08 22:15:08,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2025-01-08 22:15:08,466 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:15:08,466 INFO L218 NwaCegarLoop]: trace histogram [63, 63, 60, 42, 21, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:15:08,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-08 22:15:08,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:15:08,667 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:15:08,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:15:08,667 INFO L85 PathProgramCache]: Analyzing trace with hash 212664491, now seen corresponding path program 9 times [2025-01-08 22:15:08,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:15:08,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600232591] [2025-01-08 22:15:08,667 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:15:08,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:15:08,695 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 291 statements into 44 equivalence classes. [2025-01-08 22:15:08,764 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 96 of 291 statements. [2025-01-08 22:15:08,765 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-01-08 22:15:08,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:15:09,155 INFO L134 CoverageAnalysis]: Checked inductivity of 7998 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 7893 trivial. 0 not checked. [2025-01-08 22:15:09,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:15:09,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600232591] [2025-01-08 22:15:09,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600232591] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:15:09,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038874841] [2025-01-08 22:15:09,155 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:15:09,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:15:09,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:15:09,160 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:15:09,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-08 22:15:09,338 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 291 statements into 44 equivalence classes. [2025-01-08 22:15:10,422 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 96 of 291 statements. [2025-01-08 22:15:10,423 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-01-08 22:15:10,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:15:10,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-08 22:15:10,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:15:10,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7998 backedges. 2740 proven. 105 refuted. 0 times theorem prover too weak. 5153 trivial. 0 not checked. [2025-01-08 22:15:10,489 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:15:10,777 INFO L134 CoverageAnalysis]: Checked inductivity of 7998 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 7893 trivial. 0 not checked. [2025-01-08 22:15:10,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038874841] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:15:10,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:15:10,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2025-01-08 22:15:10,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30189171] [2025-01-08 22:15:10,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:15:10,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-01-08 22:15:10,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:15:10,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-01-08 22:15:10,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=560, Invalid=562, Unknown=0, NotChecked=0, Total=1122 [2025-01-08 22:15:10,779 INFO L87 Difference]: Start difference. First operand 156 states and 168 transitions. Second operand has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-08 22:15:10,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:15:10,808 INFO L93 Difference]: Finished difference Result 245 states and 281 transitions. [2025-01-08 22:15:10,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-01-08 22:15:10,809 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 291 [2025-01-08 22:15:10,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:15:10,810 INFO L225 Difference]: With dead ends: 245 [2025-01-08 22:15:10,810 INFO L226 Difference]: Without dead ends: 172 [2025-01-08 22:15:10,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 564 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=560, Invalid=562, Unknown=0, NotChecked=0, Total=1122 [2025-01-08 22:15:10,811 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:15:10,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 118 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:15:10,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2025-01-08 22:15:10,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2025-01-08 22:15:10,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 167 states have (on average 1.0658682634730539) internal successors, (178), 167 states have internal predecessors, (178), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:15:10,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 184 transitions. [2025-01-08 22:15:10,816 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 184 transitions. Word has length 291 [2025-01-08 22:15:10,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:15:10,817 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 184 transitions. [2025-01-08 22:15:10,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-08 22:15:10,817 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 184 transitions. [2025-01-08 22:15:10,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2025-01-08 22:15:10,819 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:15:10,819 INFO L218 NwaCegarLoop]: trace histogram [63, 63, 60, 42, 30, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:15:10,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-01-08 22:15:11,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-01-08 22:15:11,020 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:15:11,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:15:11,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1198032725, now seen corresponding path program 10 times [2025-01-08 22:15:11,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:15:11,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686494394] [2025-01-08 22:15:11,020 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:15:11,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:15:11,049 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 307 statements into 2 equivalence classes. [2025-01-08 22:15:11,076 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 307 of 307 statements. [2025-01-08 22:15:11,076 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:15:11,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:15:11,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8358 backedges. 293 proven. 3039 refuted. 0 times theorem prover too weak. 5026 trivial. 0 not checked. [2025-01-08 22:15:11,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:15:11,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686494394] [2025-01-08 22:15:11,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686494394] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:15:11,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329116444] [2025-01-08 22:15:11,528 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:15:11,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:15:11,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:15:11,532 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:15:11,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-08 22:15:11,714 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 307 statements into 2 equivalence classes. [2025-01-08 22:15:11,814 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 307 of 307 statements. [2025-01-08 22:15:11,814 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:15:11,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:15:11,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 1227 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-08 22:15:11,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:15:11,955 INFO L134 CoverageAnalysis]: Checked inductivity of 8358 backedges. 2689 proven. 610 refuted. 0 times theorem prover too weak. 5059 trivial. 0 not checked. [2025-01-08 22:15:11,955 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:15:12,321 INFO L134 CoverageAnalysis]: Checked inductivity of 8358 backedges. 41 proven. 3348 refuted. 0 times theorem prover too weak. 4969 trivial. 0 not checked. [2025-01-08 22:15:12,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329116444] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:15:12,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:15:12,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 23, 23] total 33 [2025-01-08 22:15:12,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42422740] [2025-01-08 22:15:12,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:15:12,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-01-08 22:15:12,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:15:12,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-01-08 22:15:12,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2025-01-08 22:15:12,323 INFO L87 Difference]: Start difference. First operand 172 states and 184 transitions. Second operand has 33 states, 33 states have (on average 3.9393939393939394) internal successors, (130), 33 states have internal predecessors, (130), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-08 22:15:12,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:15:12,447 INFO L93 Difference]: Finished difference Result 330 states and 372 transitions. [2025-01-08 22:15:12,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-01-08 22:15:12,447 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.9393939393939394) internal successors, (130), 33 states have internal predecessors, (130), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 307 [2025-01-08 22:15:12,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:15:12,449 INFO L225 Difference]: With dead ends: 330 [2025-01-08 22:15:12,449 INFO L226 Difference]: Without dead ends: 223 [2025-01-08 22:15:12,450 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 587 SyntacticMatches, 11 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2025-01-08 22:15:12,450 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 13 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:15:12,450 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 108 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:15:12,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2025-01-08 22:15:12,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2025-01-08 22:15:12,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 218 states have (on average 1.0504587155963303) internal successors, (229), 218 states have internal predecessors, (229), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:15:12,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 235 transitions. [2025-01-08 22:15:12,460 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 235 transitions. Word has length 307 [2025-01-08 22:15:12,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:15:12,460 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 235 transitions. [2025-01-08 22:15:12,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.9393939393939394) internal successors, (130), 33 states have internal predecessors, (130), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-08 22:15:12,460 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 235 transitions. [2025-01-08 22:15:12,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2025-01-08 22:15:12,467 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:15:12,467 INFO L218 NwaCegarLoop]: trace histogram [114, 114, 93, 60, 30, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:15:12,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-01-08 22:15:12,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-08 22:15:12,671 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:15:12,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:15:12,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1158997322, now seen corresponding path program 11 times [2025-01-08 22:15:12,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:15:12,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862199838] [2025-01-08 22:15:12,672 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:15:12,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:15:12,703 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 460 statements into 78 equivalence classes. [2025-01-08 22:15:12,712 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) and asserted 64 of 460 statements. [2025-01-08 22:15:12,712 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2025-01-08 22:15:12,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:15:12,806 INFO L134 CoverageAnalysis]: Checked inductivity of 21975 backedges. 705 proven. 1847 refuted. 0 times theorem prover too weak. 19423 trivial. 0 not checked. [2025-01-08 22:15:12,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:15:12,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862199838] [2025-01-08 22:15:12,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862199838] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:15:12,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107999919] [2025-01-08 22:15:12,807 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:15:12,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:15:12,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:15:12,809 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:15:12,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-08 22:15:13,008 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 460 statements into 78 equivalence classes. [2025-01-08 22:15:13,026 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) and asserted 64 of 460 statements. [2025-01-08 22:15:13,026 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2025-01-08 22:15:13,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:15:13,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-08 22:15:13,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:15:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 21975 backedges. 9795 proven. 222 refuted. 0 times theorem prover too weak. 11958 trivial. 0 not checked. [2025-01-08 22:15:13,116 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:15:13,366 INFO L134 CoverageAnalysis]: Checked inductivity of 21975 backedges. 975 proven. 3142 refuted. 0 times theorem prover too weak. 17858 trivial. 0 not checked. [2025-01-08 22:15:13,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107999919] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:15:13,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:15:13,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16, 16] total 30 [2025-01-08 22:15:13,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906178120] [2025-01-08 22:15:13,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:15:13,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-01-08 22:15:13,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:15:13,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-01-08 22:15:13,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2025-01-08 22:15:13,368 INFO L87 Difference]: Start difference. First operand 223 states and 235 transitions. Second operand has 30 states, 30 states have (on average 3.7333333333333334) internal successors, (112), 30 states have internal predecessors, (112), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-08 22:15:13,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:15:13,453 INFO L93 Difference]: Finished difference Result 441 states and 506 transitions. [2025-01-08 22:15:13,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-01-08 22:15:13,454 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.7333333333333334) internal successors, (112), 30 states have internal predecessors, (112), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 460 [2025-01-08 22:15:13,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:15:13,455 INFO L225 Difference]: With dead ends: 441 [2025-01-08 22:15:13,455 INFO L226 Difference]: Without dead ends: 283 [2025-01-08 22:15:13,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 929 GetRequests, 901 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2025-01-08 22:15:13,456 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 19 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:15:13,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 107 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:15:13,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2025-01-08 22:15:13,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2025-01-08 22:15:13,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 278 states have (on average 1.1115107913669064) internal successors, (309), 278 states have internal predecessors, (309), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:15:13,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 315 transitions. [2025-01-08 22:15:13,463 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 315 transitions. Word has length 460 [2025-01-08 22:15:13,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:15:13,463 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 315 transitions. [2025-01-08 22:15:13,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.7333333333333334) internal successors, (112), 30 states have internal predecessors, (112), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-08 22:15:13,464 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 315 transitions. [2025-01-08 22:15:13,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2025-01-08 22:15:13,466 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:15:13,466 INFO L218 NwaCegarLoop]: trace histogram [174, 174, 93, 81, 60, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:15:13,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-01-08 22:15:13,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-08 22:15:13,667 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:15:13,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:15:13,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1193011338, now seen corresponding path program 12 times [2025-01-08 22:15:13,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:15:13,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323781388] [2025-01-08 22:15:13,668 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:15:13,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:15:13,704 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 640 statements into 118 equivalence classes. [2025-01-08 22:15:14,294 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) and asserted 224 of 640 statements. [2025-01-08 22:15:14,294 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) [2025-01-08 22:15:14,295 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:15:15,075 INFO L134 CoverageAnalysis]: Checked inductivity of 47985 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 47520 trivial. 0 not checked. [2025-01-08 22:15:15,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:15:15,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323781388] [2025-01-08 22:15:15,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323781388] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:15:15,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844236823] [2025-01-08 22:15:15,076 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:15:15,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:15:15,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:15:15,078 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:15:15,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-08 22:15:15,308 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 640 statements into 118 equivalence classes. [2025-01-08 22:16:17,613 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) and asserted 224 of 640 statements. [2025-01-08 22:16:17,613 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) [2025-01-08 22:16:17,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:17,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-01-08 22:16:17,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:17,756 INFO L134 CoverageAnalysis]: Checked inductivity of 47985 backedges. 20426 proven. 465 refuted. 0 times theorem prover too weak. 27094 trivial. 0 not checked. [2025-01-08 22:16:17,756 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:18,654 INFO L134 CoverageAnalysis]: Checked inductivity of 47985 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 47520 trivial. 0 not checked. [2025-01-08 22:16:18,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844236823] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:18,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:18,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 63 [2025-01-08 22:16:18,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941844883] [2025-01-08 22:16:18,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:18,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2025-01-08 22:16:18,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:18,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2025-01-08 22:16:18,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1952, Invalid=1954, Unknown=0, NotChecked=0, Total=3906 [2025-01-08 22:16:18,657 INFO L87 Difference]: Start difference. First operand 283 states and 315 transitions. Second operand has 63 states, 63 states have (on average 1.4444444444444444) internal successors, (91), 63 states have internal predecessors, (91), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-08 22:16:18,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:18,710 INFO L93 Difference]: Finished difference Result 496 states and 585 transitions. [2025-01-08 22:16:18,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-01-08 22:16:18,711 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.4444444444444444) internal successors, (91), 63 states have internal predecessors, (91), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 640 [2025-01-08 22:16:18,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:18,712 INFO L225 Difference]: With dead ends: 496 [2025-01-08 22:16:18,712 INFO L226 Difference]: Without dead ends: 312 [2025-01-08 22:16:18,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1311 GetRequests, 1246 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1952, Invalid=1954, Unknown=0, NotChecked=0, Total=3906 [2025-01-08 22:16:18,714 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:18,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 118 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:16:18,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2025-01-08 22:16:18,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2025-01-08 22:16:18,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 307 states have (on average 1.1009771986970684) internal successors, (338), 307 states have internal predecessors, (338), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:16:18,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 344 transitions. [2025-01-08 22:16:18,722 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 344 transitions. Word has length 640 [2025-01-08 22:16:18,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:18,722 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 344 transitions. [2025-01-08 22:16:18,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.4444444444444444) internal successors, (91), 63 states have internal predecessors, (91), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-08 22:16:18,722 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 344 transitions. [2025-01-08 22:16:18,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2025-01-08 22:16:18,725 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:18,725 INFO L218 NwaCegarLoop]: trace histogram [174, 174, 93, 81, 60, 59, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:18,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-01-08 22:16:18,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:18,926 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:18,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:18,927 INFO L85 PathProgramCache]: Analyzing trace with hash 2006122074, now seen corresponding path program 13 times [2025-01-08 22:16:18,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:18,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733572860] [2025-01-08 22:16:18,927 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:16:18,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:18,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 669 statements into 1 equivalence classes. [2025-01-08 22:16:19,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 669 of 669 statements. [2025-01-08 22:16:19,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:19,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:22,389 INFO L134 CoverageAnalysis]: Checked inductivity of 49290 backedges. 0 proven. 25441 refuted. 0 times theorem prover too weak. 23849 trivial. 0 not checked. [2025-01-08 22:16:22,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:16:22,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733572860] [2025-01-08 22:16:22,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733572860] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:16:22,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932029002] [2025-01-08 22:16:22,390 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:16:22,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:22,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:22,393 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:16:22,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-08 22:16:22,697 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 669 statements into 1 equivalence classes. [2025-01-08 22:16:22,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 669 of 669 statements. [2025-01-08 22:16:22,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:16:22,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:16:22,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 2114 conjuncts, 60 conjuncts are in the unsatisfiable core [2025-01-08 22:16:22,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:16:23,116 INFO L134 CoverageAnalysis]: Checked inductivity of 49290 backedges. 20420 proven. 5017 refuted. 0 times theorem prover too weak. 23853 trivial. 0 not checked. [2025-01-08 22:16:23,117 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:16:24,421 INFO L134 CoverageAnalysis]: Checked inductivity of 49290 backedges. 0 proven. 25441 refuted. 0 times theorem prover too weak. 23849 trivial. 0 not checked. [2025-01-08 22:16:24,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932029002] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:16:24,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:16:24,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 63 [2025-01-08 22:16:24,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066207746] [2025-01-08 22:16:24,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:16:24,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2025-01-08 22:16:24,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:16:24,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2025-01-08 22:16:24,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2025-01-08 22:16:24,425 INFO L87 Difference]: Start difference. First operand 312 states and 344 transitions. Second operand has 63 states, 63 states have (on average 3.3968253968253967) internal successors, (214), 63 states have internal predecessors, (214), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-08 22:16:24,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:16:24,694 INFO L93 Difference]: Finished difference Result 565 states and 634 transitions. [2025-01-08 22:16:24,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2025-01-08 22:16:24,696 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 3.3968253968253967) internal successors, (214), 63 states have internal predecessors, (214), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 669 [2025-01-08 22:16:24,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:16:24,699 INFO L225 Difference]: With dead ends: 565 [2025-01-08 22:16:24,699 INFO L226 Difference]: Without dead ends: 318 [2025-01-08 22:16:24,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1397 GetRequests, 1278 SyntacticMatches, 58 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1942 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2025-01-08 22:16:24,702 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:16:24,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 170 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:16:24,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2025-01-08 22:16:24,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2025-01-08 22:16:24,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 313 states have (on average 1.1054313099041533) internal successors, (346), 313 states have internal predecessors, (346), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:16:24,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 352 transitions. [2025-01-08 22:16:24,722 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 352 transitions. Word has length 669 [2025-01-08 22:16:24,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:16:24,722 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 352 transitions. [2025-01-08 22:16:24,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 3.3968253968253967) internal successors, (214), 63 states have internal predecessors, (214), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-08 22:16:24,723 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 352 transitions. [2025-01-08 22:16:24,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2025-01-08 22:16:24,725 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:16:24,726 INFO L218 NwaCegarLoop]: trace histogram [180, 180, 93, 87, 60, 59, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:16:24,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-01-08 22:16:24,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:24,927 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:16:24,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:16:24,927 INFO L85 PathProgramCache]: Analyzing trace with hash -2101204934, now seen corresponding path program 14 times [2025-01-08 22:16:24,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:16:24,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321989134] [2025-01-08 22:16:24,928 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:16:24,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:16:24,989 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 687 statements into 2 equivalence classes. [2025-01-08 22:16:30,496 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 687 of 687 statements. [2025-01-08 22:16:30,497 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:16:30,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-08 22:16:30,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1912592172] [2025-01-08 22:16:30,540 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:16:30,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:16:30,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:16:30,542 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:16:30,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-08 22:16:30,863 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 687 statements into 2 equivalence classes.